Light Propagation: Greek Erathostene (3rd century BC) calculated the radius of the earth using the shade of the sun on the day of the summer solstice. Anonymous illustration from 1925. Private collection.(Light Propagation: Greek Eratosthenes (3rd century BC) calculated the radius of the earth using the shadow of the sun on the day of the summer solstice)Anonymous Anonymous |
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Udatert · Engraving
· Bilde ID: 925409
Private Collection / Bridgeman Images |
0 Vurderinger |