Lectionary Calendar
Tuesday, April 8th, 2025
the Fifth Week of Lent
the Fifth Week of Lent
There are 12 days til Easter!
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Dioptrics
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(n.) 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.
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These files are public domain.
Text Courtesy of BibleSupport.com. Used by Permission.
Bibliography Information
Webster, Noah. Entry for 'Dioptrics'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/dioptrics.html. 1828.
Webster, Noah. Entry for 'Dioptrics'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​d/dioptrics.html. 1828.