Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 199
perature; if suchglowers were connected directly across a constant poten-tial circuit the current would, therefore, keep on increas-ing until the glowers would burn out. To prevent this 176 ELECTRICITY FOR EVERYBODY. it is necessary to connect a steadying resistance in serieswith the glowers, which… … Glower b*rtLEtt*co.jH.y. Fig. 74. of air,- is used in the Nernst lamp for this purpose, andthis iron wire resistance has been termed a ballast. Theconnections of the elements in the Nernst lamp are shownin Fig. 74. The glowers in the Nernst lamp are enclosedin a glass globe to protect them from…
Electricity
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