Mattison, Hiram, 1811-1868 · New York, Huntington and Savage, Mason and Law · leaf 19
, in an eclipse, is convex; which shows theearth, from which the shadow is projected, to be convex also. [1. It is not pretended that this reasoning is altogether logical and conclusive, forany circular object, like a common plate, will cast a convex shadow, if held in a cer-tain position. Still,… … * Ho-Rl-ZON. PEIMAEY ASTEONOMY. 13
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
