Scheiner speed

noun Schei·ner speed \ˈshīnə(r)-\

Definition of Scheiner speed

  1. :  the speed of photographic material based on the exposure required to obtain a just-detectable density and indicated by a system of numbers

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Origin and Etymology of scheiner speed

after Julius Scheiner †1913 German astrophysicist

Seen and Heard

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quaintly unconventional or refined

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