Why don't metal microwave ovens spark off themselves?

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Offline thedoc

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The inner walls of a microwave oven are made of metal; so why does the oven explode when another piece of metal is placed inside it?

Asked by aceng.at

                                        Visit the webpage for the podcast in which this question is answered.
[chapter podcast=1000585 track=14.01.07/Naked_Scientists_Show_14.01.07_1001828.mp3]  ...or Listen to the Answer[/chapter] or [download as MP3]
« Last Edit: 16/01/2014 14:24:41 by _system »