Science v. Nature

Radio Record, Volume III, Issue 52, 11 July 1930, Page 34

Science v. Nature

ee Artificial Lighting wom At an illuminating conference recently held in New York, windowless factories, lighted by artificial means, were advocated. It was asserted that not only would the omission of windows save five per cent: in building costs and forty per cent, of maintenance expenses, but control of heat and circulation of air would be facilitated, and the efficiency of workers increased. Dr. BE. BE. Free, consulting engineer and scientist, stated: "The lighting In a factory illuminated by daylight is changing constantly, so that only for short periods every day will each machine, desk, or work-bench receive that kind and amount of light best suited to the eye. Artificial lighting, however, does not mean the equal.of present average daylight illumination, but from five to ten times that amount as required,"