Abstract
THE long duration of the luminosity (afterglow) of flame gases after the explosion of a well-mixed inflammable gaseous mixture contained in a large closed vessel, in which cooling takes place slowly1, suggests that were it possible to secure steady streamlined flow of the flame gases rising from a very large open flame, thus eliminating cooling due to turbulence, they would appear as a column of luminous gas many feet in height. Experimenting recently, we have been a little surprised to find how far we may go in this direction with a small Bunsen flame resulting from the combustion of fully aerated coal-gas. It is easily possible to obtain a column of luminous gas which, viewed in a dark room, extends to a height of 2 ft., whereas with the ordinary Bunsen flame luminosity ceases at a height of only 7 or 8 in.
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References
Nature, 159, 407 (1947).
Gawthrop, Rev. Sci. Instr., 2, 522 (1931).
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LEAH, A., DAVID, W. A Bunsen Flame as a Column of Luminous Gas. Nature 161, 524 (1948). https://doi.org/10.1038/161524a0
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DOI: https://doi.org/10.1038/161524a0
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