One of the misnomers here is that the power line power you get is at
a steady voltage and without spikes and problems.
You would not believe the spikes and drops you experience during the day.
Every time your AC/Heater turns on, refrigerator etc. etc.
Light bulbs are abused by bad electric flow, and also vibration. We
have a huge amount of Helicopter traffic over our church and we go
through spotlights like water.
Stewart
At 07:29 PM 4/10/2007, you wrote:
Btw, in a stastics class I learned that light bulbs don't fail
because of filament
failure at switch-on. The failure rate is constant with time (I
forget which distribution
models this, but whichever is a "memoryless" distribution) which
indicates that
the cause for failure is most likely external, i.e. power surges on the line.
Rev. Stewart A. Marshall
mailto:[EMAIL PROTECTED]
Prince of Peace
Ozark, AL SL 82
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