Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 63
nstallations ofthe artificial north-skylight units areshown in Figs. 3 and 4. Experience has shown that the averageeyes are not sufficiently trained and thatmany needs are insufficiently exactingto demand a highly accurate artificialdaylight. Furthermore, a large demanddeveloped for fairly… … Fig. 1.—A snnll Colour-matching Lamp Unitwhich may be attached to a socket. made in the shape of globes and acornsfor use with the clear-bulb Mazda Clamp. These are largely used in indus-trial establishments in connection with
Lighting
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