Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 238
or a wide range of candle-powers. (4) The candlepower (mean spherical)varies approximately with the wattsconsumed on either a.c. or d.c. circuits. (5) Lamps having reasonably pure neonare not so efficient as those in which gasimpurities make the colour of the lightwhiter. (6) The performance of the…
Lighting
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