How Things Work: Microwave Ovens
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- Опубліковано 13 тра 2019
- A Visit to Starfire Industries on the Research Park of the University of Illinois at Urbana-Champaign explaining what they do in terms of making neutron generators and power supplies. A detailed look into what is in a microwave oven and how the microwaves are generated by a magnetron. Taking apart a microwave oven to find out and explain what makes it work. Making a plasma out of a grape and a beer glass for Prof. Ruzic’s granddaughter. Why microwaves heat food and not the plates the food is on.
If I become dictator. Illinois EnergyProf will be chief explainer of complicated stuff
Admiral General!
A series of UA-cam videos that are informative, interesting and entertaining. UA-cam must demonetize this series immediately!
@@forbidden-cyrillic-handle i hope they dont
Fusion blasphemy!!!
heretics shall be demonized
Anytime it says don't try this at home, I just go over to my friends house.
You mean that burning...thing across the street?
Dear Mr Ruzic! You should get in touch with Joe Rogan, please get your videos more popular they are brilliant and deserve to be seen
So... Plasma monkeys... They live in a utopia within the aether and are all happy and don't eat each other... That's a trip man...yeah
"A Cavity magnetron, wow that's very interesting, have you ever tried DMT?"
This is really excellent, @Illinois EnergyProf! This is exactly the kind of science experiment video to search for to show my kids. Thanks for being awesome. I'll be showing the lecture videos to them after things like this and those done by Periodic Videos.
I am addicted to this videos !!!! Keep it up.
I love these videos . Very informative
You can melt glass with a microwave. You have to first heat the glass up with a torch. Cold glass is too stiff and won't vibrate. The heated glass has enough give to allow the microwaves to further increase the energy.
I wish I lived in a world where this video had more views than whatever random pop music video is now trending on youtube.
Do your duty and report as repulsive content gpy
What you also *need* to know is do *not* slice a magnetron open to see what is inside.
Unless you know what you're doing, you'll slice through some beryllium oxide, generating dust that is very bad for you if you breathe it in.
Love the shirt!
To get to the actual microwave stuff.. 4:00
Brilliant video, are microwave ovens PWM modulated?
Most microwaves are, but at a very low frequency, around 0.1 Hz to 0.2 Hz. It relies on thermal averaging in what you are heating up. Some microwaves are modulated faster (Panasonic inverter, for example) that are modulated much faster.
is the risk of neutron activation low due to the neutron energy? otherwise using neutrons to scan sounds kind of crazy.
please do a video on general fusion
Fascinating video. Not least because of Brian’s suspiciously combover hairstyle.
And if you soldered a coax to the output of the magnetron and ran it to an antenna outside, would you mess up people's wifi in the neighborhood?
STARFIRE IS A COMPANY
i still think the fcc is the reason for the frequency not some special resonant frequency with h2o
How do the electrons go in a circle. I know like a solenoid has a wire to travel through for example.
Electrons are charged particles. The path of any charged particle is affected by magnetic fields. Search for "How a Magentron works". Also, I highly recommend checking out some videos on the Kreosan channel. Those guys are crazy, they did a series of cool videos with a dismantled microwave.
That's the detective from Dexter you can't fool me
I need that shirt!
so could a different sized magnetron be tuned to produce visible light or infrared etc etc
According to the electromagnetic spectrum... Yes
Yes, but you wouldn't be able to see it, as the light would be created inside the cavity magnetron with no way to escape.
You could use the microwaves to hit some sort of phosphor covered surface and emit light that way.
But the easier way would be just to use a light bulb.
That was another great video! You are an excellent instructor. But.... I like the shirt but the tie has to go.
You should mention that metal in a microwave will get induced currents which can be a dangerous situation.
This is Tool Time from a slightly altered universe
Where do I get that tshirt? I tried it at home.
I get my shirts from a place called feelingoodteesDOTcom, they always have great sales like buy 2 get 6. Ordered from them like 3 times.
Weird that I was always more afraid of magnetron than capacitor... They always tell me that not protected magnetron could really badly hurt you...
The magnetron is only dangerous when it's on, when it's off it's safe.
However, take precautions around the pink/white insulator of the antenna, some old magnetrons used beryllium oxide as insulator material, and that is really dangerous if you crush it and inhale the dust, and it can give you berylliosis, and that is incurable.
Modern magnetrons use aluminium oxide instead which is safer, but you still don't want to crush and inhale that dust either, and there is also pink aluminium oxide so going by color itself doesn't help.
Electrolytes.👍
I also need to know how that microwave is absorbed in other liquids like oil, milk etc. and more importantly how it affects chemical bonds in food, does it affect them differently than conventional heating? Can it flip perhaps double C=C bonds or is the energy not enough for that or am I missing perhaps the important question on how to compare these heating methods that is relevant to human health? I would like to see an honest scientific investigation and comparison of microwave vs. conventional heating, because to me it seems that either the microwave manufacturers tell people there is nothing different about it amd there is no danger at all vs other people that tell us it is very unhealthy. Same thing about the 5G technology that will cover us in much lower intensity but constantly present microwave radiation - what will the effects of that be?
You won't die from heating food in your microwave, just don't leave it too long in it that it starts to char and burn.
And the power used in communications microwaves, is not high enough to even warm you.
The Sun puts on you around 500W of power and around half of that is IR radiation.
Don't fall for all the nuts that claim that 5G will give you Cancer, staying on the sunlight for too long can actually give you Cancer.
If microwave heating had serious health risks, we would have noticed them by now, the only danger I see from microwave ovens, would be from older ones that might leak microwaves, and if they are even older, they could contain beryllium oxide on their antenna insulator, which is nasty stuff if you crush it and inhale the dust, and there is no cure for that.
Coincidence that Wi-Fi runs at the same or very similar 2.4 gigahertz?
No, but microwaves came first. Then the FCC made that frequency unregulated so you don't have to get a license to use your microwave. It was just a slice of unlicensed spectrum that was easy for wifi manufacturers to jump on (no license needed to turn on your access point!).
Does it need a magnatron too?
Combovers that bad should be illegal.
My professor makes videos where he shoots apples out of trees. I mean I suppose there's plenty of room on UA-cam for all kinds but ya know...
Longer wavelengths???? Surely you mean shorter wavelengths but higher frequency?
Higher amplitude longer interval of transition
vvvvvvvvv (high)9
VVVVVVV (low)7
Lower frequency than infrared, so longer wavelength.
you lost me when you said a fracked well is not dangerous. i can see because you have fracking customers you want to make them look good, but then you're not about teaching, you are a commercial.