this post was submitted on 12 Oct 2023
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Why does this happen? (startrek.website)
submitted 11 months ago by [email protected] to c/[email protected]
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[–] [email protected] 7 points 11 months ago (2 children)

How does that even happen? I thought only strongly polar molecules interact with microwaves. What exactly in the plate is polar?

[–] [email protected] 14 points 11 months ago

I know why this is! It's multifactorial but the biggest factor is impurities in the plate, especially ceramic plates, that are polar and/or metallic and DO interact with microwaves, absorbing some energy. Since the specific heat (the amount of energy required to raise the temperature of s substance) of the plate material is typically much lower than food, which contains water (which has a very high specific heat), it'll heat up to a pretty high temperature despite not absorbing as much energy. It remains hot as long as it does as it doesn't contain much or any water, unlike your food, which also provides evaporative cooling.

[–] [email protected] 1 points 11 months ago

Melamine plates aren't microwave safe.