Honus wrote:
"SR" wrote in message
...
In the movie Frankenstein, I remember seeing tubes in the laboratory.
Besides the monster being scary looking, the tubes and electricity in
the laboratory was also very scary.

There was also two large electric bolts. I think that was real because
I had seen things like that in Edison's photos.

I wonder if these tubes were real or made up to make the movie even more
scary? Also, taking consideration the times: It would be normal to see
electric tubes in a lab.

I wonder if you're referring to Tesla coils.

http://www.mos.org/sln/toe/gallery1.html



Probably a Jacob's ladder. I made one of these once using a big neon
sign transformer. The sixteen thousand volts would jump a half inch gab
at the bottom of the rabbit ear shape electrodes and then move up the
diverging wires because of hot air.

Coincidentally, that that was also the year I discovered radio interference


http://snipurl.com/iv98

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One of those old(bad) movies had a huge Jacob's Ladder inside a large
transparent (glass, I assume - Plexiglass wasn't around then) hollow
column resonant at 60 Hz. Unbelievable sound!

http://members.misty.com/don/jacobs.htm#jlnrb

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mike