Instruments and methods used in radiometry - II (1913)
National Bureau of Standards · leaf 26
entz] Instruments and Methods of Radiometry 29 Obviously, the sensitivity to be attained depends upon thenumber of units, and this depends upon the skill and patience onehas in constructing such instruments. From the tests made thusfar, there appears to be a small permanent emf (resulting… … -\MSSL 7c Bi- Fig. 7 pile this is obviated by having the two sets of junctions coveredwith receivers which are suspended in air. In Fig. 7 is shown a point source (receiver) thermopile whichis useful in measuring radiation confined in a small circular area.The individual junctions (Fig. 7, a) are…
Measurements and use of instruments · Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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