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Post by Lokifan on May 4, 2014 17:50:07 GMT
I watched "Rise of the Planet of the Apes" last night, and saw a movie myth that I think is ripe for busting.
Does sticking a cattle prod into a cell door cause sparks to fly from every cell in the complex?
Problems with this:
1. Isn't the electricity just going to arc between the tips of the prod and the door, and not cause sparks 50 feet away?
2. Isn't the power of such a device so weak that it could't even carry that far through the metal (assuming it didn't get grounded)?
The way electricity performs in movies is usually ridiculous (but very theatrical). There are other myths to bust here as well. For example, I have never seen an electrified fence work like they do in film--where the entire mesh is electrified. In reality, I've always thought that only a few wires strung on insulators could hold a charge, and the rest was regular fencing.
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Post by Cybermortis on May 4, 2014 20:33:17 GMT
And electricity based episode might be interesting to do, the catch is that because of Hollywood the viewer expects to see bolts of lightning arcing all over the place. When the reality is...less impressive and far less visual. (As dropping various electronic items into the bath proved.)
The first hurdle is how to give the visual element that such myths require, without changing the results - which is to say rather than showing us a dial or graph of the results we'd need to find a visual on-camera way to show the results. If anyone can figure out a safe and practical way to do that I'm sure MB would love you for it...ok, they might be mildly impressed...or at least get to hear your screen-name...maybe.
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Post by the light works on May 4, 2014 21:25:42 GMT
It MAY be possible to use a cattle prod to cause a malfunction with a set of electric door releases... but not by simply hitting a piece of metal with it - because it WILL simply short across the surface. the basic rule of electricity is that it will take a route back to itself in inverse proportion to the impedance of the path. sticking a cattle prod against a steel door means the door is essentially a zero impedance path. you will probably get a local spark, but definitely not a spark from other doors, unless you dismantle your lock and hit the actuator wires with enough power to burn out the coils in the other doors - which, by the design of all those doors, unless the releases latch open, they will bounce once and lock, again.
I would like to see an episode on how electricity really works - not that I have any expectation it will stop moviemakers doing stupid electrical scenarios.
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