- #1
oneamp
- 219
- 0
I understand that the electromagnetic waves inside a microwave can induce a current (terminology?) on a metal object within it. What I don't understand is why, when my fork touched the interior casing of the microwave, it made a lot of sparks and an arc-welder like black mark on the wall. If the wall is conductive, why don't the waves induce current on them, as well?