Computation of the Effective Intensity of Flashing Lights

Dec 01, 1957

It is generally recognized that when a light signal consists of separate flashes, the instantaneous intensity during the flashes must be greater than the intensity of a steady light in order to obtain threshold visibility. This paper discusses several computations for the visual range of a flashing light and was prepared as part of the work in the development of aviation ground lighting.

Charles A. Douglas
Presented at: 
Annual Convention of the Illuminating Engineering Society
Published & professionally reviewed by: 
Illuminating Engineering Society (IES)

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