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Science of the Greeks
FROM B. C. 639 TO A. D. 200.
The dates of this table refer to the years in which each particular step in advance was made; B.C. but up to the end of the Astronomy. 600. Thales marks out solstices and equinoxes. 570. Anaximander-The sundial; the phases of the moves; morning and even- Middle Ages they must be regarded as merely approximative. Physics and Mechanics.
Chemistry, Physical Geography and Geology.
Greeks knew how to extract iron, Anaximander makes a map of the known world. moon. mercury, and other 500. Pythagoras-The earth 500. 500. Pythagoras invents metals from 500. the the ore; ing star the same. the Monoand make chord. colors out of earths. 450. Anaxagoras-Nature of sun and moon; eclipses; movements of the planets. 400. Democritus on Milky Way. 360. Eudoxus on movements of the planets. 357. Aristotle on occultation of Mars; asserts that the earth is round. 260. Euclid on light travelling in straight lines.
Ecliptic and Zodiac under- 250. stood by the Greeks.
Aristarchus-Earth moves round the sun; obliquity of ecliptic; rotation of earth on its axis. des on the Archimelever; Hiero's crown and specific gravity; screw of.
Archimedes. 130. Hipparchus on precession of the equinoxes; cal- 120. Hero's culates eclipses.
A. D. 100-170. Ptolemy founds the Ptolemaic system. engine.
Biology.
Pythagoras 390. Hippocrates, on changes of father of mediland and sea; on earthquakes, volcanoes, and petrifying springs. 230. Eratosthecine; separates medicine from the priesthood. 341. Aristotle, founder of zoology; studies the nature of plants and animals. nes lays down 340. Theophrasfirst parallel of tus, first botanist, latitude; mea- Erasistratus and sures circumference of the earth; studies mountain chains. on Herophilus, the first anatomists; they study brain, muscles, and nerves. nerves and arteries; works out A. D. 100 - 170. Α. D. 160. Galen, Ptolemy geography.
Strabo on earthquakes and volcanoes, p. 33.
Pliny on natural physician, studies a theory of medicine. history