Carhart, Henry S. (Henry Smith), 1844-1920 · Boston : Allyn and Bacon · leaf 255
ly outward in the direction in which the light enters the eye. The eye can giveus information only about the stimulus which reaches it;it furnishes no direct evidence of the source from whichthe stimulus comes, nor of the manner in which it managesto reach it. An image is therefore a point or a… … N Fig. 106. the plane mirror MN, have after reflection the samedirection as if they came from the point A, symmetrically situated with respectto the mirror. In consequence an eye placed atDE will be affected bythese rays as if they camedirectly from A. Thepoint A is accordinglycalled the image of A…
Physics
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