Treatise on OpticsBlanchard and Lea, 1854 - 418 Seiten |
Inhalt
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Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
absorbed accidental color achromatic angle of incidence aperture axes axis of double beam blue bodies bright centre CHAP common light concave lens converging convex lens crown glass crystals diameter different colors direction dispersive power diverging double refraction equal equation film flint glass focal distance focal length focus fringes green heat Hence Iceland spar inch incident ray inclination index of refraction lenses luminous magnifying power mirror negative object glass observed optical orange parallel rays particles pencil perpendicular phenomena placed plane of polarization plane of reflexion plate of glass polarized light polarizing angle position prism prismatic produced radiant point radius reflected refracted ray refractive power retina rhomb second surface seen shown in fig spectrum speculum sphere spherical aberration suppose system of rings telescope thickness tint tion transmitted transparent tube whence white light yellow
Beliebte Passagen
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Seite 34 - It may also be defined as the sine of the angle of incidence divided by the sine of the angle of refraction, as light passes from air into the substance.
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Seite 99 - ... parts, the orange 27, the yellow 48, the green 60, the blue 60, the indigo 40, and the violet 80...
Seite 6 - Post-Master-General, and Editor of the Turf Register. This edition of Youatt's well-known and standard work on the Management, Diseases, and Treatment of the Horse, has already obtained such a wide circulation throughout the country, that the Publishers need say nothing to attract to it the attention and confidence of all who keep Horses or are interested in their improvement. "In introducing this very neat edition of Youatt's well-known book, on 'The Horse...
Seite 72 - ... very little of the violet. The yellow space, which has not been much absorbed, has increased in breadth. It occupies part of the space formerly covered by the orange on one side, and part of the space formerly covered by the green on the other. Hence it follows, that the blue glass has absorbed...
Seite 7 - It contains a mass of every kind of historical matter of interest, which industry and research could collect. We have derived much entertainment and instruction from the work.