@
assemblingaknob Continue to use your microwave oven.That above is someone repeating his Grandma's ignorance and someone else quoting equally nonsensical rubbish based on a cheapskate TV cartoon series. Were they taught no science at school?
A microwave oven's radiation is UHF radio (similar to radar),
not radioactive (ionising) radiation.
Its steel enclosure with a metal screen on the window is electrically earthed, and the door is interlocked to prevent use open; so unless damaged, none of the radiation can leak out and try to cook you as well.
Regulations vary by country but in some, microwave ovens used by way of trade have to have periodic tests to ensure they still meet both radiative and simple electrical safety.
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Cooked food does
not become ionised and the
only electro-magnetic radiation it emits is infra-red (i.e. heat), as it cools.
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You can
not "superboil" water. There is no such thing.
Pure water boils at a temperature affected
only by the containing pressure, which in a microwave oven, saucepan or kettle is that of the atmosphere in your home, so 100ºC at sea-level. Water in Denver at >2000m altitude, will boil at a slightly lower temperature than in San Francisco, down on the coast.
Though the boiling-point is increased by any solutes in it, such as sugar and salt in foods.
It
does not matter how you heat it, However much extra energy you put into it, boiling water will not become any hotter: once it is boiling the additional heat simply keeps it evaporating at the
same temperature. It will just evaporate more rapidly.
That
superboil word might come from someone reading about
superheated steam and misunderstanding it. (That is
steam raised to a higher temperature than at which its
water was evaporated; used in, for example, power-stations; to increase the plant's overall energy efficiency.) In cooking terms, 'superheated' is meaningless, and the word 'superboil' is just nonsense anyway.