Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 131
o. lO. __Moto(\ Headuam p Testsvzp.ticr1. distri&utjoms PUJTTeo TVs THE SAME CANDLE fVr*E<*ftfiTO OF HtflOWlMPViiTH PLfiJN G&J&5 VI BBHtU=lMPVOLTS lj J ^MPSREi 3L3A M.S.C.P. EO-O U/V6NS. ESO- A. B. . C. D. E.F. 6JLxJ AX\> ic. IXLLON ,IXNS- S800 162 mns. Hoo.vvxn u… … Fig. 2.—Illustrating appearance and distribution of light from Holophane headlight lens. spread of light was not shown. A tre-mendous number of readings would haveto be taken to obtain the hemisphericaldistribution, the light distributions beingasymmetric. Also it was difficult, for thesame reason,…
Lighting
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