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Johannes Kepler

mathematics
Pierre Bouguer – Child Prodigy and ‘Father of Photometry’

Pierre Bouguer – Child Prodigy and ‘Father of Photometry’

Tabea Tietz
On February 16, 1698, French mathematician, geophysicist, geodesist, and astronomerPierre Bouguer was born. In 1735 Bouguer sailed with Charles Marie de La Condamine on a scientific mission to Peru, in order to measure a degree of the meridian arc near the equator. He is also known as “the father of naval architecture” and the “father of photometry“. Pierre Bouguer – Early Life Pierre Bouguer was born in Le Croisic at the French Atlantic…
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mathematics
Standing on the Shoulders of Giants – Sir Isaac Newton

Standing on the Shoulders of Giants – Sir Isaac Newton

Harald Sack
On January 4, 1643 [N.S.] (25 December 1642 [O.S.]), Sir Isaac Newton, famous physicist, mathematician, astronomer, natural philosopher, alchemist and theologian, was born. With his Principia Newton laid the foundation of modern classical mechanics. Besides he constructed the very first reflecting telescope and independent of Gottfried Wilhelm Leibniz developed differential and integral calculus [10]. “We are to admit no more causes of natural things than such as are both true and sufficient to…
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astronomy
Hipparchus of Nicaea and the Precession of the Equinoxes

Hipparchus of Nicaea and the Precession of the Equinoxes

Harald Sack
Hipparchus of Nicaea was a Greek astronomer, geographer, and mathematician in the second century BC. He is considered the founder of trigonometry but is most famous for his incidental discovery of precession of the equinoxes. His other reputed achievements include the discovery and measurement of Earth‘s precession, the compilation of the first comprehensive star catalog of the western world, and possibly the invention of the astrolabe, also of the armillary sphere, which…
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astronomy
SN 1987A – The Best Studied Supernova of All Time

SN 1987A – The Best Studied Supernova of All Time

Tabea Tietz
On February 24, 1987, SN 1987A, a supernova in the outskirts of the Tarantula Nebula in the Large Magellanic Cloud occurred visible to the naked eye. It was the closest observed supernova since Kepler’s Supernova  SN 1604, which occurred in the Milky Way itself.[5] SN 1987A – The Best Studied Supernova of all Time Due to the relative proximity to Earth, SN 1987A became one of the best studied supernovae of all…
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astronomy
John Dreyer and the New General Catalogue of Nebulae and Clusters

John Dreyer and the New General Catalogue of Nebulae and Clusters

Tabea Tietz
On February 13, 1852, Danish-Irish astronomer John Louis Emil Dreyer was born. Dreyer’s major contribution was the monumental New General Catalogue of Nebulae and Clusters of Stars (based on William Herschels Catalogue of Nebulae)[5], the catalogue numbers of which are still in use today. Education and Assistant to Lord Rosse John Louis Emil Dreyer was born in Copenhagen, Denmark, the son of Lieutenant General John Christopher Dreyer, back then the Danish Minister for…
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astronomy
Pierre Gassendi and his Trials to reconcile Epicurean Atomism with Christianity

Pierre Gassendi and his Trials to reconcile Epicurean Atomism with Christianity

Harald Sack
You have read the title? I guess, you might be scared now, but Pierre Gassendi was a decent fellow… On January 22, 1592, French philosopher, priest, scientist, astronomer, and mathematician. Pierre Gassendi was born. Gassendi revived Epicureanism as a substitute for Aristotelianism, attempting in the process to reconcile Atomism‘s mechanistic explanation of nature with Christian belief in immortality, free will, an infinite God, and creation.He clashed with his contemporary Descartes on the possibility…
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astronomy
Asaph Hall and the Discovery of Phobos and Deimos

Asaph Hall and the Discovery of Phobos and Deimos

Tabea Tietz
On October 15, 1829, American astronomer Asaph Hall III was born, who is most famous for having discovered the moons of Mars, Deimos and Phobos, in 1877. He determined the orbits of satellites of other planets and of double stars, the rotation of Saturn, and the mass of Mars. “The deepest truths require still deeper truths to explain them.” – Asaph Hall Asaph Hall – Early Years Asaph Hall was born in…
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philosophy
Johann Valentin Andreae and the Legend of the Rosicrucians

Johann Valentin Andreae and the Legend of the Rosicrucians

Harald Sack
On August 17, 1586, German theologian and author Johannes Valentinus Andreae  was born. He claimed to be the author of the Chymische Hochzeit Christiani Rosencreutz anno 1459 (1616, Strasbourg, the Chymical Wedding of Christian Rosenkreutz), one of the three founding works of Rosicrucianism, a philosophical secret society said to have been founded in late medieval Germany by Christian Rosenkreutz. Rosicrucianism holds a doctrine or theology “built on esoteric truths of the ancient past“,…
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geology
Giovanni Alfonso Borelli and the Science of Biomechanics

Giovanni Alfonso Borelli and the Science of Biomechanics

Harald Sack
On January 28, 1608, Renaissance Italian physiologist, physicist, and mathematician Giovanni Alfonso Borelli was born. Trained in mathematics, Borelli also made extensive studies of Jupiter’s moons, the mechanics of animal locomotion and, in microscopy, of the constituents of blood. He also used microscopy to investigate the stomatal movement of plants, and undertook studies in medicine and geology. “No sensible person will deny that the works of Nature are in the highest degree…
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mathematics
Henry Briggs and the Popularization on Logarithms

Henry Briggs and the Popularization on Logarithms

Tabea Tietz
On January 26, 1630, English mathematician and committed puritan Henry Briggs passed away. He is notable for changing the original logarithms invented by John Napier into common (base 10) logarithms, which are sometimes known as Briggsian logarithms in his honour. Henry Briggs’ Education Henry Briggs was born in Halifax, however, his exact date of birth remains unknown. His early family life is also not too well known, but it is believed that…
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