Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 267
s ordinarily collected by the bottompart of the reflector was projectedalmost parallel in the usual way and thelight which under ordinary circumstancesformed the top half of the beam wasslightly inclined, so as to overlap thelower half of the beam. The effect was that the light was notradiated from… … Big. 1.—Section <>f Whitehead Headlight. the resulting beam was that of a semi-circle. It owed part of its intensity tothe lower part of the reflector and partto the superposition of the beam fromthe upper part of the reflector. The designer had aimed at producing abroad beam, and a road test…
Lighting
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