tungsten lamp

an incandescent electric lamp in which the filament is made of tungsten.


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World English Dictionary
tungsten lamp
a lamp in which light is produced by a tungsten filament heated to incandescence by an electric current. The glass bulb enclosing the filament contains a low pressure of inert gas, usually argon. Sometimes small amounts of a halogen, such as iodine, are added to improve the intensity (tungsten-halogen lamp)

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American Heritage
Science Dictionary
tungsten lamp  
An incandescent electric lamp having a tungsten filament.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The system response is calibrated by a tungsten lamp with known radiance.
Calibration against tungsten lamp-based uniform sources does not represent scenes remotely sensed.
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