Famous american dating website - 10+ Celebrities You Probably Forgot Have Famous Parents.


List of Native American women of the United States ... being Native American is defined as being enrolled in a ... Cherokee-descent subject of the famous photograph ...

Copernicus discovered the mathematically yet unproven heliocentric solar system. In his treatise, 'On the Revolutions of the Celestial Spheres' he postulated that the planets, including the earth, revolve around the sun, and that the earth revolved around its axis once every day. The work had a hostile reception when it was published (1543), as it challenged the ancient teaching of the Earth as the centre of the universe. In the 1600' Galileo and Kepler began to develop the physics that would prove Copernicus right. 1493-1541 Phillippus Aureolus Paracelsus (Theophrastus Bombast von Hohemheim) - Swiss physician; controversial figure in medicine and alchemy; promoted the production of chemical medicines for illnesses of the human body; saw the human body as a chemical system monitored by spiritual alchemists; developed many medical remedies; developed theoretical chemistry through sets of metal experiments which produced salt solutions; added salt to mercury and sulphur as components of metals. 1494-1555 Georg Bauer - "Agricola" - German educator, city official, and physician Georgius Agricola (Latinized for of George Bauer) is best known as the author of De re metallica (1556), a treatise on mining and metallurgy. The treatise was translated into English in 1912 by future . president Herbert Hoover and his wife, Lou Henry Hoover. Agricola studied medicine at Leipzig University. He became a devoted follower of Erasmus, who wrote a foreward to Agricola's first book on mining and metallurgy (1930). While town physician of Joachimsthal (now Jachymov, Czech Republic), he became intensely interested in all aspects of the mining and metallurgy industry by which the town thrived and began a 25-year study of the subject, which culminated in hos posthumously published masterpiece. The 12-chapter treatise included 292 woodcult illustrations carfully executed by Blasius Weffring. Agricola also wrote a number of works on medicine, geology, mineralogy, politics, and economics. 1514-1564 Andreas Vesalius 1540-1603 William Gilbert - Some say (1544-1603) - English physician; known for his early studies on electricity and magnetism. His De magnete (1600) propounded the theory that the earth was a giant lodestone with north and south magnetic poles. His theory that the earth exerted a magnetic influence throughout the solar system was a precursor to the modern conception of gravity as an attracting force between masses. Gilbert was among the first to divide substances into electrics (spar, glass, amber) and nonelectrics. -1616 Andreas Libau - "Libavius" 1561-1626 Francis Bacon - English philosopher and scientist; introduced the idea that an understanding of the natural world could be gained from direct observation and experimentation. 1564-1642 Galileo Galilei 1579-1644 Johann Baptista van Helmont - Flemish chemist; first to distinguish chemically produced gases; processes studied included combustion and fermentation; coined the term "gas". 1592-1655 Pierre Gassendi 1596-1650 Rene Descartes - French mathematician and philosopher; developed atomic theory through explanations of properties of matter. 1602-1686 Otto von Guericke 1604-1668 Johann Rudolf Glauber 1608-1647 Evangelista Torricelli - Italian physicist and mathematician; invented the barometer (1643). 1614-1672 Franz De le Boe (Latin name, Franciscus Sylvius; also, Francois Du Bois) - German physician, anatomist and chemist; based diagnoses and treatment of patients on blood acids, alkali and salts. 1620-1682 Jean Picard - French scientist; observed the luminous glow in the Torricellian vacuum of a barometer produced by motion of the mercury wen the untstrument was carried from place to place. 1623-1662 Blaise Pascal - French mathematician and scientist for whom the SI unit of pressure (Pascal) was named. 1627-1691 Robert Boyle - English physicist and chemist; experimented in pneumatics; through research, he rejected the accepted definition of matter; proposed Boyle's Law (1662). ?-1692 Hennig Brand 1630-1684 Edme Mariotte 1635-1682 Johann Joachim Becher 1642-1727 Issac Newton - English mathematician and scientist; developed theory of matter; first to demonstrate the color components of white light with a prism and the reconstruction of these colors into white light with a second prism; researched the optical characteristics of chemical substances; studied gravitation and motion; developed the law of gravitation. 1644-1710 Ole Christensen Roemer - Denmark; was the first to show that the velocity of light is finite. His conclusion was based on the variations of the time intervals between consecutive eclipses of one of the moons of Jupiter during the course of the revolution of the earth around the sun. -1715 Thomas Savery 1656-1743 Edmund Halley - English astronomer; discovered the proper motion of stars and the periodicity of comets. His activities also ranged from the studying of archaeology to serving as deputy comptroller of the mint at Chester. He was a very important part of the English scientific community at the height of its activity. A graduate of Oxford, he became a member of the Royal Society at the age of twenty two. In 1676 to 1678 from the island of Saint Helena, he cataloged the positions of about 350 Southern Hemisphere stars and observed a transit of Mercury. He worked out a theory of cometary orbits and concluded that the comet of 1682, otherwise known as Halley's comet, was periodic and correctly predicted that it would return in 76 years. In 1710, he compared current star positions with those listed in Ptolemy's catalog, he determined that the stars must have a slight motion of their own. Halley was appointed Savilian professor of geometry at Oxford in 1704, and in 1720 he succeeded John Flamsteed as astronomer royal. At the Greenwich Observatory he used the first transit intrucment and devised a method for determining longitude at sea by means of lunar observations.


Famous american dating website

Famous american dating website