A natural philosophy : embracing the most recent discoveries in the various branches of physics, and exhibiting the application of scientific principles in everyday life .. (1899)
Quackenbos, G. P. (George Payn), 1826-1881 · New York, Cincinnati [etc.], American book company · leaf 244
observer on the other. I is not visible to a person at Rlooking directly at it, on account of the interposition of the screen; but, asthe angle of reflection is always equal to the angle of incidence, it can beseen from R by looking at the mirror. 611. Images.—By the Image of an object is meant… … Fig. 235 illustrates the formation of an image. R B represents a soldierwith a red coat and blue trowsers standing in strong sunlight oppositethe white wall W. Let the shutters S S be thrown open, and not only thelight reflected from the person of the soldier, but also other rays, enter…
Physics
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