How come if you put a piece of aluminum foil....?

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How come if you put a piece of aluminum foil....?

In a microwave, and then start the microwave, the foil catches fire?

2007-07-18 13:00:59 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science

2 answers

It doesn't exactly catch fire, but aluminum has high electrical conductivity. The microwave radiation induces very high currents in the foil, which has very low thermal mass. It thus heats very quickly. Not a good idea.

2007-07-18 17:56:12 · answer #1 · answered by Frank N 7 · 0⤊ 0⤋

because microwave reflect off of the foil and cause friction or sparking

2007-07-18 20:03:51 · answer #2 · answered by Chris A 1 · 1⤊ 1⤋