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Physicists
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Anaximander of Miletus, Philosopher
Anaximander, Ionian philosopher of Miletus, the first Greek known to have written (c.546) a book in prose, a treatise on nature, now lost except for one quotation. It was... |
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Aristarchus, Sun at center of Universe
Aristarchus of Samosis the first person we know of who suggested that the earth might go around the sun and not the other way around. He figured this out by looking at th... |
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Hipparchus, Astronomer
Hipparchus was the most important Greek astronomers of his time. He very accurately cataloged over 1,000 stars and invented the mathematical science of trigonometry. Ptol... |
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Ptolemy, Astronomer / Geographer
Claudius Ptolemy lived in Alexandria (in Egypt) from approx. 87 -150 AD. He was an astronomer, mathematician and geographer. He codified the Greek geocentric view of the... |
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Ibn al-Haytham, Father of Optics
Ibn al-Haytham was an Arab or Persian Muslim polymath who made significant contributions to the principles of optics, as well as to anatomy, astronomy, engineering, mathe... |
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Copernicus, Earth moves around the Sun
Nicolaus Copernicus was an astronomer who provided the first modern formulation of a heliocentric (sun-centered) theory of the solar system in his epochal book, De revolu... |
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Tycho Brahe
Tycho Brahe was born in Skane, then in Denmark, now in Sweden. His contributions to astronomy were enormous. He not only designed and built instruments, he also calibrate... |
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Galileo Timeline
A detailed chronology of Galileo's life. Galileo invented many mechanical devices other than the pump, such as the hydrostatic balance. But perhaps his most famous invent... |
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Johannes Kepler, Laws Planetary Motion
Johannes Kepler is now chiefly remembered for discovering the three laws of planetary motion that bear his name published in 1609 and 1619). He also did important work in... |
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Pierre Gassendi, French Scientist
Pierre Gassendi was a French philosopher, priest, scientist, astronomer/astrologer, and mathematician, best known for attempting to reconcile Epicurean atomism with Chris... |
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Giovanni Cassini, Astronomer
Giovanni Domenico Cassini studied mathematics and astronomy at the Jesuits and became professor of astronomy at Bologna, as well as fortress builder, at age 25. There, he... |
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Christiaan Huygens, Dutch Scientist
Christiaan Huygens came from an important Dutch family. Huygens's first publications in 1651 and 1654 considered mathematical problems. The 1651 publication Cyclometriae... |
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Isaac Newton, Theory of Gravitation
Newton laid the foundation for differential and integral calculus. His work on optics and gravitation make him one of the greatest scientists the world has known. Newton'... |
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Edmond Halley, Astronomer
Edmond Halley, Astronomer, remembered because his name is attached to a comet. Leaving Queen's College, Oxford, without a degree in 1676, he went to St Helena to map the... |
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Anders Celsius, Temperature Scale
Anders Celsius became famous for his recommendation in 1742 to divide the temperature scale of a mercury thermometer at 760mm mercury air pressure into 100 degrees, where... |
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