Isn't nice when we share information?  We learn things everyday.
Thanks Des Bromilow.
Wagner.

Des Bromilow wrote:

> ACTUALLY, the analysis of light bulb filaments is a little more scientific...
basically the heat from the lit bulb will allow the metal to move in the directi
on of the crash, so a lit bulb will break, but the broken filament will display
a "conical" shape since the near molten metal has moved to one end of the filame
nt.
> This is how they can differentiate between a bulb that broke due to being step
ped on, and a bulb that was lit.