Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
pearance of relief, as seen in the stereoscope, and by means of whichseveral persons can view these effects at the same time. 280 OPTICS. If an object, T, be placed before a large double convex lens, L, animage of the object will be formed at the conjugate focus, which maybe received on a plate of…
Physics · Astronomy
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