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Alleged Ultra-violet Rays from Filament Lamps

Nature volume 89, page 377 (1912)Cite this article

Abstract

IN the note referring to the proposed electric lighting in the House of Commons by metal filament lamps, in NATURE of June 6 (p. 352), it is stated that “The present proposal is to use metallic filament lamps enclosed in holophane globes behind ambercoloured glass to cut off completely all ultra-violet rays.” Investigations made in America and in Germany show that the ultra-violet rays from such lamps are insignificant, and are far less than in daylight giving the same illumination, and probably less than with some kinds of incandescent gas mantles.

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  1. A. P. TROTTER
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TROTTER, A. Alleged Ultra-violet Rays from Filament Lamps. Nature 89, 377 (1912). https://doi.org/10.1038/089377a0

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