electro-Physics: 17.3409 volts

[Paul Koning]

>>>>> "Carlos" == Carlos Murillo <cmurillo at manizales.autonoma.edu.co> writes:

 >> It isn't much good for home use. In fact, lamps don't do as well
 >> on DC as AC because of the electrical effects of the wire
 >> evaporating ( not sure which end goes first ).

 Carlos> Ah, the "Edison Effect".  Some electrons (especially those
 Carlos> closer to the negative side) would jump away from the
 Carlos> filament and then, thanks to the electric field, land on the
 Carlos> filament but closer to the anode.  The result was that the
 Carlos> section of the filament closer to the anode would be carrying
 Carlos> more current than say, the first third of the length of the
 Carlos> filament (in the - towards + direction).  So filament
 Carlos> failures almost always occured in the last 1/3 of the
 Carlos> filament. ...

Interesting!  That suggests that DC should be no big problem for
halogen lamps (incandescents with iodine vapor fill).

	paul