| 单词 | achromatic lens |
| 例句 | It is fitted with the No. 0 Ball Bearing shutter, speed 1/50 of a second, with cable release, as described on page 6, and offers the choice of rapid rectilinear or meniscus achromatic lens. Kodaks and Kodak Supplies 1914 If not, the substitution of an achromatic lens will be of no advantage. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" Photographic Query.—Given the diameter and focal length of a simple achromatic lens; at what distance from it must a diaphragm of given diameter be placed to give the best possible image? Notes and Queries, Number 235, April 29, 1854 A Medium of Inter-communication for Literary Men, Artists, Antiquaries, Genealogists, etc. If the web of a frog's foot be placed on the stage of a microscope and examined with an achromatic lens, the chromatophores can readily be made out. The Dawn of Reason or, Mental Traits in the Lower Animals The two spectra do not coincide, and the result, if an achromatic lens be made of these glasses, must be a remnant of color which cannot be neutralized. Scientific American Supplement, No. 561, October 2, 1886 For average photography, the camera fitted with Kodak Ball Bearing shutter and tested meniscus achromatic lens is amply efficient, for it will make excellent pictures under ordinary conditions. Kodaks and Kodak Supplies 1914 A similar argument may be applied to find at what point an achromatic lens becomes sensibly superior to a single one. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" It was this accuracy of convergence of the light which led Dr. Draper to prefer the mirror to the achromatic lens. The Atlantic Monthly, Volume 12, No. 69, July, 1863 The eye-piece consists of a single achromatic lens, whose focal length is about two inches. Experimental Determination of the Velocity of Light Made at the U.S. Naval Academy, Annapolis One is painted with the most brilliant hues of Romanticism, and glows with the essence of the Romantic spirit--Aspiration; the other looks at life through an achromatic lens, and is a catalogue of Realities. Essays on Russian Novelists Calculation shows that, if the aperture be 1⁄5 in., an achromatic lens has no sensible advantage if the focal length be greater than about 11 in. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus" |
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