LIGHT (CLASSIC REPRINT)

Excerpt from LightIf the candle, so shining, is supposed to be at the surface of the earth, or upon any horizontal plane, and there is nothing to intercept its rays upward or on any side, then it is plain that the space which the rays illuminate will be of the form of a hemisphere, with a radius equal to the dis tance through the air to which the light could penetrate. The base of the hemisphere would coincide with the ground, or the horizontal plane, whatever it might be, on which the candle was placed, while the Spherical surface of it would extend into the air, forming a great dome over and around the candle, like a kind of lower Sky.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works._,