The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 212
Fig. 9. Aristarchuss Method of Determining the Distance fromTHE Earth to the Sun. To Eratosthenes, 2d century B.C., is due the first measure-ment of the size of the Earth. At noonday, at the summersolstice, the sun shone vertically down a well at Syene, inUpper Egypt, while in Alexandria, at the… … Fig. 1—The Well of Eratosthenes.
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
