Anaximander

Anaximander, an Ionian philosopher, bcrn at Miletus about 610 B.C. According to Aristotle he conceived the physical substratum of things to be a chaotic mixture of elements out of which the definite and individual forms were evolved by mechanical processes. His astronomical theories and observations are interesting. He discovered the obliquity of the ecliptic; taught that the moon shone with light borrowed from the sun; believed in the cylindrical form of the earth; and invented charts and sundials. He died about 547 B.C.