Abstract
IT is a striking fact that solid (or massive) carbon behaves as a black body, whereas small carbon particles which are responsible for the luminosity of hydrocarbon flames have an absorption coefficient which is strongly dependent on wave-length. This difference is important in the measurement of the colour temperature of luminous flames. It has been shown theoretically by Mie1 that the, absorption coefficient is strongly dependent on wave-length when particles are smaller than a wave-length, an effect which is analogous though not identical with the dependency of scattered light on wave-length.
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References
Mie, Ann. d. Phys., 25, 377 (1908).
Shechter, Roginsky and Sakharova, Acta Physicochim. U.R.S.S., 21, 3, 463 (1946).
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WOLFHARD, H., PARKER, W. Emissivity of Small Particles in Flames. Nature 162, 259 (1948). https://doi.org/10.1038/162259b0
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DOI: https://doi.org/10.1038/162259b0
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