this post was submitted on 16 Oct 2025
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its actually not. You need something the size of at least half the wavelength of the microwave, or multiples of it. Thats why forks and aluminium foil spark a lot (they have "antennas" that allow for charge separation through the microwave and if two of those separated charges are in close proximity a spark is formed).
But if you have one single "antenna" like in a knife or spoon, no part of large charge separation is close enough for a spark.
However if you dont know about this you better not put anything metallic or conductive into the microwave.
We had a microwave in highschool we used to throw shit into to see what happened. CDs were good.
Incandescent light bulbs are the best