[Jewelry making - Article 00942] - Re: [Orchid] Metal Shrunk by Powerful Magnetic Field?

[James Binnion]

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>     they set up an experiment with massive copper cables attached to a
>     12 volt battery and the one who was on the betting side of 12 volts
>     wouldn't kill you held on to the cables then placed both arms in a
>     barral of brine. According to the story he dropped dead
>     immediately. 

    If both arms were in the same barrel of brine he would have probably
    been fine but if there had been two barrels with an arm in each one
    he probably would have been a goner. It is the passage of the current
    through the heart muscle that kills you. It either stops or
    interrupts the hearts rhythm and that is what is fatal. With both
    arms in a single barrel of brine the brine would have been the path
    of least resistance and the current would have flowed though it.
    There are many apocryphal stories about folks being killed by
    electricity and most are urban myth often used to try to impress some
    lesson on safety. The current required to be fatal is a few milliamps
    the voltage required is whatever it takes to drive that few milliamps
    through your heart. It could be 1.5V or 1500V it all depends on the
    circuits resistance; are you wet, is it salt water, do you have a cut
    in your skin and many more factors that will determine the amount of
    current flow at a given voltage. The relationship is given by Ohms
    law I=E/R the current that flows in a circuit is equal to the voltage
    in the circuit divided by the resistance in the circuit. 

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550
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