Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 534
understand from the BritishThomson-Houston Co. (Mazda House,77. Upper Thaines Street, London, E.C.)that the Mazda lamps are now beingused for photographic work, small six-volt concentrated filament lamps beingfrequently used with a parabolic reflector.These lamps are operated at about 10—20per… … KEITH HIGH PRESSURE LAMPS. We have received from Messrs. JamesKeith & Blackman, Ltd. (27, Fan inj-donAvenue, London, E.G.), some bookletsdescribinji; the application of the highpressure lamps of this firm in vaiioustrades. Illustrations are given of variouslarge premises, including a…
Lighting
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