Laboratory exercises in physics for secondary schools (1906)
Twiss, George Ransom, b. 1863 · Chicago, Scott, Foresman and company · leaf 217
the plate.Place the eye oppo-site this pin and onthe level of the page. Now look through the glassat the pin. Note the position of the eye at whichthe image of the pin seen through the glass coincideswith the pin itself as seen above the glass. What isthe direction of the line from the pin to the… … Fig. 41.— Illustrating the operations ofExercise 54. 196 LABORATORY EXERCISES IN PHYSICS (c?) Stick a pin, av against the glass, and in linewith the eye and the image of the first pin. (0) Near the edge of the page stick a third pin,a3, so as to hide a2 and the image of av See thatthe pins are…
Physics
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