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Originally Posted by ThomasMc
No, you originally brought it up in reference to radio signals, not lightening. You used lightening to back up your point.
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I'm very sorry, but you're misrepresenting me. I made the point about Faraday cages in post #29, in reply to a point that "lightning strikes are more powerful than mobile phones". You then asserted in post #189 that Faraday cages only work if they are grounded, which is simply untrue. There is zero electric field inside a hollow conductor as a result of an external electric charge regardless of whether or not it's grounded. All that grounding does is to provide a mechanism for draining away that charge. On an aircraft, as you pointed out yourself, that's done by charge dissipators - basically spikes - which are often located on the trailing edge of the wing.
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If that were true, as you claimed, about the Faraday effect cancelling them out, then it would also be true on the ground, and you would not be able to use your phone inside the fuselage there, either.
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That would be true if planes were entirely sealed conductors. They aren't - they have windows, which radio waves can pass through. That's why you can use your mobile phone on a plane. If you were sitting inside a sealed metal box, your mobile phone wouldn't work.