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Old 10-20-2010, 02:15 PM   #1
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Onions

I was just wondering if anyone knows why chopped onions often arc when they are cooked in the microwave. Happens all the time and I just decided it's time to find out why.

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Old 10-20-2010, 02:23 PM   #2
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I didn't know they did. I've never cooked onions in the microwave. I'll be watching to find the answer.
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Old 10-20-2010, 04:06 PM   #3
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i cook onions with other vegs (yellow squash for one)in the microwave. never had them arc.
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Old 10-20-2010, 04:07 PM   #4
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they do? I gotta try that!
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Old 10-20-2010, 04:10 PM   #5
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I worked with a guy who put a light bulb in a glass of water so the metal was covered and turned it on.

The bulb lit!

I gotta try the onion thing!
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Old 10-21-2010, 11:11 AM   #6
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faulty microwave???
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Old 10-21-2010, 09:12 PM   #7
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I've also heard (never tried) that an average grape cut in half, still attached to each other by a sliver of skin, will also arc in the microwave. I'm not a physicist, but I suspect it's just a simple function of two ends of a conductive medium (including water) being harmonic with the wavelength of microwaves, so that you'd get the same effect with a piece of potato carved into the shape of a chopped onion. I could be wrong, and in any case, I think this is one of those things, 4meanandthem's enthusiastic experiments nothwithstanding, that I'd preface, "don't try this at home."
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Old 10-21-2010, 09:19 PM   #8
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Now I have 2 things to try!
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Old 10-22-2010, 12:08 AM   #9
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Are you sure about your container. I've had arcing from gold decorated plates.
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Old 10-22-2010, 10:43 AM   #10
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Quote:
Originally Posted by spork View Post
I've also heard (never tried) that an average grape cut in half, still attached to each other by a sliver of skin, will also arc in the microwave.
I have to ask what the reason would be for microwaving a grape, other than too much time on your hands . I'm intrigued!

Regarding the arcing onions... I think I've experienced this before too, now that I think about it. I don't normally microwave onions but I know I've had some things arc in the microwave unexpectedly and I thought it was time to get a new microwave maybe (I didn't). It's a mystery to me!
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