Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 239
ght production, we get the striking 224 Herbert E. Ives. [J. F. I. result that the total luminous efficiency of light production by thefire-fly (glowworm) is po per cent. Exception may be taken to the assumptions made in arrivingat this figure, and it cannot claim to be more than a… … .45 .50 .55 .60 .65 Luminous efficiencies of spectral radiations. lOn sources, for even if the figure is ofif by a factor of 3 or 4, or even10, the efficiency would still be many times the 4 or 5 per cent.,which is about the best we now accomplish artificially. High total luminous efficiency…
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