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diopter
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The answer DIOPTER has 3 possible clue(s) in existing crosswords.
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The word DIOPTER is VALID in some board games. Check DIOPTER in word games in Scrabble, Words With Friends, see scores, anagrams etc.
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Definitions of diopter in various dictionaries:
noun - a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters
D.
adj - a measure of refractive power [n -S] : DIOPTRAL
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| Possible Crossword Clues |
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| Eyeglass prescription measurement |
| Unit of refractive power of a lens |
| Last Seen in these Crosswords & Puzzles |
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| Mar 4 2010 USA Today |
| Aug 24 2003 New York Times |
| Oct 14 1998 New York Times |
| Possible Dictionary Clues |
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| A unit of measurement of the refractive power of lenses equal to the reciprocal of the focal length measured in meters. |
| a unit of refractive power, which is equal to the reciprocal of the focal length (in metres) of a given lens. |
| a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters |
| A unit of refractive power, which is equal to the reciprocal of the focal length (in metres) of a given lens. |
| Diopter might refer to |
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A Dioptre (British spelling) or diopter (American spelling) is a unit of measurement of the optical power of a lens or curved mirror, which is equal to the reciprocal of the focal length measured in metres. (1 dioptre = 1 m1.) It is thus a unit of reciprocal length. For example, a 3-dioptre lens brings parallel rays of light to focus at 13 metre. A flat window has an optical power of zero dioptres, and does not cause light to converge or diverge. * Dioptres are also sometimes used for other reciprocals of distance, particularly radii of curvature and the vergence of optical beams. The usage was proposed by French ophthalmologist Ferdinand Monoyer in 1872, based on earlier use of the term dioptrice by Johannes Kepler.The main benefit of using optical power rather than focal length is that the lensmaker's equation has the object distance, image distance, and focal length all as reciprocals. A further benefit is that when relatively thin lenses are placed close together their powers approxi |