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|    alt.engineering.electrical    |    Electrical engineering discussion forum    |    2,547 messages    |
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|    Message 2,465 of 2,547    |
|    Dimitris Tzortzakakis to All    |
|    Back to the future physics explained    |
|    23 May 23 14:23:54    |
      From: noone@nospam.com              As known, doc said that the Delorean needed a 1,2 GW *impulse* obviously       to travel through time. The problem with the lightning as was seen on       the movie, is of course a bolt of lightning has gigantic power numbers       (2,000,000 Volts and 100,000 Ampere) but the maximum current flows only       for a few ms, making it only a few KWh of energy, so they would need to       synchronize the car passing under the wire just when the lightning would       strike and with a precision of several ms, so Marty would miss it as he       couldn't start the car engine right away. But a high voltage trasmission       line would easily give an impulse of 1,2 GW, such lines of course were       long in use before 1955. The problem is of course it would be AC.       Another problem lies in the depiction in the movie of Doc connecting the       connector just in the nick of time, of course that would be impossible       as of course the current flows with the speed of light. Another problem       is with the plutonium, was it weapon grade plutonium (metallic) or       plutonium dioxide, used with uranium dioxide in reactor fuel rods? Just       my 2 cents....              --- SoupGate-Win32 v1.05        * Origin: you cannot sedate... all the things you hate (1:229/2)    |
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