The rate of seasoning of gas-filled and vacuum tungsten lamps is consistent with the view that recrystallisation of the tungsten filament is the main process involved. The changes during seasoning indicate a decrease in emissivity of the filament which is largely non-selective with regard to wave-length. Seasoning at a relatively low colour temperature almost completely stabilises standard lamps for operation at higher temperatures, and has the advantages of producing less blackening on the envelope and expending less of the useful life of the lamp.
Get full access to this article
View all access options for this article.
References
1.
De VosJ. C., Academisch Proefschrift, Orije Universiteit te Amsterdam (1953).
2.
DreslerA., “Photometrische Bewertung und Messung von Lampen und Beleuchtung,” p. 35, Praktische Lichttechnik (Ed. ArndtW.). (Berlin: Union Deutsche Verlagsgesellschaft Berlin, (Roth and Co.) (1938).
3.
JuddD. B., J. Opt. Soc. Am., 26, 409 (1936).
4.
SmithellsC. J., “Tungsten” (Chapman and Hall, Ltd., London) (1936).
5.
BalickiM., “Recrystallization,” p. 52, Physics of Powder Metallurgy (Ed. KingstonW. E.) (London: McGraw-Hill Book Company, Inc.) (1951).
6.
MüllerE. W., Z. Phys., 126, 642 (1949).
7.
GeissW., and van LiemptJ. A. M., Z. Phys., 41, 867 (1927).
8.
JonesH. A., and LangmuirI., Gen. Elec. Rev., 30, 354 (1927).
9.
BeckerR., Z. Techn. Phys., 6, 309 (1925).
10.
KorefF., and PlautH. C., Z. Techn. Phys., 11, 515 (1930).
