Lightboxes

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LIGHT BULB<br />
Frosted bulb<br />
Most light bulbs of 60w or more are filled with an argon nitrogen gas mix. A gas fill slows down evaporation of the filament because gas atoms can "bounce" atoms of evaporated tungsten back onto the filament which can operate at higher temperatures.

Fphoto-19688906B-2RM.jpg

LIGHT BULB
Frosted bulb
Most light bulbs of 60w or more are filled with an argon nitrogen gas mix. A gas fill slows down evaporation of the filament because gas atoms can "bounce" atoms of evaporated tungsten back onto the filament which can operate at higher temperatures.

Copyright:© 1989 Richard Megna - Fundamental Photographs

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Richard Megna