Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 324
ojecting colouredpatterns of varying form and intensityon a screen it should be possible to formsubtle colour harmonies which appealto the eye in much the same way as anintricate musical piece appeals to theear. THE ILLUMINATING ENGINEER (july) 317 SUBMARINE PHOTOGRAPHY BY AIDOF A QUARTZ MERCURY… … ated by a battery of nine 2400 candlepower quartz mercury vapour lamps. * May 29th, 1915. The photographer is lowered to therequisite distance by means of a telescopictube, which expands into a chamber about5 feet in diameter. One side of thischamber is provided with a glass observa-tion window,…
Lighting
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