, a property inherent in light, by which, according to the various sizes of its parts, or from some other cause, it excites different vibrations in the optic nerve; which, propagated to the sensorium, affect the mind with different sensations. See the doctrine of colours fully explained under Chromatics. See also Optics, Achromatic, and Telescope.
COLUMBA Noachi, Noah's Dove, a small constellation in the southern hemisphere, consisting of 10 stars.
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Entry taken from A Mathematical and Philosophical Dictionary, by Charles Hutton, 1796.
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