Lynde, Carleton John, b. 1872 · New York, Macmillan · leaf 280
FIG. 196. — The simple microscope. between an object and the eye, it enables the eye to see an en-larged erect image of the object. The object must be held at 266 PHYSICS OF THE HOUSEHOLD a distance equal to or less than the focal length of the lens.Such an object is represented by the arrow PQ in…
Physics · Home Economics
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