Instruments and methods used in radiometry - II (1913)
National Bureau of Standards · leaf 37
e. The rear side of each bolometer strip is left bright, and the frontside is painted with a mixture of equal parts of lampblack and ofplatinum black, which is made into a smooth, thick, paste withturpentine, or with a dilute alcoholic solution of shellac. This isapplied with a brush made of a thin… … Cobientz] Instruments and Methods of Radiometry 41 the other end, there is no danger of tearing the strip. After this,the bolometer is blackened a little more by smoking over a candleflame. Chemically precipitated platinum black should be usedinstead of the powdered electrolytic material because it…
Measurements and use of instruments · Thermometry, pyrometry and calorimetry · Heat flow, thermal and thermodynamic processes
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