Instruments and methods used in radiometry - II (1913)
National Bureau of Standards · leaf 21
is an optimum length, which is of the order of 2 mm,but the exact value was not determined. Obviously, two receiv-ing surfaces 4 mm wide are better than a single one 9 mm widein the ratio 4.2 to 2.7. In fact, the sensitivity should be stillgreater than this (if a galvanometer having a resistance of… … SQUARE ROOT OF AREA OF RECEIVERFig. 5 to 6 mm wide give ample working space in mounting, so that thereis a distinct gain in using such narrow widths. Xo difference could be detected in the sensitivity of the frontand the rear surfaces of these junctions, showing that attachingthe junction at the…
Measurements and use of instruments · Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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