Abstract
It is well known that the luminous organs of insects like the fire-fly represent one of the most efficient sources of light, in that almost all the energy is concentrated in a narrow band in that part of the spectrum to which the human eye is most sensitive. In the case of the fire-fly, the spectrum photographed by Mr. Ives1 shows that this band extends from 5230 to 6550 A. FIG. 1.
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References
H. E. Ives, "The Fire-fly as an Illuminant", Journal of the Franklin Institute, vol. 194, p. 213; 1922.
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RAMDAS, L., VENKITESHWARAN, L. Spectrum of Glow-worm. Nature 128, 726–727 (1931). https://doi.org/10.1038/128726b0
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DOI: https://doi.org/10.1038/128726b0
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