Heat energy and fuels: pyrometry, combustion, analysis of fuels and manufacture of charcoal, coke and fuel gases. Translated by Oskar Nagel (1908)
Jüptner von Jonstorff, Hanns, Freiherr, 1853- · New York McGraw · leaf 79
he naked eye. (6) The optical pyrometer of Mesure and Nouel (Figs. 14, 15)can be obtained from E. Ducretet in Paris. The direct observation of the glow-colors is rather difficultsince it depends on individual qualification and momentary dis-position. The eye can never determine the color shades… … c O^ Figs. 14 and 15. — I-unette P_vrom6trique (PjToscope). that the result of such observation varies according to observer,light and time of observation. TABLE XV. TEMPERATURES CORRESPONDING TO GLOW COLORS. Pouillet. Howe. White and Taylor. Heat Color. Deg.Cent. Heat Color. Deg.Cent. 470 475 550…
Fuel · Heat
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