The History of Science Portal
The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of science: natural, social, and formal. Protoscience, early sciences, and natural philosophies such as alchemy and astrology during the Bronze Age, Iron Age, classical antiquity, and the Middle Ages declined during the early modern period after the establishment of formal disciplines of science in the Age of Enlightenment.
Science's earliest roots can be traced to Ancient Egypt and Mesopotamia around 3000 to 1200 BCE. These civilizations' contributions to mathematics, astronomy, and medicine influenced later Greek natural philosophy of classical antiquity, wherein formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages, but continued to thrive in the Greek-speaking Byzantine Empire. Aided by translations of Greek texts, the Hellenistic worldview was preserved and absorbed into the Arabic-speaking Muslim world during the Islamic Golden Age. The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th century revived the learning of natural philosophy in the West. Traditions of early science were also developed in ancient India and separately in ancient China, the Chinese model having influenced Vietnam, Korea and Japan before Western exploration. Among the Pre-Columbian peoples of Mesoamerica, the Zapotec civilization established their first known traditions of astronomy and mathematics for producing calendars, followed by other civilizations such as the Maya.
Natural philosophy was transformed during the Scientific Revolution in 16th- to 17th-century Europe, as new ideas and discoveries departed from previous Greek conceptions and traditions. The New Science that emerged was more mechanistic in its worldview, more integrated with mathematics, and more reliable and open as its knowledge was based on a newly defined scientific method. More "revolutions" in subsequent centuries soon followed. The chemical revolution of the 18th century, for instance, introduced new quantitative methods and measurements for chemistry. In the 19th century, new perspectives regarding the conservation of energy, age of Earth, and evolution came into focus. And in the 20th century, new discoveries in genetics and physics laid the foundations for new sub disciplines such as molecular biology and particle physics. Moreover, industrial and military concerns as well as the increasing complexity of new research endeavors ushered in the era of "big science," particularly after World War II. (Full article...)
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The history of Mars observation is about the recorded history of observation of the planet Mars. Some of the early records of Mars' observation date back to the era of the ancient Egyptian astronomers in the 2nd millennium BCE. Chinese records about the motions of Mars appeared before the founding of the Zhou dynasty (1045 BCE). Detailed observations of the position of Mars were made by Babylonian astronomers who developed arithmetic techniques to predict the future position of the planet. The ancient Greek philosophers and Hellenistic astronomers developed a geocentric model to explain the planet's motions. Measurements of Mars' angular diameter can be found in ancient Greek and Indian texts. In the 16th century, Nicolaus Copernicus proposed a heliocentric model for the Solar System in which the planets follow circular orbits about the Sun. This was revised by Johannes Kepler, yielding an elliptic orbit for Mars that more accurately fitted the observational data.
The first telescopic observation of Mars was by Galileo Galilei in 1610. Within a century, astronomers discovered distinct albedo features on the planet, including the dark patch Syrtis Major Planum and polar ice caps. They were able to determine the planet's rotation period and axial tilt. These observations were primarily made during the time intervals when the planet was located in opposition to the Sun, at which points Mars made its closest approaches to the Earth.
Better telescopes developed early in the 19th century allowed permanent Martian albedo features to be mapped in detail. The first crude map of Mars was published in 1840, followed by more refined maps from 1877 onward. When astronomers mistakenly thought they had detected the spectroscopic signature of water in the Martian atmosphere, the idea of life on Mars became popularized among the public. Percival Lowell believed he could see a network of artificial canals on Mars. These linear features later proved to be an optical illusion, and the atmosphere was found to be too thin to support an Earth-like environment. (Full article...)Selected image
This famous color photograph of the "Trinity" shot, the first nuclear test explosion, was taken by Jack Aeby on July 16, 1945. Aeby was a member of the Special Engineering Detachment at Los Alamos National Laboratory, working under the aegis of the Manhattan Project.
Did you know
... that the Merton Thesis—an argument connecting Protestant pietism with the rise of experimental science—dates back to Robert K. Merton's 1938 doctoral dissertation, which launched the historical sociology of science?
...that a number of scientific disciplines, such as computer science and seismology, emerged because of military funding?
...that the principle of conservation of energy was formulated independently by at least 12 individuals between 1830 and 1850?
Selected Biography -
Hans Albrecht Bethe (German pronunciation: [ˈhans ˈbeːtə] ; July 2, 1906 – March 6, 2005) was a German-American theoretical physicist who made major contributions to nuclear physics, astrophysics, quantum electrodynamics, and solid-state physics, and who won the 1967 Nobel Prize in Physics for his work on the theory of stellar nucleosynthesis. For most of his career, Bethe was a professor at Cornell University.
During World War II, he was head of the Theoretical Division at the secret Los Alamos laboratory that developed the first atomic bombs. There he played a key role in calculating the critical mass of the weapons and developing the theory behind the implosion method used in both the Trinity test and the "Fat Man" weapon dropped on Nagasaki in August 1945. (Full article...)Selected anniversaries
- 1855 - Death of John Gorrie, American scientist (b. 1802)
- 1868 - Birth of George Ellery Hale, American astronomer (d. 1938)
- 1895 - Death of Thomas Henry Huxley, English scientist (b. 1825)
- 1900 - Death of Ivan Mikheevich Pervushin, Russian mathematician (b. 1900)
- 1914 - Birth of Christos Papakyriakopoulos, Greek mathematician (d. 1976)
- 1927 - First test of Wallace Turnbull's Controllable pitch propeller
- 2004 - Death of Bernard Babior, American biochemist (b. 1935)
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General images
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The physician Hippocrates, known as the "Father of Modern Medicine" (from Science in classical antiquity) -
Portrait of Johannes Kepler, one of the founders and fathers of modern astronomy, the scientific method, natural and modern science (from Scientific Revolution) -
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The French Academy of Sciences was established in 1666. (from Scientific Revolution) -
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Apollonius wrote a comprehensive study of conic sections in the Conics. (from Science in classical antiquity) -
An early Western Han (202 BC – AD 9) silk map found in tomb 3 of Mawangdui, depicting the Kingdom of Changsha and Kingdom of Nanyue in southern China (note: the south direction is oriented at the top) (from Science in the ancient world) -
Air pump built by Robert Boyle. Many new instruments were devised in this period, which greatly aided in the expansion of scientific knowledge. (from Scientific Revolution) -
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Diagram of the Antikythera mechanism, an analog astronomical calculator (from Science in classical antiquity) -
The eye according to Hunayn ibn Ishaq, c. 1200 (from Science in the medieval Islamic world) -
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The four classical elements (fire, air, water, earth) of Empedocles illustrated with a burning log. The log releases all four elements as it is destroyed. (from Science in classical antiquity) -
The physical exercise chart; a painting on silk depicting calisthenics; unearthed in 1973 in Hunan Province, China, from the 2nd-century BC Western Han burial site of Mawangdui, Tomb Number 3. (from Science in the ancient world) -
Mesopotamian clay tablet-letter from 2400 BC, Louvre. (from King of Lagash, found at Girsu) (from Science in the ancient world) -
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Diagram from William Gilbert's De Magnete, a pioneering 1600 work of experimental science (from Scientific Revolution) -
Matteo Ricci (left) and Xu Guangqi (right) in Athanasius Kircher, La Chine ... Illustrée, Amsterdam, 1670 (from Scientific Revolution) -
The Abbasid Caliphate, 750–1261 (and later in Egypt) at its height, c. 850 (from Science in the medieval Islamic world) -
Title page from The Sceptical Chymist, a foundational text of chemistry, written by Robert Boyle in 1661 (from Scientific Revolution) -
Francis Bacon was a pivotal figure in establishing the scientific method of investigation. Portrait by Frans Pourbus the Younger (1617). (from Scientific Revolution) -
Quince, cypress, and sumac trees, in Zakariya al-Qazwini's 13th century Wonders of Creation (from Science in the medieval Islamic world) -
Ibn Sina teaching the use of drugs. 15th-century Great Canon of Avicenna (from Science in the medieval Islamic world) -
The first treatise about optics by Johannes Kepler, Ad Vitellionem paralipomena quibus astronomiae pars optica traditur (1604) (from Scientific Revolution) -
Ibn al-Haytham (Alhazen), (965–1039 Iraq). A polymath, sometimes considered the father of modern scientific methodology due to his emphasis on experimental data and on the reproducibility of its results. (from Science in the medieval Islamic world) -
Page from the Kitāb al-Hayawān (Book of Animals) by Al-Jahiz. Ninth century (from Science in the medieval Islamic world) -
Ancient India was an early leader in metallurgy, as evidenced by the wrought iron Pillar of Delhi. (from Science in the ancient world) -
The Royal Society had its origins in Gresham College in the City of London, and was the first scientific society in the world. (from Scientific Revolution) -
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Isaac Newton's Principia developed the first set of unified scientific laws. (from Scientific Revolution) -
George Trebizond's Latin translation of Ptolemy's Almagest (c. 1451) (from Science in classical antiquity) -
A 19th-century portrait of Pliny the Elder (from Science in classical antiquity) -
A mosaic depicting Plato's Academy, from the Villa of T. Siminius Stephanus in Pompeii (1st century AD). (from Science in classical antiquity) -
Ptolemaic model of the spheres for Venus, Mars, Jupiter, and Saturn. Georg von Peuerbach, Theoricae novae planetarum, 1474. (from Scientific Revolution) -
Scholar Nersi with Anahita in Persia (from Science in the ancient world) -
An ivory set of Napier's Bones, an early calculating device invented by John Napier (from Scientific Revolution) -
A page from al-Khwarizmi's Algebra (from Science in the medieval Islamic world) -
Image of veins from William Harvey's Exercitatio Anatomica de Motu Cordis et Sanguinis in Animalibus. Harvey demonstrated that blood circulated around the body, rather than being created in the liver. (from Scientific Revolution) -
The Tusi couple, a mathematical device invented by the Persian polymath Nasir al-Din Tusi to model the not perfectly circular motions of the planets (from Science in the medieval Islamic world) -
Schematics of the Antikythera mechanism (from Science in the ancient world)
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Surviving fragment of the first World Map of Piri Reis (1513) (from Science in the medieval Islamic world) -
Self trimming lamp in Ahmad ibn Mūsā ibn Shākir's treatise on mechanical devices, c. 850 (from Science in the medieval Islamic world) -
A coloured illustration from Mansur's Anatomy, c. 1450 (from Science in the medieval Islamic world) -
Omar Khayyam's "Cubic equation and intersection of conic sections" (from Science in the medieval Islamic world) -
Islamic expansion:under Muhammad, 622–632under Rashidun caliphs, 632–661under Umayyad caliphs, 661–750(from Science in the medieval Islamic world) -
An Egyptian practice of treating migraine in ancient Egypt. (from Science in the ancient world) -
Vesalius's intricately detailed drawings of human dissections in Fabrica helped to overturn the medical theories of Galen. (from Scientific Revolution) -
Pliny the Elder: an imaginative 19th-century portrait (from Science in the ancient world)
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Detail showing columns of glyphs from a portion of the 2nd century CE La Mojarra Stela 1 (found near La Mojarra, Veracruz, Mexico); the left column gives a Long Count calendar date of 8.5.16.9.7, or 156 CE. The other columns visible are glyphs from the Epi-Olmec script. (from Science in the ancient world) -
Modern copy of al-Idrisi's 1154 Tabula Rogeriana, upside-down, north at top (from Science in the medieval Islamic world) -
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