alethoscope
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English
Etymology
From Ancient Greek ἀλήθεια (alḗtheia, “truth”) + -scope, equivalent to aletho- + -scope.
Noun
alethoscope (plural alethoscopes)
- (historical) An instrument, invented in the 1860s, for viewing magnified pictures by means of a single lens inside a box. By varying the intensity of the light, the same picture can be shown as "daytime" or "nighttime".
Derived terms
References
- “alethoscope”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.