Direct Vision Spectroscope
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“...an instrument which gives a spectrum when the source of the light is in a straight line with the eye—that is, which gives dispersion without deviation—is called a direct vision spectroscope...” —Whitney, 1889
Keywords
prism, rays, reflection, spectrum, scope, spectroscope, prisms, rays of light, prism train, scopes, direct visionSource
William Dwight Whitney, PhD, LLD The Century Dictionary: An Encyclopedic Lexicon of the English Language (New York, NY: The Century Co., 1895) 5811
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