Abstract
THE War has forcibly directed attention to artificial lighting both indoors and out of doors. Blackout conditions in towns with their mentally depressing effects, their restrictions on social intercourse and their responsibility for more street accidents have emphasized man's dependence upon electric lighting. Indoors, particularly in modern factories which, like Hardwick Hall, are more glass than wall, the same black-out conditions have resulted in the continual use of artificial light even in the day-time. Specially welcome, therefore, is the interesting account of “Electric Discharge Lamps”, written by V. J. Francis and H. G. Jenkins, recently published from the Research Laboratories of the General Electric Company in England. In about sixty pages an excellent technical account is given of “Osira” and “Osram” fluorescent tubes and their operating equipment. The many illustrations include spectrograms and oscillograms obtained from the tubes in operation. The story of the development of the tubes is an excellent illustration of the application of advanced academic physics in industry, and peace-time may well see the discharge lamp, historically the earlier, replacing the heated filament bulb.
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Electric Discharge Lamps. Nature 149, 75 (1942). https://doi.org/10.1038/149075a0
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DOI: https://doi.org/10.1038/149075a0