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Historians of science | Wikipedia audio article

Historians of science | Wikipedia audio article

The history of science is the study of the
development of science and scientific knowledge, including both the natural and social sciences
(the history of the arts and humanities is termed history of scholarship). Science is
a body of empirical, theoretical, and practical knowledge about the natural world, produced
by scientists who emphasize the observation, explanation, and prediction of real-world
phenomena. Historiography of science, in contrast, studies the methods employed by historians
of science. The English word scientist is relatively recent—first
coined by William Whewell in the 19th century. Previously, investigators of nature called
themselves “natural philosophers”. While empirical investigations of the natural world have been
described since classical antiquity (for example, by Thales and Aristotle), and the scientific
method has been employed since the Middle Ages (for example, by Ibn al-Haytham and Roger
Bacon), modern science began to develop in the early modern period, and in particular
in the scientific revolution of 16th- and 17th-century Europe. Traditionally, historians
of science have defined science sufficiently broadly to include those earlier inquiries.From
the 18th through the late 20th century, the history of science, especially of the physical
and biological sciences, was often presented as a progressive accumulation of knowledge,
in which true theories replaced false beliefs. More recent historical interpretations, such
as those of Thomas Kuhn, tend to portray the history of science in terms of competing paradigms
or conceptual systems within a wider matrix of intellectual, cultural, economic and political
trends. These interpretations, however, have met with opposition for they also portray
the history of science as an incoherent system of incommensurable paradigms, not leading
to any actual scientific progress but only to the illusion that it has occurred.==Early cultures==In prehistoric times, knowledge and technique
were passed from generation to generation in an oral tradition. For example, the domestication
of maize for agriculture has been dated to about 9,000 years ago in southern Mexico,
before the development of writing systems. Similarly, archaeological evidence indicates
the development of astronomical knowledge in preliterate societies. The development
of writing enabled knowledge to be stored and communicated across generations with much
greater fidelity. Many ancient civilizations systematically
collected astronomical observations. Rather than speculate on the material nature of the
planets and stars, the ancients charted the relative positions of celestial bodies, often
inferring their influence on human society. This demonstrates how ancient investigators
generally employed a holistic intuition, assuming the interconnectedness of all things, whereas
modern science rejects such conceptual leaps. Basic facts about human physiology were known
in some places, and alchemy was practiced in several civilizations. Considerable observation
of macroscopic flora and fauna was also performed.===Ancient Near East===The ancient Mesopotamians had no distinction
between “rational science” and magic. When a person became ill, doctors prescribed magical
formulas to be recited as well as medicinal treatments. The earliest medical prescriptions
appear in Sumerian during the Third Dynasty of Ur (c. 2112 BC – c. 2004 BC). The most
extensive Babylonian medical text, however, is the Diagnostic Handbook written by the
ummânū, or chief scholar, Esagil-kin-apli of Borsippa, during the reign of the Babylonian
king Adad-apla-iddina (1069–1046 BC). In East Semitic cultures, the main medicinal
authority was a kind of exorcist-healer known as an āšipu. The profession was generally
passed down from father to son and was held in extremely high regard. Of less frequent
recourse was another kind of healer known as an asu, who corresponds more closely to
a modern physician and treated physical symptoms using primarily folk remedies composed of
various herbs, animal products, and minerals, as well as potions, enemas, and ointments
or poultices. These physicians, who could be either male or female, also dressed wounds,
set limbs, and performed simple surgeries. The ancient Mesopotamians also practiced prophylaxis
and took measures to prevent the spread of disease.The ancient Mesopotamians had extensive
knowledge about the chemical properties of clay, sand, metal ore, bitumen, stone, and
other natural materials, and applied this knowledge to practical use in manufacturing
pottery, faience, glass, soap, metals, lime plaster, and waterproofing. Metallurgy required
scientific knowledge about the properties of metals. Nonetheless, the Mesopotamians
seem to have had little interest in gathering information about the natural world for the
mere sake of gathering information and were far more interested in studying the manner
in which the gods had ordered the universe. Biology of non-human organisms was generally
only written about in the context of mainstream academic disciplines. Animal physiology was
studied extensively for the purpose of divination; the anatomy of the liver, which was seen as
an important organ in haruspicy, was studied in particularly intensive detail. Animal behavior
was also studied for divinatory purposes. Most information about the training and domestication
of animals was probably transmitted orally without being written down, but one text dealing
with the training of horses has survived. The Mesopotamian cuneiform tablet Plimpton
322, dating to the eighteenth century BC, records a number of Pythagorean triplets (3,4,5)
(5,12,13) …, hinting that the ancient Mesopotamians might have been aware of the Pythagorean theorem
over a millennium before Pythagoras. In Babylonian astronomy, records of the motions
of the stars, planets, and the moon are left on thousands of clay tablets created by scribes.
Even today, astronomical periods identified by Mesopotamian proto-scientists are still
widely used in Western calendars such as the solar year and the lunar month. Using these
data they developed arithmetical methods to compute the changing length of daylight in
the course of the year and to predict the appearances and disappearances of the Moon
and planets and eclipses of the Sun and Moon. Only a few astronomers’ names are known, such
as that of Kidinnu, a Chaldean astronomer and mathematician. Kiddinu’s value for the
solar year is in use for today’s calendars. Babylonian astronomy was “the first and highly
successful attempt at giving a refined mathematical description of astronomical phenomena.” According
to the historian A. Aaboe, “all subsequent varieties of scientific astronomy, in the
Hellenistic world, in India, in Islam, and in the West—if not indeed all subsequent
endeavour in the exact sciences—depend upon Babylonian astronomy in decisive and fundamental
ways.”===Egypt===Ancient Egypt made significant advances in
astronomy, mathematics and medicine. Their development of geometry was a necessary outgrowth
of surveying to preserve the layout and ownership of farmland, which was flooded annually by
the Nile river. The 3-4-5 right triangle and other rules of geometry were used to build
rectilinear structures, and the post and lintel architecture of Egypt. Egypt was also a center
of alchemy research for much of the Mediterranean. The Edwin Smith papyrus is one of the first
medical documents still extant, and perhaps the earliest document that attempts to describe
and analyse the brain: it might be seen as the very beginnings of modern neuroscience.
However, while Egyptian medicine had some effective practices, it was often ineffective
and sometimes harmful. Medical historians believe that ancient Egyptian pharmacology,
for example, was largely ineffective. Nevertheless, it applied the following components to the
treatment of disease: examination, diagnosis, treatment, and prognosis, which display strong
parallels to the basic empirical method of science and, according to G.E.R. Lloyd, played
a significant role in the development of this methodology. The Ebers papyrus (c. 1550 BC)
also contains evidence of traditional empiricism.===Greco-Roman world===In Classical Antiquity, the inquiry into the
workings of the universe took place both in investigations aimed at such practical goals
as establishing a reliable calendar or determining how to cure a variety of illnesses and in
those abstract investigations known as natural philosophy. The ancient people who are considered
the first scientists may have thought of themselves as natural philosophers, as practitioners
of a skilled profession (for example, physicians), or as followers of a religious tradition (for
example, temple healers). The earliest Greek philosophers, known as
the pre-Socratics, provided competing answers to the question found in the myths of their
neighbors: “How did the ordered cosmos in which we live come to be?” The pre-Socratic
philosopher Thales (640–546 BC), dubbed the “father of science”, was the first to
postulate non-supernatural explanations for natural phenomena. For example, that land
floats on water and that earthquakes are caused by the agitation of the water upon which the
land floats, rather than the god Poseidon. Thales’ student Pythagoras of Samos founded
the Pythagorean school, which investigated mathematics for its own sake, and was the
first to postulate that the Earth is spherical in shape. Leucippus (5th century BC) introduced
atomism, the theory that all matter is made of indivisible, imperishable units called
atoms. This was greatly expanded on by his pupil Democritus and later Epicurus.
Subsequently, Plato and Aristotle produced the first systematic discussions of natural
philosophy, which did much to shape later investigations of nature. Their development
of deductive reasoning was of particular importance and usefulness to later scientific inquiry.
Plato founded the Platonic Academy in 387 BC, whose motto was “Let none unversed in
geometry enter here”, and turned out many notable philosophers. Plato’s student Aristotle
introduced empiricism and the notion that universal truths can be arrived at via observation
and induction, thereby laying the foundations of the scientific method. Aristotle also produced
many biological writings that were empirical in nature, focusing on biological causation
and the diversity of life. He made countless observations of nature, especially the habits
and attributes of plants and animals on Lesbos, classified more than 540 animal species, and
dissected at least 50. Aristotle’s writings profoundly influenced subsequent Islamic and
European scholarship, though they were eventually superseded in the Scientific Revolution. The important legacy of this period included
substantial advances in factual knowledge, especially in anatomy, zoology, botany, mineralogy,
geography, mathematics and astronomy; an awareness of the importance of certain scientific problems,
especially those related to the problem of change and its causes; and a recognition of
the methodological importance of applying mathematics to natural phenomena and of undertaking
empirical research. In the Hellenistic age scholars frequently employed the principles
developed in earlier Greek thought: the application of mathematics and deliberate empirical research,
in their scientific investigations. Thus, clear unbroken lines of influence lead from
ancient Greek and Hellenistic philosophers, to medieval Muslim philosophers and scientists,
to the European Renaissance and Enlightenment, to the secular sciences of the modern day.
Neither reason nor inquiry began with the Ancient Greeks, but the Socratic method did,
along with the idea of Forms, great advances in geometry, logic, and the natural sciences.
According to Benjamin Farrington, former Professor of Classics at Swansea University: “Men were weighing for thousands of years
before Archimedes worked out the laws of equilibrium; they must have had practical and intuitional
knowledge of the principles involved. What Archimedes did was to sort out the theoretical
implications of this practical knowledge and present the resulting body of knowledge as
a logically coherent system.”and again: “With astonishment we find ourselves on the
threshold of modern science. Nor should it be supposed that by some trick of translation
the extracts have been given an air of modernity. Far from it. The vocabulary of these writings
and their style are the source from which our own vocabulary and style have been derived.”
The astronomer Aristarchus of Samos was the first known person to propose a heliocentric
model of the solar system, while the geographer Eratosthenes accurately calculated the circumference
of the Earth. Hipparchus (c. 190 – c. 120 BC) produced the first systematic star catalog.
The level of achievement in Hellenistic astronomy and engineering is impressively shown by the
Antikythera mechanism (150–100 BC), an analog computer for calculating the position of planets.
Technological artifacts of similar complexity did not reappear until the 14th century, when
mechanical astronomical clocks appeared in Europe.In medicine, Hippocrates (c. 460 BC
– c. 370 BC) and his followers were the first to describe many diseases and medical
conditions and developed the Hippocratic Oath for physicians, still relevant and in use
today. Herophilos (335–280 BC) was the first to base his conclusions on dissection of the
human body and to describe the nervous system. Galen (129 – c. 200 AD) performed many audacious
operations—including brain and eye surgeries— that were not tried again for almost two millennia. In Hellenistic Egypt, the mathematician Euclid
laid down the foundations of mathematical rigor and introduced the concepts of definition,
axiom, theorem and proof still in use today in his Elements, considered the most influential
textbook ever written. Archimedes, considered one of the greatest mathematicians of all
time, is credited with using the method of exhaustion to calculate the area under the
arc of a parabola with the summation of an infinite series, and gave a remarkably accurate
approximation of Pi. He is also known in physics for laying the foundations of hydrostatics,
statics, and the explanation of the principle of the lever.
Theophrastus wrote some of the earliest descriptions of plants and animals, establishing the first
taxonomy and looking at minerals in terms of their properties such as hardness. Pliny
the Elder produced what is one of the largest encyclopedias of the natural world in 77 AD,
and must be regarded as the rightful successor to Theophrastus. For example, he accurately
describes the octahedral shape of the diamond, and proceeds to mention that diamond dust
is used by engravers to cut and polish other gems owing to its great hardness. His recognition
of the importance of crystal shape is a precursor to modern crystallography, while mention of
numerous other minerals presages mineralogy. He also recognises that other minerals have
characteristic crystal shapes, but in one example, confuses the crystal habit with the
work of lapidaries. He was also the first to recognise that amber was a fossilized resin
from pine trees because he had seen samples with trapped insects within them.===India===Mathematics: The earliest traces of mathematical
knowledge in the Indian subcontinent appear with the Indus Valley Civilization (c. 4th
millennium BC ~ c. 3rd millennium BC). The people of this civilization made bricks whose
dimensions were in the proportion 4:2:1, considered favorable for the stability of a brick structure.
They also tried to standardize measurement of length to a high degree of accuracy. They
designed a ruler—the Mohenjo-daro ruler—whose unit of length (approximately 1.32 inches
or 3.4 centimetres) was divided into ten equal parts. Bricks manufactured in ancient Mohenjo-daro
often had dimensions that were integral multiples of this unit of length.Indian astronomer and
mathematician Aryabhata (476–550), in his Aryabhatiya (499) introduced a number of trigonometric
functions (including sine, versine, cosine and inverse sine), trigonometric tables, and
techniques and algorithms of algebra. In 628 AD, Brahmagupta suggested that gravity was
a force of attraction. He also lucidly explained the use of zero as both a placeholder and
a decimal digit, along with the Hindu-Arabic numeral system now used universally throughout
the world. Arabic translations of the two astronomers’ texts were soon available in
the Islamic world, introducing what would become Arabic numerals to the Islamic world
by the 9th century. During the 14th–16th centuries, the Kerala school of astronomy
and mathematics made significant advances in astronomy and especially mathematics, including
fields such as trigonometry and analysis. In particular, Madhava of Sangamagrama is
considered the “founder of mathematical analysis”.Astronomy: The first textual mention of astronomical
concepts comes from the Vedas, religious literature of India. According to Sarma (2008): “One
finds in the Rigveda intelligent speculations about the genesis of the universe from nonexistence,
the configuration of the universe, the spherical self-supporting earth, and the year of 360
days divided into 12 equal parts of 30 days each with a periodical intercalary month.”.
The first 12 chapters of the Siddhanta Shiromani, written by Bhāskara in the 12th century,
cover topics such as: mean longitudes of the planets; true longitudes of the planets; the
three problems of diurnal rotation; syzygies; lunar eclipses; solar eclipses; latitudes
of the planets; risings and settings; the moon’s crescent; conjunctions of the planets
with each other; conjunctions of the planets with the fixed stars; and the patas of the
sun and moon. The 13 chapters of the second part cover the nature of the sphere, as well
as significant astronomical and trigonometric calculations based on it.
Nilakantha Somayaji’s astronomical treatise the Tantrasangraha similar in nature to the
Tychonic system proposed by Tycho Brahe had been the most accurate astronomical model
until the time of Johannes Kepler in the 17th century.Linguistics: Some of the earliest
linguistic activities can be found in Iron Age India (1st millennium BC) with the analysis
of Sanskrit for the purpose of the correct recitation and interpretation of Vedic texts.
The most notable grammarian of Sanskrit was Pāṇini (c. 520–460 BC), whose grammar
formulates close to 4,000 rules which together form a compact generative grammar of Sanskrit.
Inherent in his analytic approach are the concepts of the phoneme, the morpheme and
the root. Medicine: Findings from Neolithic graveyards
in what is now Pakistan show evidence of proto-dentistry among an early farming culture. Ayurveda is
a system of traditional medicine that originated in ancient India before 2500 BC, and is now
practiced as a form of alternative medicine in other parts of the world. Its most famous
text is the Suśrutasamhitā of Suśruta, which is notable for describing procedures
on various forms of surgery, including rhinoplasty, the repair of torn ear lobes, perineal lithotomy,
cataract surgery, and several other excisions and other surgical procedures.
Metallurgy: The wootz, crucible and stainless steels were invented in India, and were widely
exported in Classic Mediterranean world. It was known from Pliny the Elder as ferrum indicum.
Indian Wootz steel was held in high regard in Roman Empire, was often considered to be
the best. After in Middle Age it was imported in Syria to produce with special techniques
the “Damascus steel” by the year 1000. The Hindus excel in the manufacture of iron,
and in the preparations of those ingredients along with which it is fused to obtain that
kind of soft iron which is usually styled Indian steel (Hindiah). They also have workshops
wherein are forged the most famous sabres in the world. —Henry Yule quoted the 12th-century Arab
Edrizi.===China===Mathematics: From the earliest the Chinese
used a positional decimal system on counting boards in order to calculate. To express 10,
a single rod is placed in the second box from the right. The spoken language uses a similar
system to English: e.g. four thousand two hundred seven. No symbol was used for zero.
By the 1st century BC, negative numbers and decimal fractions were in use and The Nine
Chapters on the Mathematical Art included methods for extracting higher order roots
by Horner’s method and solving linear equations and by Pythagoras’ theorem. Cubic equations
were solved in the Tang dynasty and solutions of equations of order higher than 3 appeared
in print in 1245 AD by Ch’in Chiu-shao. Pascal’s triangle for binomial coefficients was described
around 1100 by Jia Xian. Although the first attempts at an axiomatisation
of geometry appear in the Mohist canon in 330 BC, Liu Hui developed algebraic methods
in geometry in the 3rd century AD and also calculated pi to 5 significant figures. In
480, Zu Chongzhi improved this by discovering the ratio 355
113 {\displaystyle {\tfrac {355}{113}}}
which remained the most accurate value for 1200 years. Astronomy: Astronomical observations from
China constitute the longest continuous sequence from any civilisation and include records
of sunspots (112 records from 364 BC), supernovas (1054), lunar and solar eclipses. By the 12th
century, they could reasonably accurately make predictions of eclipses, but the knowledge
of this was lost during the Ming dynasty, so that the Jesuit Matteo Ricci gained much
favour in 1601 by his predictions. By 635 Chinese astronomers had observed that
the tails of comets always point away from the sun.
From antiquity, the Chinese used an equatorial system for describing the skies and a star
map from 940 was drawn using a cylindrical (Mercator) projection. The use of an armillary
sphere is recorded from the 4th century BC and a sphere permanently mounted in equatorial
axis from 52 BC. In 125 AD Zhang Heng used water power to rotate the sphere in real time.
This included rings for the meridian and ecliptic. By 1270 they had incorporated the principles
of the Arab torquetum. Seismology: To better prepare for calamities,
Zhang Heng invented a seismometer in 132 CE which provided instant alert to authorities
in the capital Luoyang that an earthquake had occurred in a location indicated by a
specific cardinal or ordinal direction. Although no tremors could be felt in the capital when
Zhang told the court that an earthquake had just occurred in the northwest, a message
came soon afterwards that an earthquake had indeed struck 400 km (248 mi) to 500 km (310
mi) northwest of Luoyang (in what is now modern Gansu). Zhang called his device the ‘instrument
for measuring the seasonal winds and the movements of the Earth’ (Houfeng didong yi 候风地动仪),
so-named because he and others thought that earthquakes were most likely caused by the
enormous compression of trapped air. See Zhang’s seismometer for further details.
There are many notable contributors to the field of Chinese science throughout the ages.
One of the best examples would be Shen Kuo (1031–1095), a polymath scientist and statesman
who was the first to describe the magnetic-needle compass used for navigation, discovered the
concept of true north, improved the design of the astronomical gnomon, armillary sphere,
sight tube, and clepsydra, and described the use of drydocks to repair boats. After observing
the natural process of the inundation of silt and the find of marine fossils in the Taihang
Mountains (hundreds of miles from the Pacific Ocean), Shen Kuo devised a theory of land
formation, or geomorphology. He also adopted a theory of gradual climate change in regions
over time, after observing petrified bamboo found underground at Yan’an, Shaanxi province.
If not for Shen Kuo’s writing, the architectural works of Yu Hao would be little known, along
with the inventor of movable type printing, Bi Sheng (990–1051). Shen’s contemporary
Su Song (1020–1101) was also a brilliant polymath, an astronomer who created a celestial
atlas of star maps, wrote a pharmaceutical treatise with related subjects of botany,
zoology, mineralogy, and metallurgy, and had erected a large astronomical clocktower in
Kaifeng city in 1088. To operate the crowning armillary sphere, his clocktower featured
an escapement mechanism and the world’s oldest known use of an endless power-transmitting
chain drive. The Jesuit China missions of the 16th and
17th centuries “learned to appreciate the scientific achievements of this ancient culture
and made them known in Europe. Through their correspondence European scientists first learned
about the Chinese science and culture.” Western academic thought on the history of Chinese
technology and science was galvanized by the work of Joseph Needham and the Needham Research
Institute. Among the technological accomplishments of China were, according to the British scholar
Needham, early seismological detectors (Zhang Heng in the 2nd century), the water-powered
celestial globe (Zhang Heng), matches, the independent invention of the decimal system,
dry docks, sliding calipers, the double-action piston pump, cast iron, the blast furnace,
the iron plough, the multi-tube seed drill, the wheelbarrow, the suspension bridge, the
winnowing machine, the rotary fan, the parachute, natural gas as fuel, the raised-relief map,
the propeller, the crossbow, and a solid fuel rocket, the multistage rocket, the horse collar,
along with contributions in logic, astronomy, medicine, and other fields.
However, cultural factors prevented these Chinese achievements from developing into
what we might call “modern science”. According to Needham, it may have been the religious
and philosophical framework of Chinese intellectuals which made them unable to accept the ideas
of laws of nature: It was not that there was no order in nature
for the Chinese, but rather that it was not an order ordained by a rational personal being,
and hence there was no conviction that rational personal beings would be able to spell out
in their lesser earthly languages the divine code of laws which he had decreed aforetime.
The Taoists, indeed, would have scorned such an idea as being too naïve for the subtlety
and complexity of the universe as they intuited it.==In the Middle Ages==
In the Middle Ages the classical learning continued in three major linguistic cultures
and civilizations: Greek (the Byzantine Empire), Arabic (the Islamic world), and Latin (Western
Europe).===Byzantine Empire===Because of the collapse of the Western Roman
Empire, the intellectual level in the western part of Europe declined in the 400s. In contrast,
the Eastern Roman or Byzantine Empire resisted the barbarian attacks, and preserved and improved
the learning.While the Byzantine Empire still held learning centers such as Constantinople,
Alexandria and Antioch, Western Europe’s knowledge was concentrated in monasteries until the
development of medieval universities in the 12th centuries. The curriculum of monastic
schools included the study of the few available ancient texts and of new works on practical
subjects like medicine and timekeeping.In the sixth century in the Byzantine Empire,
Isidore of Miletus compiled Archimedes’ mathematical works in the Archimedes Palimpsest, where
all Archimedes’ mathematical contributions were collected and studied.
John Philoponus, another Byzantine scholar, was the first to question Aristotle’s teaching
of physics, introducing the theory of impetus. The theory of impetus was an auxiliary or
secondary theory of Aristotelian dynamics, put forth initially to explain projectile
motion against gravity. It is the intellectual precursor to the concepts of inertia, momentum
and acceleration in classical mechanics. The works of John Philoponus inspired Galileo
Galilei ten centuries later.The first record of separating conjoined twins took place in
the Byzantine Empire in the 900s when the surgeons tried to separate a dead body of
a pair of conjoined twins. The result was partly successful as the other twin managed
to live for three days. The next recorded case of separating conjoined twins was several
centuries later, in 1600s Germany.During the Fall of Constantinople in 1453, a number of
Greek scholars flee to North Italy in which they fueled the era later commonly known as
“Renaissance” as they brought with them a great deal of classical learning including
an understanding of botany, medicine, and zoology. Byzantium also gave the West important
inputs: John Philoponus’ criticism of Aristotelian physics, and the works of Dioscorides.===Islamic world===In the Middle East, Greek philosophy was able
to find some support under the newly created Arab Empire. With the spread of Islam in the
7th and 8th centuries, a period of Muslim scholarship, known as the Islamic Golden Age,
lasted until the 13th century. This scholarship was aided by several factors. The use of a
single language, Arabic, allowed communication without need of a translator. Access to Greek
texts from the Byzantine Empire, along with Indian sources of learning, provided Muslim
scholars a knowledge base to build upon. Scientific method began developing in the
Muslim world, where significant progress in methodology was made, beginning with the experiments
of Ibn al-Haytham (Alhazen) on optics from c. 1000, in his Book of Optics. The most important
development of the scientific method was the use of experiments to distinguish between
competing scientific theories set within a generally empirical orientation, which began
among Muslim scientists. Ibn al-Haytham is also regarded as the father of optics, especially
for his empirical proof of the intromission theory of light. Some have also described
Ibn al-Haytham as the “first scientist” for his development of the modern scientific method.In
mathematics, the mathematician Muhammad ibn Musa al-Khwarizmi (c. 780–850) gave his
name to the concept of the algorithm, while the term algebra is derived from al-jabr,
the beginning of the title of one of his publications. What is now known as Arabic numerals originally
came from India, but Muslim mathematicians made several key refinements to the number
system, such as the introduction of decimal point notation.
In astronomy, Al-Battani (c. 858–929) improved the measurements of Hipparchus, preserved
in the translation of Ptolemy’s Hè Megalè Syntaxis (The great treatise) translated as
Almagest. Al-Battani also improved the precision of the measurement of the precession of the
Earth’s axis. The corrections made to the geocentric model by al-Battani, Ibn al-Haytham,
Averroes and the Maragha astronomers such as Nasir al-Din al-Tusi, Mo’ayyeduddin Urdi
and Ibn al-Shatir are similar to Copernican heliocentric model. Heliocentric theories
may have also been discussed by several other Muslim astronomers such as Ja’far ibn Muhammad
Abu Ma’shar al-Balkhi, Abu-Rayhan Biruni, Abu Said al-Sijzi, Qutb al-Din al-Shirazi,
and Najm al-Dīn al-Qazwīnī al-Kātibī.Muslim chemists and alchemists played an important
role in the foundation of modern chemistry. Scholars such as Will Durant and Fielding
H. Garrison considered Muslim chemists to be the founders of chemistry. In particular,
Jābir ibn Hayyān (c. 721–815) is “considered by many to be the father of chemistry”. The
works of Arabic scientists influenced Roger Bacon (who introduced the empirical method
to Europe, strongly influenced by his reading of Persian writers), and later Isaac Newton.
The scholar Al-Razi contributed to chemistry and medicine.Ibn Sina (Avicenna, c. 980–1037)
is regarded as the most influential philosopher of Islam. He pioneered the science of experimental
medicine and was the first physician to conduct clinical trials. His two most notable works
in medicine are the Kitāb al-shifāʾ (“Book of Healing”) and The Canon of Medicine, both
of which were used as standard medicinal texts in both the Muslim world and in Europe well
into the 17th century. Amongst his many contributions are the discovery of the contagious nature
of infectious diseases, and the introduction of clinical pharmacology.Scientists from the
Islamic world include al-Farabi (polymath), Abu al-Qasim al-Zahrawi (pioneer of surgery),
Abū Rayhān al-Bīrūnī (pioneer of Indology, geodesy and anthropology), Nasīr al-Dīn
al-Tūsī (polymath), and Ibn Khaldun (forerunner of social sciences such as demography, cultural
history, historiography, philosophy of history and sociology), among many others.
Islamic science began its decline in the 12th or 13th century, before the Renaissance in
Europe, and due in part to the 11th–13th century Mongol conquests, during which libraries,
observatories, hospitals and universities were destroyed. The end of the Islamic Golden
Age is marked by the destruction of the intellectual center of Baghdad, the capital of the Abbasid
caliphate in 1258.===Western Europe===By the eleventh century, most of Europe had
become Christian; stronger monarchies emerged; borders were restored; technological developments
and agricultural innovations were made, increasing the food supply and population. Classical
Greek texts were translated from Arabic and Greek into Latin, stimulating scientific discussion
in Western Europe.An intellectual revitalization of Western Europe started with the birth of
medieval universities in the 12th century. Contact with the Byzantine Empire, and with
the Islamic world during the Reconquista and the Crusades, allowed Latin Europe access
to scientific Greek and Arabic texts, including the works of Aristotle, Ptolemy, Isidore of
Miletus, John Philoponus, Jābir ibn Hayyān, al-Khwarizmi, Alhazen, Avicenna, and Averroes.
European scholars had access to the translation programs of Raymond of Toledo, who sponsored
the 12th century Toledo School of Translators from Arabic to Latin. Later translators like
Michael Scotus would learn Arabic in order to study these texts directly. The European
universities aided materially in the translation and propagation of these texts and started
a new infrastructure which was needed for scientific communities. In fact, European
university put many works about the natural world and the study of nature at the center
of its curriculum, with the result that the “medieval university laid far greater emphasis
on science than does its modern counterpart and descendent.”In classical antiquity, Greek
and Roman taboos had meant that dissection was usually banned, but in the Middle Ages
medical teachers and students at Bologna began to open human bodies, and Mondino de Luzzi
(c. 1275–1326) produced the first known anatomy textbook based on human dissection.As
a result of the Pax Mongolica, Europeans, such as Marco Polo, began to venture further
and further east. This led to the increased awareness of Indian and even Chinese culture
and civilization within the European tradition. Technological advances were also made, such
as the early flight of Eilmer of Malmesbury (who had studied Mathematics in 11th century
England), and the metallurgical achievements of the Cistercian blast furnace at Laskill. At the beginning of the 13th century, there
were reasonably accurate Latin translations of the main works of almost all the intellectually
crucial ancient authors, allowing a sound transfer of scientific ideas via both the
universities and the monasteries. By then, the natural philosophy in these texts began
to be extended by scholastics such as Robert Grosseteste, Roger Bacon, Albertus Magnus
and Duns Scotus. Precursors of the modern scientific method, influenced by earlier contributions
of the Islamic world, can be seen already in Grosseteste’s emphasis on mathematics as
a way to understand nature, and in the empirical approach admired by Bacon, particularly in
his Opus Majus. Pierre Duhem’s thesis is that Stephen Tempier – the Bishop of Paris – Condemnation
of 1277 led to the study of medieval science as a serious discipline, “but no one in the
field any longer endorses his view that modern science started in 1277”. However, many scholars
agree with Duhem’s view that the Middle Ages saw important scientific developments.The
first half of the 14th century saw much important scientific work, largely within the framework
of scholastic commentaries on Aristotle’s scientific writings. William of Ockham emphasised
the principle of parsimony: natural philosophers should not postulate unnecessary entities,
so that motion is not a distinct thing but is only the moving object and an intermediary
“sensible species” is not needed to transmit an image of an object to the eye. Scholars
such as Jean Buridan and Nicole Oresme started to reinterpret elements of Aristotle’s mechanics.
In particular, Buridan developed the theory that impetus was the cause of the motion of
projectiles, which was a first step towards the modern concept of inertia. The Oxford
Calculators began to mathematically analyze the kinematics of motion, making this analysis
without considering the causes of motion.In 1348, the Black Death and other disasters
sealed a sudden end to philosophic and scientific development. Yet, the rediscovery of ancient
texts was stimulated by the Fall of Constantinople in 1453, when many Byzantine scholars sought
refuge in the West. Meanwhile, the introduction of printing was to have great effect on European
society. The facilitated dissemination of the printed word democratized learning and
allowed ideas such as algebra to propagate more rapidly. These developments paved the
way for the Scientific Revolution, where scientific inquiry, halted at the start of the Black
Death, resumed.==Impact of science in Europe==The renewal of learning in Europe began with
12th century Scholasticism. The Northern Renaissance showed a decisive shift in focus from Aristoteleian
natural philosophy to chemistry and the biological sciences (botany, anatomy, and medicine).
Thus modern science in Europe was resumed in a period of great upheaval: the Protestant
Reformation and Catholic Counter-Reformation; the discovery of the Americas by Christopher
Columbus; the Fall of Constantinople; but also the re-discovery of Aristotle during
the Scholastic period presaged large social and political changes. Thus, a suitable environment
was created in which it became possible to question scientific doctrine, in much the
same way that Martin Luther and John Calvin questioned religious doctrine. The works of
Ptolemy (astronomy) and Galen (medicine) were found not always to match everyday observations.
Work by Vesalius on human cadavers found problems with the Galenic view of anatomy. The willingness to question previously held
truths and search for new answers resulted in a period of major scientific advancements,
now known as the Scientific Revolution. The Scientific Revolution is traditionally held
by most historians to have begun in 1543, when the books De humani corporis fabrica
(On the Workings of the Human Body) by Andreas Vesalius, and also De Revolutionibus, by the
astronomer Nicolaus Copernicus, were first printed. The thesis of Copernicus’ book was
that the Earth moved around the Sun. The period culminated with the publication of the Philosophiæ
Naturalis Principia Mathematica in 1687 by Isaac Newton, representative of the unprecedented
growth of scientific publications throughout Europe.
Other significant scientific advances were made during this time by Galileo Galilei,
Edmond Halley, Robert Hooke, Christiaan Huygens, Tycho Brahe, Johannes Kepler, Gottfried Leibniz,
and Blaise Pascal. In philosophy, major contributions were made by Francis Bacon, Sir Thomas Browne,
René Descartes, and Thomas Hobbes. The scientific method was also better developed as the modern
way of thinking emphasized experimentation and reason over traditional considerations.===Age of Enlightenment===The Age of Enlightenment was a European affair.
The 17th century brought decisive steps towards modern science, which accelerated during the
18th century. Directly based on the works of Newton, Descartes, Pascal and Leibniz,
the way was now clear to the development of modern mathematics, physics and technology
by the generation of Benjamin Franklin (1706–1790), Leonhard Euler (1707–1783), Mikhail Lomonosov
(1711–1765) and Jean le Rond d’Alembert (1717–1783). Denis Diderot’s Encyclopédie,
published between 1751 and 1772 brought this new understanding to a wider audience. The
impact of this process was not limited to science and technology, but affected philosophy
(Immanuel Kant, David Hume), religion (the increasingly significant impact of science
upon religion), and society and politics in general (Adam Smith, Voltaire). The early
modern period is seen as a flowering of the European Renaissance, in what is often known
as the Scientific Revolution, viewed as a foundation of modern science.===Romanticism in science===The Romantic Movement of the early 19th century
reshaped science by opening up new pursuits unexpected in the classical approaches of
the Enlightenment. Major breakthroughs came in biology, especially in Darwin’s theory
of evolution, as well as physics (electromagnetism), mathematics (non-Euclidean geometry, group
theory) and chemistry (organic chemistry). The decline of Romanticism occurred because
a new movement, Positivism, began to take hold of the ideals of the intellectuals after
1840 and lasted until about 1880.==Modern science==
The scientific revolution established science as a source for the growth of knowledge. During
the 19th century, the practice of science became professionalized and institutionalized
in ways that continued through the 20th century. As the role of scientific knowledge grew in
society, it became incorporated with many aspects of the functioning of nation-states.===
Natural sciences=======Physics====The scientific revolution is a convenient
boundary between ancient thought and classical physics. Nicolaus Copernicus revived the heliocentric
model of the solar system described by Aristarchus of Samos. This was followed by the first known
model of planetary motion given by Johannes Kepler in the early 17th century, which proposed
that the planets follow elliptical orbits, with the Sun at one focus of the ellipse.
Galileo (“Father of Modern Physics”) also made use of experiments to validate physical
theories, a key element of the scientific method. William Gilbert did some of the earliest
experiments with electricity and magnetism, establishing that the Earth itself is magnetic.
In 1687, Isaac Newton published the Principia Mathematica, detailing two comprehensive and
successful physical theories: Newton’s laws of motion, which led to classical mechanics;
and Newton’s Law of Gravitation, which describes the fundamental force of gravity.
During the late 18th and early 19th century, the behavior of electricity and magnetism
was studied by Luigi Galvani, Giovanni Aldini, Alessandro Volta, Michael Faraday, Georg Ohm,
and others. These studies led to the unification of the two phenomena into a single theory
of electromagnetism, by James Clerk Maxwell (known as Maxwell’s equations).
The beginning of the 20th century brought the start of a revolution in physics. The
long-held theories of Newton were shown not to be correct in all circumstances. Beginning
in 1900, Max Planck, Albert Einstein, Niels Bohr and others developed quantum theories
to explain various anomalous experimental results, by introducing discrete energy levels.
Not only did quantum mechanics show that the laws of motion did not hold on small scales,
but even more disturbingly, the theory of general relativity, proposed by Einstein in
1915, showed that the fixed background of spacetime, on which both Newtonian mechanics
and special relativity depended, could not exist. In 1925, Werner Heisenberg and Erwin
Schrödinger formulated quantum mechanics, which explained the preceding quantum theories.
The observation by Edwin Hubble in 1929 that the speed at which galaxies recede positively
correlates with their distance, led to the understanding that the universe is expanding,
and the formulation of the Big Bang theory by Georges Lemaître. In 1938 Otto Hahn and Fritz Strassmann discovered
nuclear fission with radiochemical methods, and in 1939 Lise Meitner and Otto Robert Frisch
wrote the first theoretical interpretation of the fission process, which was later improved
by Niels Bohr and John A. Wheeler. Further developments took place during World War II,
which led to the practical application of radar and the development and use of the atomic
bomb. Around this time, Chien-Shiung Wu was recruited by the Manhattan Project to help
develop a process for separating uranium metal into U-235 and U-238 isotopes by Gaseous diffusion.
She was an expert experimentalist in beta decay and weak interaction physics. Wu designed
an experiment (see Wu experiment) that enabled theoretical physicists Tsung-Dao Lee and Chen-Ning
Yang to disprove the law of parity experimentally, winning them a Nobel Prize in 1957.Though
the process had begun with the invention of the cyclotron by Ernest O. Lawrence in the
1930s, physics in the postwar period entered into a phase of what historians have called
“Big Science”, requiring massive machines, budgets, and laboratories in order to test
their theories and move into new frontiers. The primary patron of physics became state
governments, who recognized that the support of “basic” research could often lead to technologies
useful to both military and industrial applications. Currently, general relativity and quantum
mechanics are inconsistent with each other, and efforts are underway to unify the two.====Chemistry====Modern chemistry emerged from the sixteenth
through the eighteenth centuries through the material practices and theories promoted by
alchemy, medicine, manufacturing and mining. A decisive moment came when ‘chemistry’ was
distinguished from alchemy by Robert Boyle in his work The Sceptical Chymist, in 1661;
although the alchemical tradition continued for some time after his work. Other important
steps included the gravimetric experimental practices of medical chemists like William
Cullen, Joseph Black, Torbern Bergman and Pierre Macquer and through the work of Antoine
Lavoisier (Father of Modern Chemistry) on oxygen and the law of conservation of mass,
which refuted phlogiston theory. The theory that all matter is made of atoms, which are
the smallest constituents of matter that cannot be broken down without losing the basic chemical
and physical properties of that matter, was provided by John Dalton in 1803, although
the question took a hundred years to settle as proven. Dalton also formulated the law
of mass relationships. In 1869, Dmitri Mendeleev composed his periodic table of elements on
the basis of Dalton’s discoveries. The synthesis of urea by Friedrich Wöhler
opened a new research field, organic chemistry, and by the end of the 19th century, scientists
were able to synthesize hundreds of organic compounds. The later part of the 19th century
saw the exploitation of the Earth’s petrochemicals, after the exhaustion of the oil supply from
whaling. By the 20th century, systematic production of refined materials provided a ready supply
of products which provided not only energy, but also synthetic materials for clothing,
medicine, and everyday disposable resources. Application of the techniques of organic chemistry
to living organisms resulted in physiological chemistry, the precursor to biochemistry.
The 20th century also saw the integration of physics and chemistry, with chemical properties
explained as the result of the electronic structure of the atom. Linus Pauling’s book
on The Nature of the Chemical Bond used the principles of quantum mechanics to deduce
bond angles in ever-more complicated molecules. Pauling’s work culminated in the physical
modelling of DNA, the secret of life (in the words of Francis Crick, 1953). In the same
year, the Miller–Urey experiment demonstrated in a simulation of primordial processes, that
basic constituents of proteins, simple amino acids, could themselves be built up from simpler
molecules.====Geology====Geology existed as a cloud of isolated, disconnected
ideas about rocks, minerals, and landforms long before it became a coherent science.
Theophrastus’ work on rocks, Peri lithōn, remained authoritative for millennia: its
interpretation of fossils was not overturned until after the Scientific Revolution. Chinese
polymath Shen Kua (1031–1095) first formulated hypotheses for the process of land formation.
Based on his observation of fossils in a geological stratum in a mountain hundreds of miles from
the ocean, he deduced that the land was formed by erosion of the mountains and by deposition
of silt. Geology did not undergo systematic restructuring
during the Scientific Revolution, but individual theorists made important contributions. Robert
Hooke, for example, formulated a theory of earthquakes, and Nicholas Steno developed
the theory of superposition and argued that fossils were the remains of once-living creatures.
Beginning with Thomas Burnet’s Sacred Theory of the Earth in 1681, natural philosophers
began to explore the idea that the Earth had changed over time. Burnet and his contemporaries
interpreted Earth’s past in terms of events described in the Bible, but their work laid
the intellectual foundations for secular interpretations of Earth history. Modern geology, like modern chemistry, gradually
evolved during the 18th and early 19th centuries. Benoît de Maillet and the Comte de Buffon
saw the Earth as much older than the 6,000 years envisioned by biblical scholars. Jean-Étienne
Guettard and Nicolas Desmarest hiked central France and recorded their observations on
some of the first geological maps. Aided by chemical experimentation, naturalists such
as Scotland’s John Walker, Sweden’s Torbern Bergman, and Germany’s Abraham Werner created
comprehensive classification systems for rocks and minerals—a collective achievement that
transformed geology into a cutting edge field by the end of the eighteenth century. These
early geologists also proposed a generalized interpretations of Earth history that led
James Hutton, Georges Cuvier and Alexandre Brongniart, following in the steps of Steno,
to argue that layers of rock could be dated by the fossils they contained: a principle
first applied to the geology of the Paris Basin. The use of index fossils became a powerful
tool for making geological maps, because it allowed geologists to correlate the rocks
in one locality with those of similar age in other, distant localities. Over the first
half of the 19th century, geologists such as Charles Lyell, Adam Sedgwick, and Roderick
Murchison applied the new technique to rocks throughout Europe and eastern North America,
setting the stage for more detailed, government-funded mapping projects in later decades.
Midway through the 19th century, the focus of geology shifted from description and classification
to attempts to understand how the surface of the Earth had changed. The first comprehensive
theories of mountain building were proposed during this period, as were the first modern
theories of earthquakes and volcanoes. Louis Agassiz and others established the reality
of continent-covering ice ages, and “fluvialists” like Andrew Crombie Ramsay argued that river
valleys were formed, over millions of years by the rivers that flow through them. After
the discovery of radioactivity, radiometric dating methods were developed, starting in
the 20th century. Alfred Wegener’s theory of “continental drift” was widely dismissed
when he proposed it in the 1910s, but new data gathered in the 1950s and 1960s led to
the theory of plate tectonics, which provided a plausible mechanism for it. Plate tectonics
also provided a unified explanation for a wide range of seemingly unrelated geological
phenomena. Since 1970 it has served as the unifying principle in geology.
Geologists’ embrace of plate tectonics became part of a broadening of the field from a study
of rocks into a study of the Earth as a planet. Other elements of this transformation include:
geophysical studies of the interior of the Earth, the grouping of geology with meteorology
and oceanography as one of the “earth sciences”, and comparisons of Earth and the solar system’s
other rocky planets.====Astronomy====Aristarchus of Samos published work on how
to determine the sizes and distances of the Sun and the Moon, and Eratosthenes used this
work to figure the size of the Earth. Hipparchus later discovered the precession of the Earth.
Advances in astronomy and in optical systems in the 19th century resulted in the first
observation of an asteroid (1 Ceres) in 1801, and the discovery of Neptune in 1846.
In 1925, Cecilia Payne-Gaposchkin determined that stars were composed mostly of Hydrogen
and Helium. She was dissuaded by astronomer Henry Norris Russell from publishing this
finding in her Ph.D.thesis because of the widely held belief that stars had the same
composition as the Earth. However, four years later, in 1929, Henry Norris Russell came
to the same conclusion through different reasoning and the discovery was eventually accepted.George
Gamow, Ralph Alpher, and Robert Herman had calculated that there should be evidence for
a Big Bang in the background temperature of the universe. In 1964, Arno Penzias and Robert
Wilson discovered a 3 Kelvin background hiss in their Bell Labs radiotelescope (the Holmdel
Horn Antenna), which was evidence for this hypothesis, and formed the basis for a number
of results that helped determine the age of the universe.
Supernova SN1987A was observed by astronomers on Earth both visually, and in a triumph for
neutrino astronomy, by the solar neutrino detectors at Kamiokande. But the solar neutrino
flux was a fraction of its theoretically expected value. This discrepancy forced a change in
some values in the standard model for particle physics.====Biology and medicine====William Harvey published De Motu Cordis in
1628, which revealed his conclusions based on his extensive studies of vertebrate circulatory
systems. He identified the central role of the heart, arteries, and veins in producing
blood movement in a circuit, and failed to find any confirmation of Galen’s
pre-existing notions of heating and cooling functions. The History early modern biology
and medicine is often told through the search for the seat of the soul. Galen in his descriptions
of his foundational work in medicine presents the distinctions between arteries, veins,
and nerves using the vocabulary of the soul.In 1847, Hungarian physician Ignác Fülöp Semmelweis
dramatically reduced the occurrency of puerperal fever by simply requiring physicians to wash
their hands before attending to women in childbirth. This discovery predated the germ theory of
disease. However, Semmelweis’ findings were not appreciated by his contemporaries and
handwashing came into use only with discoveries by British surgeon Joseph Lister, who in 1865
proved the principles of antisepsis. Lister’s work was based on the important findings by
French biologist Louis Pasteur. Pasteur was able to link microorganisms with disease,
revolutionizing medicine. He also devised one of the most important methods in preventive
medicine, when in 1880 he produced a vaccine against rabies. Pasteur invented the process
of pasteurization, to help prevent the spread of disease through milk and other foods.Perhaps
the most prominent, controversial and far-reaching theory in all of science has been the theory
of evolution by natural selection put forward by the British naturalist Charles Darwin in
his book On the Origin of Species in 1859. Darwin proposed that the features of all living
things, including humans, were shaped by natural processes over long periods of time. The theory
of evolution in its current form affects almost all areas of biology. Implications of evolution
on fields outside of pure science have led to both opposition and support from different
parts of society, and profoundly influenced the popular understanding of “man’s place
in the universe”. In the early 20th century, the study of heredity became a major investigation
after the rediscovery in 1900 of the laws of inheritance developed by the Moravian monk
Gregor Mendel in 1866. Mendel’s laws provided the beginnings of the study of genetics, which
became a major field of research for both scientific and industrial research. By 1953,
James D. Watson, Francis Crick and Maurice Wilkins clarified the basic structure of DNA,
the genetic material for expressing life in all its forms. In the late 20th century, the
possibilities of genetic engineering became practical for the first time, and a massive
international effort began in 1990 to map out an entire human genome (the Human Genome
Project).====Ecology====The discipline of ecology typically traces
its origin to the synthesis of Darwinian evolution and Humboldtian biogeography, in the late
19th and early 20th centuries. Equally important in the rise of ecology, however, were microbiology
and soil science—particularly the cycle of life concept, prominent in the work Louis
Pasteur and Ferdinand Cohn. The word ecology was coined by Ernst Haeckel, whose particularly
holistic view of nature in general (and Darwin’s theory in particular) was important in the
spread of ecological thinking. In the 1930s, Arthur Tansley and others began developing
the field of ecosystem ecology, which combined experimental soil science with physiological
concepts of energy and the techniques of field biology.===Social sciences===Successful use of the scientific method in
the physical sciences led to the same methodology being adapted to better understand the many
fields of human endeavor. From this effort the social sciences have been developed.====Political science====Political science is a late arrival in terms
of social sciences. However, the discipline has a clear set of antecedents such as moral
philosophy, political philosophy, political economy, history, and other fields concerned
with normative determinations of what ought to be and with deducing the characteristics
and functions of the ideal form of government. The roots of politics are in prehistory. In
each historic period and in almost every geographic area, we can find someone studying politics
and increasing political understanding. In Western culture, the study of politics
is first found in Ancient Greece. The antecedents of European politics trace their roots back
even earlier than Plato and Aristotle, particularly in the works of Homer, Hesiod, Thucydides,
Xenophon, and Euripides. Later, Plato analyzed political systems, abstracted their analysis
from more literary- and history- oriented studies and applied an approach we would understand
as closer to philosophy. Similarly, Aristotle built upon Plato’s analysis to include historical
empirical evidence in his analysis. An ancient Indian treatise on statecraft,
economic policy and military strategy by Kautilya and Viṣhṇugupta, who are traditionally
identified with Chāṇakya (c. 350–283 BCE). In this treatise, the behaviors and
relationships of the people, the King, the State, the Government Superintendents, Courtiers,
Enemies, Invaders, and Corporations are analysed and documented. Roger Boesche describes the
Arthaśāstra as “a book of political realism, a book analysing how the political world does
work and not very often stating how it ought to work, a book that frequently discloses
to a king what calculating and sometimes brutal measures he must carry out to preserve the
state and the common good.”During the rule of Rome, famous historians such as Polybius,
Livy and Plutarch documented the rise of the Roman Republic, and the organization and histories
of other nations, while statesmen like Julius Caesar, Cicero and others provided us with
examples of the politics of the republic and Rome’s empire and wars. The study of politics
during this age was oriented toward understanding history, understanding methods of governing,
and describing the operation of governments. With the fall of the Western Roman Empire,
there arose a more diffuse arena for political studies. The rise of monotheism and, particularly
for the Western tradition, Christianity, brought to light a new space for politics and political
action. During the Middle Ages, the study of politics was widespread in the churches
and courts. Works such as Augustine of Hippo’s The City of God synthesized current philosophies
and political traditions with those of Christianity, redefining the borders between what was religious
and what was political. Most of the political questions surrounding the relationship between
Church and State were clarified and contested in this period.
In the Middle East and later other Islamic areas, works such as the Rubaiyat of Omar
Khayyam and Epic of Kings by Ferdowsi provided evidence of political analysis, while the
Islamic Aristotelians such as Avicenna and later Maimonides and Averroes, continued Aristotle’s
tradition of analysis and empiricism, writing commentaries on Aristotle’s works.
During the Italian Renaissance, Niccolò Machiavelli established the emphasis of modern political
science on direct empirical observation of political institutions and actors. Later,
the expansion of the scientific paradigm during the Enlightenment further pushed the study
of politics beyond normative determinations. In particular, the study of statistics, to
study the subjects of the state, has been applied to polling and voting.
In the 20th century, the study of ideology, behaviouralism and international relations
led to a multitude of ‘pol-sci’ subdisciplines including rational choice theory, voting theory,
game theory (also used in economics), psephology, political geography/geopolitics, political
psychology/political sociology, political economy, policy analysis, public administration,
comparative political analysis and peace studies/conflict analysis.====Linguistics====Historical linguistics emerged as an independent
field of study at the end of the 18th century. Sir William Jones proposed that Sanskrit,
Persian, Greek, Latin, Gothic, and Celtic languages all shared a common base. After
Jones, an effort to catalog all languages of the world was made throughout the 19th
century and into the 20th century. Publication of Ferdinand de Saussure’s Cours de linguistique
générale created the development of descriptive linguistics. Descriptive linguistics, and
the related structuralism movement caused linguistics to focus on how language changes
over time, instead of just describing the differences between languages. Noam Chomsky
further diversified linguistics with the development of generative linguistics in the 1950s. His
effort is based upon a mathematical model of language that allows for the description
and prediction of valid syntax. Additional specialties such as sociolinguistics, cognitive
linguistics, and computational linguistics have emerged from collaboration between linguistics
and other disciplines.====Economics====The basis for classical economics forms Adam
Smith’s An Inquiry into the Nature and Causes of the Wealth of Nations, published in 1776.
Smith criticized mercantilism, advocating a system of free trade with division of labour.
He postulated an “invisible hand” that regulated economic systems made up of actors guided
only by self-interest. Karl Marx developed an alternative economic theory, called Marxian
economics. Marxian economics is based on the labor theory of value and assumes the value
of good to be based on the amount of labor required to produce it. Under this assumption,
capitalism was based on employers not paying the full value of workers labor to create
profit. The Austrian School responded to Marxian economics by viewing entrepreneurship as driving
force of economic development. This replaced the labor theory of value by a system of supply
and demand. In the 1920s, John Maynard Keynes prompted
a division between microeconomics and macroeconomics. Under Keynesian economics macroeconomic trends
can overwhelm economic choices made by individuals. Governments should promote aggregate demand
for goods as a means to encourage economic expansion. Following World War II, Milton
Friedman created the concept of monetarism. Monetarism focuses on using the supply and
demand of money as a method for controlling economic activity. In the 1970s, monetarism
has adapted into supply-side economics which advocates reducing taxes as a means to increase
the amount of money available for economic expansion.
Other modern schools of economic thought are New Classical economics and New Keynesian
economics. New Classical economics was developed in the 1970s, emphasizing solid microeconomics
as the basis for macroeconomic growth. New Keynesian economics was created partially
in response to New Classical economics, and deals with how inefficiencies in the market
create a need for control by a central bank or government.
The above “history of economics” reflects modern economic textbooks and this means that
the last stage of a science is represented as the culmination of its history (Kuhn, 1962).
The “invisible hand” mentioned in a lost page in the middle of a chapter in the middle of
the “Wealth of Nations”, 1776, advances as Smith’s central message. It is played down
that this “invisible hand” acts only “frequently” and that it is “no part of his [the individual’s]
intentions” because competition leads to lower prices by imitating “his” invention. That
this “invisible hand” prefers “the support of domestic to foreign industry” is cleansed—often
without indication that part of the citation is truncated. The opening passage of the “Wealth”
containing Smith’s message is never mentioned as it cannot be integrated into modern theory:
“Wealth” depends on the division of labour which changes with market volume and on the
proportion of productive to Unproductive labor.====Psychology====The end of the 19th century marks the start
of psychology as a scientific enterprise. The year 1879 is commonly seen as the start
of psychology as an independent field of study. In that year Wilhelm Wundt founded the first
laboratory dedicated exclusively to psychological research (in Leipzig). Other important early
contributors to the field include Hermann Ebbinghaus (a pioneer in memory studies),
Ivan Pavlov (who discovered classical conditioning), William James, and Sigmund Freud. Freud’s
influence has been enormous, though more as cultural icon than a force in scientific psychology.
The 20th century saw a rejection of Freud’s theories as being too unscientific, and a
reaction against Edward Titchener’s atomistic approach of the mind. This led to the formulation
of behaviorism by John B. Watson, which was popularized by B.F. Skinner. Behaviorism proposed
epistemologically limiting psychological study to overt behavior, since that could be reliably
measured. Scientific knowledge of the “mind” was considered too metaphysical, hence impossible
to achieve. The final decades of the 20th century have
seen the rise of a new interdisciplinary approach to studying human psychology, known collectively
as cognitive science. Cognitive science again considers the mind as a subject for investigation,
using the tools of psychology, linguistics, computer science, philosophy, and neurobiology.
New methods of visualizing the activity of the brain, such as PET scans and CAT scans,
began to exert their influence as well, leading some researchers to investigate the mind by
investigating the brain, rather than cognition. These new forms of investigation assume that
a wide understanding of the human mind is possible, and that such an understanding may
be applied to other research domains, such as artificial intelligence.====Sociology====Ibn Khaldun can be regarded as the earliest
scientific systematic sociologist. The modern sociology emerged in the early 19th century
as the academic response to the modernization of the world. Among many early sociologists
(e.g., Émile Durkheim), the aim of sociology was in structuralism, understanding the cohesion
of social groups, and developing an “antidote” to social disintegration. Max Weber was concerned
with the modernization of society through the concept of rationalization, which he believed
would trap individuals in an “iron cage” of rational thought. Some sociologists, including
Georg Simmel and W. E. B. Du Bois, utilized more microsociological, qualitative analyses.
This microlevel approach played an important role in American sociology, with the theories
of George Herbert Mead and his student Herbert Blumer resulting in the creation of the symbolic
interactionism approach to sociology. In particular, just Auguste Comte, illustrated
with his work the transition from a theological to a metaphysical stage and, from this, to
a positive stage. Comte took care of the classification of the sciences as well as a transit of humanity
towards a situation of progress attributable to a re-examination of nature according to
the affirmation of ‘sociality’ as the basis of
the scientifically interpreted society (Cfr. Guglielmo Rinzivillo, Natura, cultura e induzione
nell’età delle scienze. Fatti e idee del movimento scientifico in Francia e Inghilterra,
Roma, Nuova Cultura, 2015, pp. 79–, ISBN 978-8868124977).
American sociology in the 1940s and 1950s was dominated largely by Talcott Parsons,
who argued that aspects of society that promoted structural integration were therefore “functional”.
This structural functionalism approach was questioned in the 1960s, when sociologists
came to see this approach as merely a justification for inequalities present in the status quo.
In reaction, conflict theory was developed, which was based in part on the philosophies
of Karl Marx. Conflict theorists saw society as an arena in which different groups compete
for control over resources. Symbolic interactionism also came to be regarded as central to sociological
thinking. Erving Goffman saw social interactions as a stage performance, with individuals preparing
“backstage” and attempting to control their audience through impression management. While
these theories are currently prominent in sociological thought, other approaches exist,
including feminist theory, post-structuralism, rational choice theory, and postmodernism.====Anthropology====Anthropology can best be understood as an
outgrowth of the Age of Enlightenment. It was during this period that Europeans attempted
systematically to study human behaviour. Traditions of jurisprudence, history, philology and sociology
developed during this time and informed the development of the social sciences of which
anthropology was a part. At the same time, the romantic reaction to
the Enlightenment produced thinkers such as Johann Gottfried Herder and later Wilhelm
Dilthey whose work formed the basis for the culture concept which is central to the discipline.
Traditionally, much of the history of the subject was based on colonial encounters between
Western Europe and the rest of the world, and much of 18th- and 19th-century anthropology
is now classed as scientific racism. During the late 19th-century, battles over
the “study of man” took place between those of an “anthropological” persuasion (relying
on anthropometrical techniques) and those of an “ethnological” persuasion (looking at
cultures and traditions), and these distinctions became part of the later divide between physical
anthropology and cultural anthropology, the latter ushered in by the students of Franz
Boas. In the mid-20th century, much of the methodologies
of earlier anthropological and ethnographical study were reevaluated with an eye towards
research ethics, while at the same time the scope of investigation has broadened far beyond
the traditional study of “primitive cultures” (scientific practice itself is often an arena
of anthropological study). The emergence of paleoanthropology, a scientific
discipline which draws on the methodologies of paleontology, physical anthropology and
ethology, among other disciplines, and increasing in scope and momentum from the mid-20th century,
continues to yield further insights into human origins, evolution, genetic and cultural heritage,
and perspectives on the contemporary human predicament as well.===Emerging disciplines===
During the 20th century, a number of interdisciplinary scientific fields have emerged. Examples include:
Communication studies combines animal communication, information theory, marketing, public relations,
telecommunications and other forms of communication. Computer science, built upon a foundation
of theoretical linguistics, discrete mathematics, and electrical engineering, studies the nature
and limits of computation. Subfields include computability, computational complexity, database
design, computer networking, artificial intelligence, and the design of computer hardware. One area
in which advances in computing have contributed to more general scientific development is
by facilitating large-scale archiving of scientific data. Contemporary computer science typically
distinguishes itself by emphasising mathematical ‘theory’
in contrast to the practical emphasis of software engineering.
Environmental science is an interdisciplinary field. It draws upon the disciplines of biology,
chemistry, earth sciences, ecology, geography, mathematics, and physics.
Materials science has its roots in metallurgy, mineralogy, and crystallography. It combines
chemistry, physics, and several engineering disciplines. The field studies metals, ceramics,
glass, plastics, semiconductors, and composite materials.
Neuroscience is a multidisciplinary branch of science that combines physiology, neuroanatomy,
molecular biology, developmental biology, cytology, mathematical modeling and psychology
to understand the fundamental and emergent properties of neurons, glia, nervous systems
and neural circuits.==Academic study==As an academic field, history of science and
technology began with the publication of William Whewell’s History of the Inductive Sciences
(first published in 1837). A more formal study of the history of science as an independent
discipline was launched by George Sarton’s publications, Introduction to the History
of Science (1927) and the Isis journal (founded in 1912). Sarton exemplified the early 20th-century
view of the history of science as the history of great men and great ideas. He shared with
many of his contemporaries a Whiggish belief in history as a record of the advances and
delays in the march of progress. The history of science was not a recognized subfield of
American history in this period, and most of the work was carried out by interested
scientists and physicians rather than professional historians. With the work of I. Bernard Cohen
at Harvard, the history of science became an established subdiscipline of history after
1945.The history of mathematics, history of technology, and history of philosophy are
distinct areas of research and are covered in other articles. Mathematics is closely
related to but distinct from natural science (at least in the modern conception). Technology
is likewise closely related to but clearly differs from the search for empirical truth.
History of science is an academic discipline, with an international community of specialists.
Main professional organizations for this field include the History of Science Society, the
British Society for the History of Science, and the European Society for the History of
Science.===Theories and sociology of the history
of science===Much of the study of the history of science
has been devoted to answering questions about what science is, how it functions, and whether
it exhibits large-scale patterns and trends. The sociology of science in particular has
focused on the ways in which scientists work, looking closely at the ways in which they
“produce” and “construct” scientific knowledge. Since the 1960s, a common trend in science
studies (the study of the sociology and history of science) has been to emphasize the “human
component” of scientific knowledge, and to de-emphasize the view that scientific data
are self-evident, value-free, and context-free. The field of Science and Technology Studies,
an area that overlaps and often informs historical studies of science, focuses on the social
context of science in both contemporary and historical periods.
Humboldtian science refers to the early 19th century approach of combining scientific field
work with the age of Romanticism sensitivity, ethics and aesthetic ideals. It helped to
install natural history as a separate field, gave base for ecology and was based on the
role model of scientist, naturalist and explorer Alexander von Humboldt. The later 19th century
positivism asserted that all authentic knowledge allows verification and that all authentic
knowledge assumes that the only valid knowledge is scientific.A major subject of concern and
controversy in the philosophy of science has been the nature of theory change in science.
Karl Popper argued that scientific knowledge is progressive and cumulative; Thomas Kuhn,
that scientific knowledge moves through “paradigm shifts” and is not necessarily progressive;
and Paul Feyerabend, that scientific knowledge is not cumulative or progressive and that
there can be no demarcation in terms of method between science and any other form of investigation.The
mid 20th century saw a series of studies relying to the role of science in a social context,
starting from Thomas Kuhn’s The Structure of Scientific Revolutions in 1962. It opened
the study of science to new disciplines by suggesting that the evolution of science was
in part sociologically determined and that positivism did not explain the actual interactions
and strategies of the human participants in science. As Thomas Kuhn put it, the history
of science may be seen in more nuanced terms, such as that of competing paradigms or conceptual
systems in a wider matrix that includes intellectual, cultural, economic and political themes outside
of science. “Partly by selection and partly by distortion, the scientists of earlier ages
are implicitly presented as having worked upon the same set of fixed problems and in
accordance with the same set of fixed canons that the most recent revolution in scientific
theory and method made seem scientific.”Further studies, e.g. Jerome Ravetz 1971 Scientific
Knowledge and its Social Problems referred to the role of the scientific community, as
a social construct, in accepting or rejecting (objective) scientific knowledge. The Science
wars of the 1990 were about the influence of especially French philosophers, which denied
the objectivity of science in general or seemed to do so. They described as well differences
between the idealized model of a pure science and the actual scientific practice; while
scientism, a revival of the positivism approach, saw in precise measurement and rigorous calculation
the basis for finally settling enduring metaphysical and moral controversies. However, more recently
some of the leading critical theorists have recognized that their postmodern deconstructions
have at times been counter-productive, and are providing intellectual ammunition for
reactionary interests. Bruno Latour noted that “dangerous extremists are using the very
same argument of social construction to destroy hard-won evidence that could save our lives.
Was I wrong to participate in the invention of this field known as science studies? Is
it enough to say that we did not really mean what we meant?”===Plight of many scientific innovators===
One recurring observation in the history of science involves the struggle for recognition
of first-rate scientists working on the periphery of the scientific establishment. For instance,
the great physicist Lord Rayleigh looked back (cited here) on John James Waterston’s seminal
paper on the kinetic theory of gases. The history of the neglect of Waterston’s path-breaking
article, Rayleigh felt, suggests that “a young author who believes himself capable of great
things would usually do well to secure favourable recognition of the scientific world . . . before
embarking upon higher flights.” William Harvey’s experiences led him to an
even more pessimistic view:”But what remains to be said about the quantity and source of
the blood which thus passes, is of so novel and unheard-of character that I not only fear
injury to myself from the envy of a few, but I tremble lest I have mankind at large for
my enemies, so much doth wont and custom, that become as another nature, and doctrine
once sown and that hath struck deep root, and respect for antiquity, influence all men.”In
more general terms, Robert K. Merton remarks that “the history of science abounds in instances
of basic papers having been written by comparatively unknown scientists, only to be rejected or
neglected for years.”==See also

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