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D  ›  dioptrics
D  ›  dioptrics
1828 Definition

DIOPTRICS, n. That part of optics which treats of the refractions of light passing through different mediums, as through air, water or glass.

1913 Definition
Dioptrics (dioptrics)
n.(?)
Di*op"trics
[Gr. (?) (?): cf. F. dioptrique.] (Optics)
  1. The science of the refraction of light; that part of geometrical optics which treats of the laws of the refraction of light in passing from one medium into another, or through different mediums, as air, water, or glass, and esp. through different lenses; -- distinguished from catoptrics, which refers to reflected light.

1828 dictionary
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