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Microwaving Grapes Makes Plasma
About this video
Veritasium explains why a halved grape in a microwave makes plasma: the grape traps microwaves, and the fields of two halves interact to concentrate energy where they touch.
Why it appears in the archive
Mentioned as a classic physics demo in threads on microwaves and related resonance effects.
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From the Hacker News discussion
It depends on the frequency. The brain is mostly water, but there are clear differences in the dielectric constant of air, the skull (bone) and the sweet delicious gray matter inside the cavity. By tuning the frequency of the waves, you can set up resonances in the cavity. For a related effect, see [VIDEO]
Read original comment ↗Related classics: (2019) BigClive overclocks a 120v Presto hot dogger to 250v [LINK] (2019) Veratasium grape microwave plasma [VIDEO] (2022) BigClive The dangers of microwave transformers [LINK] (2016) BigClive Electrocution risk of cheap USB chargers [LINK] (2020) ElectroBOOM proves 5G isn't going to give you cancer or eat your children [LINK]
Read original comment ↗Pedantry, from a promateur, but also see the Veritasium tube linked elsewhere here: 0. No cutting needed whatsoever, but you do need a watch-glass. (Keeps the grapes in contact) [VIDEO]
Read original comment ↗veritasium video [VIDEO] Essentially, when this gets commercialized we'll be able to make room-temperature qubits using two grapes and a diamond in a microwave oven. This opens up a whole new field of "grapetronics" for scalable quantum computing hardware.
Read original comment ↗