@ AS....... I think this was how x-rays were discovered. Careful that you don't die prematurely of some light stroke.

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When I was in the sixth grade some friends and I found an x-ray tube at the air force base dump.  So we rigged a power supply to fire it up and took x-rays on lithography film.  I feel sorry for the little critters that got sacrificed to the radiation gods.  It is a good thing that my friends brother got jealous and broke the tube or we could all have cancer now as we weren't using shielding.

Free men do not ask permission to bear arms!!