Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 120
or placing the image of any point should berecorded when it is found. The final result aimed at in this A B Exercise should be to enable thestudent to tell, without farther ex-periment, in any new case givenhim (Fig. 68, for instance, in whichA B is the line upon which themirror stands), the…
Physics
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