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~chemical monitoring instrumentation 9:634c 'clay mineral types and structure 4:
700e infrared light, that portion of the electromagnetic spectrum adjacent to the
long wavelength, or red end of the visible light range. Invisible to the eye, ...
Information derived from fringe measurements is used for precise wavelength
determinations, measurement of very small distances and thicknesses, the stud
of spectrum lines, and determination of re ractive indices of transparent materials.
Each element in clouds of interstellar gas can absorb light of particular
wavelengths, produc— ing dark absorption lines in the spectrum of starlight
passing through. Larger particles of interstellar dust absorb light and scatter it.
Blue light is ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review