Inventors at work, with chapters on discovery (1906)
Iles, George, 1852-1942 · New York, Doubleday, Page & company · leaf 120
highreaches of both science and art. The propertiesof the glass, of course, count for most in pro-ducing combinations free from color for tele-scopes, microscopes, and cameras. Jena glass, described in an-other chapter of this book, with its extraordinary range of re-fractive and dispersive… … Zeiss binocular glasses:longitudinal and cross-sections. astonishing that a lens forty-two inches wide can be so truly curved as to focus the image of a star as an immeasurable dot. Let us look at some of the instruments designed by a master for shaping glass discs into lenses. Some of the best…
Inventions · Inventors
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