Posted: 8/17/2014 5:17:19 AM EDT
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Quoted:
when I saw the title, I thought of this microwave attenuator thread  http://www.youtube.com/watch?v=cZkAP-CQlhA"They sure filled that cavity!" |
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goddamn, science gives me wood. 
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Thanks for the video. It's amazing to compare the price of magnetrons now with what they cost in say, the 50's for other uses besides ovens, before mass production. |
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And that is why you only use the minimum power necessary to make the QSO. |
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Quoted: So basically the microwave oven works because the cooking chamber has a high SWR? And most of us know from basic physics that any form of energy that is "wasted" gets transformed into heat. One small point, he says he heats it evenly all the way through. That is true, but ONLY if the item has uniform water and not so large as the energy is absorbed before full penetration. |
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Quoted:
Frequency of water rotation, friction does the heating. One small point, he says he heats it evenly all the way through. That is true, but ONLY if the item has uniform water and not so large as the energy is absorbed before full penetration. Quoted:
Quoted:
So basically the microwave oven works because the cooking chamber has a high SWR? And most of us know from basic physics that any form of energy that is "wasted" gets transformed into heat. One small point, he says he heats it evenly all the way through. That is true, but ONLY if the item has uniform water and not so large as the energy is absorbed before full penetration. (edith bunker voice) "OHHHHH, I get it Archie, I think." (nervous edith giggle) |
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Quoted:
Frequency of water rotation, friction does the heating. One small point, he says he heats it evenly all the way through. That is true, but ONLY if the item has uniform water and not so large as the energy is absorbed before full penetration. Quoted:
Quoted:
So basically the microwave oven works because the cooking chamber has a high SWR? And most of us know from basic physics that any form of energy that is "wasted" gets transformed into heat. One small point, he says he heats it evenly all the way through. That is true, but ONLY if the item has uniform water and not so large as the energy is absorbed before full penetration. The water molecule rotation I got the first time through, just had a blonde moment when I posted. But if the microwave is heating the cheese all the way through why were there bands of melted cheese alternating with bands of unmelted cheese? His comment about the standing wave and him doing the math to calculate the frequency of the microwave got my attention. |
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Quoted:
Next time I'm in the Microwave lab in the Electrical Engineering building at Texas Tech I'll have to take a picture for y'all. Until then, just think microwave oven with hole cut in side and waveguide coming out... there is a popular youtube parlor trick where a hidden microwave-sourced magnetron is used to pop kernels of popcorn placed near cellphones, as "proof" of the strength of the RF radiation emitted from the phones. i warn you on replicating this stunt, because if you are looking for a way to blind yourself via irreversible retina damage i can't really think of a better way. ar-jedi
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Quoted:
there is a popular youtube parlor trick where a hidden microwave-sourced magnetron is used to pop kernels of popcorn placed near cellphones, as "proof" of the strength of the RF radiation emitted from the phones. i warn you on replicating this stunt, because if you are looking for a way to blind yourself via irreversible retina damage i can't really think of a better way. ar-jedi http://www.youtube.com/watch?v=V94shlqPlSIQuoted:
Quoted:
Next time I'm in the Microwave lab in the Electrical Engineering building at Texas Tech I'll have to take a picture for y'all. Until then, just think microwave oven with hole cut in side and waveguide coming out... there is a popular youtube parlor trick where a hidden microwave-sourced magnetron is used to pop kernels of popcorn placed near cellphones, as "proof" of the strength of the RF radiation emitted from the phones. i warn you on replicating this stunt, because if you are looking for a way to blind yourself via irreversible retina damage i can't really think of a better way. ar-jedi http://www.youtube.com/watch?v=V94shlqPlSIWhat is scary is people trying to use microwaves for this. It was fake from the beginning.
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