https://padlet.com/gnomeman6664/c042wvbznsag2vfc en-us 2023-08-13 15:11:47 UTC 2023-08-13 23:15:09 UTC hello@padlet.com gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660989918
Proposed an alternate cosmology (arrangement of the universe): a heliocentric model of the Solar System, placing the Sun, not the Earth, at the center of the known universe. Also wrote On the Sizes and Distances of the Sun and Moon and used trigonometry to estimate the size of the Moon and its distance by the Earth's shadow during a lunar eclipse.]]> 2023-08-13 21:31:09 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660989918 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660990171 Prepared the first true star catalogue (used later by Hipparchus to compare the recorded positions from his own measurements)]]> 2023-08-13 21:32:59 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660990171 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660991104 Calculated the diameter of the earth by measuring noontime shadows at sites 800 km apart. Assuming the earth is a sphere, the measured angle between the sites is seven degrees and the circumference is about 50 times 800 km, or about 40,000 km.]]> 2023-08-13 21:36:11 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660991104 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660992933 Introduced two new mechanisms that allowed a planet to vary its distance and speed: the eccentric deferent and the deferent and epicycle. Also probably first invented the terms 'parabola' and 'hyperbola,' curves formed when a plane intersects a conic section, and 'ellipse,' a closed curve formed when a plane intersects a cone.]]> 2023-08-13 21:46:51 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660992933 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660994278 Wrote On the Ascension of Stars. In this work he is the first to divide the Zodiac into 360 parts.]]> 2023-08-13 21:53:36 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660994278 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660995636 Built off existing Babylonian astronomical writings and used them to create better geometrical models of the sun and moon. Also measured the year with great accuracy and built the first comprehensive star chart with 850 stars and a luminosity, or brightness, scale. He is credited with the discovery of the precision of the equinoxes by Ptolemy. ]]> 2023-08-13 22:02:47 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660995636 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660998027 Designed a calendar of 365.25 days which was introduced by Julius Caesar. Also credited with developing models of the orbit of Mercury.]]> 2023-08-13 22:16:13 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2660998027 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661001872 Death of Alexander the Great, beginning of The Hellenistic Period. ]]> 2023-08-13 22:36:01 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661001872 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002057 Seleucos conquers Babylon and founds the Seleucid dynasty.]]> 2023-08-13 22:37:00 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002057 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002278 Life of Archimedes, physician, mathematician and engineer.]]> 2023-08-13 22:38:20 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002278 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002988 Rome defeats the Celts in Italy. Rome's dominance in central Italy is secured.]]> 2023-08-13 22:41:25 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661002988 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661004407 Eumenes rebels and wins against the Seleucid Antiochus I. Beginning of the Pergamon Empire.]]> 2023-08-13 22:48:16 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661004407 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661004990 Former satrap Diodotos rebels against Seleucid king Antiochos I, creating the Greco-Bactrian kingdom.]]> 2023-08-13 22:49:52 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661004990 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005083 First appearance of multiple Euthydemid kings at the same time. Beginning of the Indo-Greek kingdoms.]]> 2023-08-13 22:50:27 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005083 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005520 Rome sacks Corinth and dissolves the Achaean league. Greece is ruled by Rome]]> 2023-08-13 22:52:04 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005520 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005752 Attalus III, the last king of Pergamon, bequeathes the whole of Pergamon to Rome.]]> 2023-08-13 22:53:07 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005752 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005854 Tigranes II invades and destroys the Seleucid Empire.]]> 2023-08-13 22:53:42 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661005854 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006043 Julius Caesar's conquest of Gaul.]]> 2023-08-13 22:54:21 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006043 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006138 Herod the Great is installed as King of Judaea. Rebuilding of the Temple of Jerusalem.]]> 2023-08-13 22:54:51 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006138 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006374 The death of Cleopatra VII by poison, the last ruler of Ptolemaic Egypt. The end of the Hellenistic period. ]]> 2023-08-13 22:56:12 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661006374 gnomeman6664 https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661010593 On his pursuit of Pompey into Egypt, Caesar was cut off by a large fleet of Egyptian boats in the harbor of Alexandria. He ordered the boats to be burned. The fleet was destroyed, but the flames spread to the city and the great library.]]> 2023-08-13 23:14:23 UTC https://padlet.com/gnomeman6664/c042wvbznsag2vfc/wish/2661010593