๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Chemistry of the Incandescent Lamp

โœ Scribed by Priv-Doz. Dr. A. Rabenau

Publisher
John Wiley and Sons
Year
1967
Tongue
English
Weight
814 KB
Volume
6
Category
Article
ISSN
0044-8249

No coin nor oath required. For personal study only.

โœฆ Synopsis

Halogen lamps have been on the market for some time; they are replacing the conventional lamp in many fields except general service (domestic) applications. Their relatively small

bulbs contain small amounts of halogen in addition to an inert gas. The mode of action of the iodine lamp, which depends on the presence of traces of oxygen, has been elucidated. Tungsten evaporating from the filament is returned to it by a cyclic process involving a tungsten oxide and W02I2. No tungsten is ever deposited on the bulb wall of such a lamp. A regenerative cycle in which the vaporized tungsten is deposited on the hottest (and hence most vulnerable) parts of the filament can, in principle, be realized by the use of fluorine compounds.

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