Vasile Surducan wrote:

> One simple example: turn on an empty microwave oven.
> Because of reflections inside the heating chamber the thermal
> protection from the magnetron will be OFF in less than 3-4 minutes
> (100% continous power).

One thing I've always wondered. Pretty much every microwave instruction
says not to put metal into the oven -- yet the whole oven is made of metal.
I know that of course metal reflects rather than absorbs, but it shouldn't
do any harm (at least not as long as there is enough other material in the
oven). Or am I missing something?

Gerhard

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