Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 248
ffect. In a somewhat denseratmosphere, lamps of higher candlepowerare most effective, whereas in a clearatmosphere greater legibility is obtainedwith the lower candlepower. From thediagram it would appear that in generalan advance from 10 watt to 75 wattlamps does not lead to an… … The photograph reproduced above wasrecently taken at the Croydon Aerodromeon the occasion of a demonstration byMajor J. P. Ashley Waller of a new typeof projector which is being experimentedwith with the object of producingeffective illumination of the landing area.The photograph was taken entirely…
Lighting
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