An elementary course of natural and experimental philosophy .. (1856)
Tate, Thomas, 1807-1888 · Boston, Hickling, Swan and Brown · leaf 158
Fig. 37. Convex lenses are called MAGNIFYING GLASSES, becausethey thus increase the apparent size of objects viewed throughthem. 24. Concave lenses. — These lenses diminish the apparentsize of objects; hence they are called DIMINISHING GLASSES, An object N S, (see Fig. 38,)viewed from the point f,… … Fig. 38. 25. Distortion of images produced by spherical aberra-tion. — The images of objects produced by spherical lensesand mirrors are only true for the rays which lie near to theaxes. The rays which fall at a distance from the axes pro-duce distortions in the images, which have been called…
Physics
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