[mythtv-users] [Slightly OT] solar power for all our gadgets

[David Brodbeck]

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.