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Karl Wilhelm Andreas Strehl (April 30, 1864 – June 14, 1940) was a German
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Karl Wilhelm Andreas Strehl (April 30, 1864 – June 14, 1940) was a German physicist
A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
, mathematician, and writer. He is notable for the Strehl ratio
The Strehl ratio is a measure of the quality of optical image formation, originally proposed by Karl Strehl, after whom the term is named. Used variously in situations where optical resolution is compromised due to lens aberrations or due to ima ...
, a widely used measurement for the optical quality of an imaging system.Strehl, K. 1902, ''Über Luftschlieren und Zonenfehler'', Zeitschrift für Instrumentenkunde, 22 (July), 213–217[PDF file]
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See also
*Strehl ratio
The Strehl ratio is a measure of the quality of optical image formation, originally proposed by Karl Strehl, after whom the term is named. Used variously in situations where optical resolution is compromised due to lens aberrations or due to ima ...
References
1864 births 1940 deaths 20th-century German physicists German male writers 19th-century German mathematicians 20th-century German mathematicians 19th-century German physicists {{Germany-physicist-stub