Quartz Tungsten Halogen (QTH) lamps are proven visible and near infrared sources, thanks to their smooth spectral curve and stable output. They generate little ultraviolet radiation and do not exhibit ...
IN NATURE, vol. xxv. p. 347, is a description of the spectrum of carbon as found by Professors Liveing and Dewar in a Swan lamp rendered incandescent in the ordinary way. Finding one of these lamps ...
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