A practical treatise on the use of the microscope, including the different methods of preparing and examining animal, vegetable, and mineral structures (1848)
Quekett, John, 1815-1861 · London, H. Bailliere · leaf 184
ight into a variety of colours;this effect is represented by fig. 102, L L, &c., are parallel rays of light falling upon a plano-convex lens; two of these,one from the margin, theother from nearer the centre,are shown as dispersed andcoloured, as in the spec-trum formed by a prism;these… … Fijr. 102. 144 PRACTICAL TREATISE ON THE MICROSCOPE. The lenticular form of the glass does not of itself decomposethe light, but whenever a ray passes from one medium intoanother more or less refractive, the dispersion is certain totake place. As every lens, according to its figure, is more orless…
Microscopy
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