The Distribution of Energy in the Spectrum of the Acetylene Flame

George Walter Stewart
1901 Physical Review  
published work on the distribution of energy in flame spectra is not very extensive, and some of it is difficult to find, occurring merely as a minor part of a problem considered. As might be expected, the methods and apparatus of the different investigators are quite similar. Lens and mirror spectrometers and also gratings have been used for the production of spectra, and linear thermopiles and bolometers for the measurement of the radiant heat. Tyndall 1 explored the spectra of illuminating
more » ... a of illuminating gas and hydrogen flames. He moved a thermopile backward and forward in the spectrum of each flame, and determined the point of maximum intensity, which was found to be farther toward the long wave-lengths with the hydrogen than with the gas flame. Magnus, 2 while working upon the radiation of platinum, found the distribution of energy in the spectrum of a bunsen flame, but his results are not in accord with those of subsequent observers. Langley 3 found the distribution of energy in the flame of illuminating gas, and, from the curve, calculated the radiant efficiency to be 0.024. In a later article 4 he mentions the fact of having also investigated the candle flame, but gives neither curves nor data. Julius 5 obtained the spec-
doi:10.1103/physrevseriesi.13.257 fatcat:tycfz7ahgvazbn3mop2e5ytoei