[mythtv-users] [Slightly OT] solar power for all our gadgets
gull at gull.us
Fri Mar 20 23:59:31 UTC 2009
On Fri, March 20, 2009 3:33 pm, David Watkins wrote:
> ..and because their light output starts falling away after about a year.
Incandescent bulbs lose brightness as they age, too. This is especially
obvious on small, clear bulbs, like car tail lamp bulbs. Pull out one
that's been in there a few years and it has a nice film of tungsten
covering the inside of the glass, cutting down on the light output. By
the time they burn out they look like convex mirrors.
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