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CatalystIsMyFav t1_j9kw5vt wrote

I imagine because the plate is thinner than the food so it takes less to heat it up because the heat has less atoms to travel through

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ElemLight t1_j9ky0dv wrote

Not exactly how microwaves work.

Microwaves excite molecules, especially things that are the same size as the wavelength (1mm-1m depending on the frequency), i would guess that the plate being bigger than the food and full of impurities, it's molecules absorb more waves/energy.

Or it's just that that person's microwave has a lot of standing waves at the very bottom of the pedestal.

A fun thing to look into: Electrobooms microwave standing wave video and the one where they create plasma in grapes (grapes that are the same diameter as the wavelength)

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