The emissivity of metals and oxides. I. Nickel Oxide (NiO) in the range 600° to 1300° C (1914)
National Bureau of Standards · leaf 8
6-838. 68976°—14 4 46 Bulletin of the Bureau of Standards [Vol. n Fig. 2 illustrates the optical arrangement used with a spectro-photometer of the Lummer-Brodhun type. It was found neces-sary on account of stray light to replace the Iyummer-Brodhuncube by a silver-strip cube. The field of view thus… … Fig. 2.—Spectrophotometer method light was about 40 m/x in the red and 20 nip in the violet. Inmaking a series of observations the wedge was usually replaced bya source of light of approximately equal intensity in the directionAC and AD. The collimator slits were then adjusted until amatch was…
Rays and radiation · Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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