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Abstract

The paper is concerned particularly with the 5 ft. fluorescent lamp which was evolved from the high-voltage fluorescent discharge lamps developed in England before the war. The design of fittings, particularly the diffusing trough, is described as a natural outcome of war-time restrictions and requirements. The results of some experiments to determine the optimum sizes of diffusing fittings are given and multi-lamp fittings are briefly considered. Specular reflectors are discussed to show some of the limitations of design imposed by the size and brightness of the source.

Installations of 5 ft. fluorescent lamps are illustrated to show the trend of modern good practice and some of the more important points are examined. Some possible future applications of the lamps are noted particularly their likely effect on building design in providing artificial daylight.

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References

Electric Discharge Lamps. Francis

V. J.

and Jenkins

H. G.

. Published by General Electric Co., Ltd., England, July, 1941.

Fluorescent Lighting. Jenkins

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. Trans. I.E.S. (Lond.), Vol. 7, No. 2, February, 1942.

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Population Densities and the Heights for Buildings. Beckett

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Fluorescent Lighting Manual, by Amick

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(McGraw-Hill Book Company, Inc.) gives a comprehensive survey or present American practice in using low-pressure fluorescent lamps.

Applications of Low Pressure Fluorescent Lamps

Abstract

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References