Submitted by FreshT3ch t3_10n6wg5 in explainlikeimfive
Chromotron t1_j68mw2t wrote
Reply to comment by Marsstriker in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Fruit flies, not normal flies. Normal flies are large enough to die. The heating of an object significantly below the wavelength (centimeters) is proportional to the size, due to the electric potential created by the microwaves. The fruit flies also have the added bonus of much surface area per volume.
It is also not just the sweet spots, the flies survive even if they move around randomly. Anyway, here is a video by Cody.
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