Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 89
ai Hood lighting must continue to rely upon reflectors whichreceive less than half the total luminousflux. In the case of headlights, there shouldbe no difficulty in obtaining low voltagefor use with special concentrated sources.It is interesting to note that I haveobtained 16-volt gas-filled… … Fig. 3.—A—Typical carve of m idem high intensity searchlight. B—Curve obtainablewith a (kit or concave light source. C—Curve, with cathode removed, given byordinary carbon electrodes using the same electrical energy. It is surprising that this type of re-flector has not been more used for…
Lighting
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