Re: [Cameramakers] enlarger lenses

[Sid Washer]

>Thought so, you'd need some pretty heavy cabling and probably a direct
>connection to the utility company to power a bulb at 100 amps.  After all,
>12 volts at 100 amps would dissipate 1,200 watts, and that is into a bulb
>resistance of 12/100 = 0.12 ohms!  The loss in the wiring to supply this
>kind of current would be very problematic.>>>

Nah, no problem; you just use some of my Improved Patented
Superconductive Flexible Electron Pipe. In reality, I have seen copper
tubing with oil circulation through used in a couple of rather weird
experimental rigs inside a vacuum chamber for evaporating metal films
onto various substrates. BTW, commercial carbon arc lamps and metal arc
welders can handle upwards of 100 amps at 30-40 volts through 100 or
more feet of rubber jacketed cable regularly.     bye, sid.
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