Studies of instruments for measuring radiant energy in absolute value: An absolute thermobile (1916)
National Bureau of Standards · leaf 13
BlackBody … —30mm s+e- IZ -***-/5 Vert re* i~ SscTt o n Fig. 4.—Water-cooled shutter and diaphragms (receiver No. 4), series XXXVII to XLVI, it appears that thesize of the opening used did not affect the numerical value of theresults, which have a range in variation of about 1 per cent. Coblentz 1»J Emerson]…
Measurements and use of instruments · Rays and radiation · Heat flow, thermal and thermodynamic processes
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