Wright, Mark R., 1854- · London : Longmans · leaf 106
Fig. 70. is in front, a is called the optical image of a. Usually onlya section of the mirror is shown, as in fig. 71. … Fig. 71. Fig. 72. To draw the image of an object ab.— All bodies are madeup of points, and the image will be the image of an assemblageof points. The image of a (fig. 72) is first obtained (Da=DA),then the image of b : the images of intermediate points will liebetween a and A It is also plain, that…
Physics
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