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achromat

Definition of the noun achromat

What does achromat mean as a name of something?

noun - plural: achromats

  1. A lens that imparts little color; a lens that is achromatic.

Printed dictionaries and other books with definitions for achromat

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Google previewObserving and Measuring Visual Double Stars (2012)

by R. W. Argyle

What all of this amounts to in practice is that a reasonably well-made Fraunhofer achromat is a hugely more robust instrument than a typical reflector in the face of the thermal variations, mechanical flexure and shifting collimation which ...

Google previewDiffraction-limited Imaging with Large and Moderate Telescopes (2007)

by Swapan K. Saha

An Achromat is a single lens, in which two or more elements, usually of crown and flint glass, with differing dispersion are bonded together. They have been corrected for chromatic aberration with respect to two selected wavelengths.

Google previewNight Vision (1990)

Basic, Clinical and Applied Aspects by R. F. Hess, K. Nordby, L. T. Sharpe

Thus the achromat is a functional rod monochromat and provides an excellent model of normal rod function where it is most difficult to isolate in the Duplex retina, namely under mesopic and suprathreshold conditions. The data from the ...

Google previewTo Measure the Sky (2010)

An Introduction to Observational Astronomy by Frederick R. Chromey

An achromat is a lens whose focal length is the same at two different wavelengths. The first useful achromats, doublets of crown (convex lens) and flint (concave lens) glass, began to appear in the 1760s in France and England, an appearance ...

Google previewYour Guide to the 2017 Total Solar Eclipse (2016)

by Michael E. Bakich

An achromat is a two-lens system. Apochromats also may use two lenses, but they're more likely to have three or four. The main difference between the two types is the amount of “excess” color you'll see on bright objects. Excess color is not a ...

Google previewHysteroscopy (2007)

Visual Perspectives of Uterine Anatomy, Physiology and Pathology by Michael S. Baggish, Rafael F. Valle, Hubert Guedj

An achromat is a two-lens optical component, color-corrected and generally cemented together. These have been largely replaced by the rod-lens system ( Fig. 9.19). FIGURE 9.16 □ Visible or white light ranges from blue through green and ...

Google previewSurveying Instruments (1982)

by Fritz Deumlich

An achromatic lens system (achromat is a compound lens of one lens each of flint - and crown glass, figure 102) is nearly free of chromatic aberration. It can be completely free of it only for two spectral colours, e.g. for red and blue. For the other ...

Google previewTaber's Cyclopedic Medical Dictionary (2017)

by Donald Venes

achromatous (ā"krö'mā-tūs) [achromat(ic) + -ous] 1. Without color. 2. Deficient in color; lighter than normal. achromia (ä"krö'mē-ă) [a- + chrom+ -ial 1 . Absence of color; pallor. 2. Achromatosis. 3. Condition in which erythrocytes ...

Google previewIllustrated Dictionary of Practical Astronomy (2012)

by C. R. Kitchin

achromat. eyepiece. See Kellner eyepiece. modified. English. mounting . A design of equatorial mounting for a telescope in which a rigid spar is supported on pivots at each end to provide the polar axis. The telescope is mounted to ...

Google previewChildren's Science Encyclopedia (2012)

by A. H. Hashmi

The achromat of two thin lenses is only effective for two particular colours and not for all. The image formed by such an achromat contains some percentage of other colours but the presence of other colours does not affect the quality of the ...

Google previewDictionary of Phhysics

Achromat.

Google previewDictionary of Plant Breeding, Second Edition (2009)

by Rolf H. J. Schlegel

bot achlorophyllous: A plant or leaf without chlorophyll bot achromat: A microscope objective corrected for axial chromatic aberration micr >>> achromatic lens achromatic: Parts of the nucleus not stainable by common chromosome dyes cyto ...

Google previewThe Encyclopaedic Dictionary of Photography (1896)

Containing Over 2000 References and 500 Illustrations by Walter E. Woodbury

There is no occasion for the mere amateur to spend a small fortune on the high- priced apochromats, since almost any first-class achromat of reputable American or English make will do the business as well, even though not especially ...

Google previewMacmillan Dictionary of Astronomy (1985)

by Valerie Illingworth

achromatic lens (achromat). A two- element lens — a doublet – that greatly reduces *chromatic aberration in an optical system. The components, one converging and the other diverging in action, are of ...

Google previewFirefly Astronomy Dictionary (2003)

by John Woodruff

ACHROMATIC LENS (ACHROMAT) -4 active optics The active optics actuators on the reverse of the primary mirror of the WIYN telescope at Kitt Peak National Observatory allow the mirror to be flexed continually to compensate for the effects ...

Google previewPatrick-Turner's Industrial Automation Dictionary (1996)

by Clarence T. Jones, S. Percy Jones

achromat: A compound lens corrected to have the ...

Google previewThe Encyclopaedia Britannica (1911)

A Dictionary of Arts, Sciences, Literature and General Information

Achromat l*60a : 18-400c.

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achromat

Achromat Dog

Photo credit: Adam Freidin

Video about achromat

Achromat Meaning

Video shows what achromat means. A lens that imparts little color, a lens that is achromatic.. Achromat Meaning. How to pronounce, definition audio dictionary.

Scrabble value of A1C3H4R1O1M3A1T1

The value of this 8-letter word is 15 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

Anagrams of ACHROMAT

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