3 ms·
You'd think grapes would make a poor resonant cavity too. But you can create plasma with grapes in a microwave oven.
by emmelaich 6y ago
You'd think grapes would make a poor resonant cavity too. But you can create plasma with grapes in a microwave oven.
- the_only_law 6y agoBefore I act like an idiot and go do this, is there any significant safety risk or major risk to the equipment in doing this?
- CamperBob2 6y agoShould be fine as long as you put a cup of water in the microwave alongside the grape. They aren't really meant to run empty, and microwaving a single grape would be basically running it empty.
- CamperBob2 6y agoYes, and that's precisely because they are so lossy. It's not a resonant effect. You're just taking advantage of the grape's cross section being roughly a quarter-wavelength at 2.4 GHz, which allows the magnetron to dump a ton of power into it. It's analogous to using a couple of forks to operate a pickle from 120V.
- MacsHeadroom 6y ago>roughly a quarter length Is that not resonance?
- CamperBob2 6y agoThe same thing would happen with an ideal resistor whose leads formed a dipole of the right length, so no.