tech e blog

02/13/2007

How it's Made: Light Bulb

If you've always wondered how light bulbs were made, then check out this interesting "How it's Made" segment. Video after the jump.
An electrical current passes through a thin filament, heating it and causing it to become excited, releasing thermally equilibrated photons in the process. The enclosing glass bulb prevents the oxygen in air from reaching the hot filament, which otherwise would be destroyed rapidly by oxidation

This entry was posted on 02/13/2007 02:40am and is filed under Science, Video .
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There are 3 comments about this post (1 pages).

1
Posted at 02/13/2007 08:15am by roni84av
COOL.. i always wanted to know how they made light bulbs
2
Posted at 02/13/2007 3:26pm by Chris
Why post a vid that is no longer availible???
3
Posted at 02/13/2007 8:03pm by Engineering
Very Interesting Site______________ www.globaljobsengineers.com Engineering Jobs
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