Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 130
ht in the figure, as the arrows themselves ? Is the same answer true of D and its image ? Are the images of A and B longer or shorter than the arrows them-selves ? At the centre of A stand the pin upright, and laying the two rulerson the paper, point one edge of each toward the image of the… … 118 PHYSICS. By the same method locate the image of the pin when erected atthe centre of B and when at the centre of D, asking and answeringin each case the same questions that were asked when the pin was atthe centre of A. If time permits continue the Exercise as follows : Extend the two radii r r…
Physics
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