Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 304
A A A is flint glass,B is crown glass.They unite toform an achro-matic lens. … 1, C, F, prism crown glass.C, D, F, prism flint glass,more dispersive than crownglass. The beam S emergesas E, but little decomposed.Were A, B, F a prism ofone kind of glass, E would bemuch decomposed. ture of an eyeball, are used in all good telescopes, microscopes,and cameras, and are now…
Inventions · Inventors
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