Various types described, for locomotive headlamps, optical applications, traffic lights, automobile lighting, airplanes, photography, moving-picture projection, mechanical purposes, etc. (See also - no. 15 July 24, 1930, pp. 741-745)
New incandescent lamps in service of engineering and science
Neue Gluehlampen im Dienste der Technik und Wissenschaft
Licht und Lampe ; 19 , n 16
1930
4 pages
32 Figs.
Article (Journal)
German
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