Beautiful 😂

essentially

Well, between the flute and donkey analogies I totally get this! When I use the microwave I always say I'm "nuking" my food. Been right all along. Thanks!☢

Genius

obviously

Hey, take that back!

Yeah. Blueprint did it better.

It’s not bad for a simple overview, how exactly all this happens is rather more complex than it seems, quite a bit of pretty advanced physics going on... one thing left out more or less is the oscillating is in both the electric and magnetic feilds, it seems to focus mainly on the electric feild... still not bad for someone who just wants to know roughly how they work without actually knowing much of anything about how they work in reality...

I feel like this carrot is beyond my reach...

My exact thoughts, it deserves an award for outstanding research and production. I also love the historical bit at the end mentioning how the technology was little understood in the beginning. Supposedly, American scientists were initially amazed at how such a small device could create so much power.

haha. i watch this like once a year and keep forgetting it

That is why other scientists outside us exists

@@airb1976 almost everything is invented by scientists outside the US.. and the things that ARE invented in the US, are by foreign scientists living in america lol

@@Daniel-qs8ec i know that

This might be silly question but can u explain that how in such cases electron's potential energy is determined by its anode from anode? why when velocity of electron decreases potential energy decreases? Thank you

@@revatis2571 I suppose he meant kinetic energy.

Isn't it KE

Thank you for bringing our attention to missed details . But Maxwell states that all charged particles have electric fields which in turn generates the magnetic field perpendicular to it . The HF would mean electric fields turning positive and negative very rapidly . The moving particles would have their own fields . The fields are waves . There would be waves interaction. The waves would have two dimensions . Place the rest of information in reply to further my understanding

​@@Adolf0is0winner The waves are always, difference in density between different particles, no matter what the environment is... in an environment of different particle sizes, it is possible to generate waves of different sizes by compressing some of the particles. Empty environment, without any particles, does not exist. All smallest charged and uncharged particles are electric fields in different densities. Density of the particle electric field determines of what atom do we have.

We were smarter back then

@@gwcoty0715 true and we are evolving just backward

Pretty sure the powers that be do not want us to be all smart

@@gwcoty0715 No there were always dumb and stupid humans

Only ETS. Basically every major breakthrough .

😂😂😂same here. I was about to post something similar

funny. now if only ppl understood the deliberate planned socio-economic manipulations that led to the world wars as easily as this video assumes for magnetrons... also, klystrons were the competing design...

Yeah, I wonder where that winner of a title could've come from...

Title is correct. It explains the physics behind the device. And of course, its usage.

You can make an instant coffee with a magnetron. Just make sure that your microwave oven is not a Decepticon hiding in your apartment.

What do you mean someone "else"?

@@ewthmatth Not all billions of these people are that smart/intelligent.

All it takes is understand how the laws that rule this universe work, but not everyone in this world can. Indeed it's amazing how a brain that was only used to hunt and gather food to survive, is able to be pushed and figure out how this universe works. And then we have the bulk of idiots who believe in a flat earth and other nonsense. But oh well, at least those idiots are not in charge of developing new technologies and medicine.

Without those “idiots” those “smart” people wouldn’t have the resources to produce technology like this. What’s more amazing is the economics that makes it possible.

Thomas wow that’s the dumbest thing I’ve seen today

The short version: return wave has predictable frequency, big antenna with special shape points toward where reflection should be coming from, given speed of light thru air, measure time between outgoing pulse and incoming pulse to measure distance. Size of object corresponds to strength of reflected signal.

adding to sunsor comment above : S send pulse, R = return pulse S______________R__ far S_____R___________ near Simple math on how long it takes to receive the return pulse will tell you distance. The pulse is directional, and if you rotate the sending antenna, the turning of the antenna is much much slower than the speed of light, so the return pulse will come back before the antenna has turned much (so, it is basically still pointing in the same direction). So, if you receive more than 1 return pulse, you have more than 1 contact in that direction. This makes it easy to use a cathode ray tube (the kind one would use for an old oscilloscope) to plot the signal. All the CRT needs to do is scan in the same direction that the antenna is pointing, and shoot electrons any time a return signal is detected, and the time it takes for the electron beam to make one scan to the edge of the screen removed the need to actually do any math (it just comes out as a result of the time it takes to trace/not-trace the line). If you do it digitally, though, then you actually have to do a bunch of processing before you can display anything. Using a CRT is thus a much much simpler process (just scan a line from center to edge in the same direction as the sending antenna, shoot electrons when there is a return signal received), adjust scan line speed to adjust zoom (slower scan line speed gives further out zoom; faster gives closer in zoom).

@@busimagen thanks for expanding. I presume it is almost the same principle as for ultrasonic sensor in Arduino, with a difference in speed, that is instead of the speed of sound 340 m/s one has speed of light 300 000 km/s. And as you pointed out, the speed of light/radio wave is way faster than the speed of rotating radar. I thought the video could have gone into these details as well, but for some, I guess, it would be over the head.

@@infatum9 Yes, same idea with ultrasonic sensor, though the technology of the generating the wave and its detection are different. The video talks only about the Cavity Magnetron, and that's a good thing to limit the scope of the topic. Use in radar would be a different topic.

@@busimagen Excellent explanation. Now, about those phased array, multi frequency critters...

@@tbird81 I don't. But this video gives a ton of insight in a really short time.

because Americans have a hard time understanding it

stank face on

An analogy of a magnetron is a whistle like that which a football referee would use. Think of the metal body of the whistle as a single tuned cavity (tuned to the pitch of the whistle). When you apply power to the cavity by blowing hard into the whistle, the cavity oscillates at its tuned pitch producing a loud noise very efficiently. The output (in this case noise) is transmitted via a port to the outside world. A magnetron is similarly a tuned cavity (actually a ring of cavities), and high voltage, high current provides the power. The magnetron output is a single frequency just like a whistle but at a very much higher pitch. That output is transmitted to the outside world by a waveguide (pipe). An electric whistle.

Knowing what I know now, it seems so obvious. The genius part was to get the electrons to loop around unlike a normal vacuum tube where the electrons travel in a straight line. TV cathode ray tubes use the same principle but with electro magnets to bend the election beam to the correct part of the phosphor coated screen through a fine mesh mask. This uses very strong permanent magnets to cause the electrons to loop out then back in just like solar flares on the sun

Jesus loves you

Believe me, physicists and electrical engineers are the special breeds of superhuman intelligence.

Up until recently (20yrs) valves were the go to choice for high frequency high power like 50kw radio station final output stages... Mind you it took days to get to operating temperature IE if you don't thermal cycle em right you will crack them.

LC drag was a massive problem with the Receiver. Triode and Diode Mixers were next to useless. It lead to the development of Silicon Crystal Diode and the start of semi-conductor tech (once they got the Silicon pure enough to do it in 1942).

I like your original comment !

Well, it came from Britain who led the world in electronics at the time

Radars don't use them anymore

@@manuelpiston that's not true. I am a magnetron technician and we make and sell them

@@janthurman9894 Not the ones I work on. They use amplifiers instead of magnetrons.

@@manuelpiston An amplifier doesn't emit microwaves

I don't drink coffee, I take tea my dear

Well did you get your coffee?

As everything else from the English language media about Germany and WW I & II, ..."The Invention That Won The War"... is another baseless exaggeration. Radar had also been developed by the Germans, and the very high frequency type was much more precise that what the British could muster. Wikipedia is reasonably fair on this.

@@BasementEngineer Hilarious and baseless rubbish the Cavity Magnetron was invented by the British and exchanged with the Americans for their productive assistance in manufacturing for WW2. Along with many other cutting edge technologies like the Frank Whittle Jet Engine and the all but proven theory that an atomic bomb was feasible...Just stop talking nonsense and read up on the Tizard Mission. you're wrong DEAL WITH IT.

@@BasementEngineer Face it - chain home radar and similar designs were used all around the world inclusing the US Navy but the Cavity Magnetron was AMAZING and it was invented by the British.

@BasementEngineer - German RADAR was nothing compared to the increase in power by the tiny Cavity Magnetron that was housed in panes and used to detect enemy aircraft and submarines. You have ZERO evidence proving your nonsense.

@@georgebishop4941 Agree with your last statement. But the idea that you could cook with microwaves of the right frequency, and also use them to disinfect clothing, is of German origin.

I thought it was a good explanation. Maybe because I'm not American :P

Nether is the cavity magnetron

@@Kj16V I'm American, I got it after one viewing.

This video gave me an understanding from a theoretical perspective. Is there something incorrect about their explanation?

Them Americans were not able to think outside the box. Thatk God they got better with time.

funny enough, the magnetron needs high voltage to work, which is generated using a transformer

Just imagine a body spining inside a coffin

you mean they party in their graves , since its a compliment for them

How much rpm do they spin at?

@@Engineer9736 usually 220 m/s because its recommended by the regulatory body of the european union.

*British

Of course it is. "Ilmu Rekayasa" is basically the Bahasa-translated videos and voices version of the "Learning Engineering" channel.

snitches get stitches

Yea, that was an odd comment.

Imagine americans opening an avocado

@Pavor in America we were taught it was the Jews. Go figure haha

​@@zealobiron I understand the issue was more economics for more resources (natural) and Germanification (some German work propaganda) of all of Europe and I guess the World since they were into Eugenics. Don't forget wasn't Hitler only... there were other Marxist with a range of Socialist Agendas with Franco, Mussolini and others. Jew's were the scapegoat and were also an issue with a cycle in basically jobs leaving the country and going east and even like now days to China... though I think then more like Eastern Europe and Middle East more-so... maybe Africa also. Figure Italy was developing Africa still, France was also and Spain and Portugal were still vested in South America. Technically, there are other Vacuum and Gas Tube "Tron" devices with the U.S., Great Britain, Germany and the Soviet Union leading developments regarding the specific ones. The Cavity Magnetron happened to be a scaled down system compared to the others since the others like cyclotrons and klystrons were huge. Eh, like most science, technology, math and engineering... there are subjects with subject matter experts and I'm sure there was a learning curve at first. Interesting how each side in WW2 would slowly advance their technologies so to not want the others to find out and use. I wonder what wasn't disclosed to this day? Solid State technology came out more at this era as well as more advanced logic methods also leading into transistor computers. kzfaq.info/get/bejne/fbBzeZCGy8fUpWw.html There are other episodes worth searching for or finding from your library and watching.

Well, that's true

Cellphone communications use microwaves, the only difference would be the amount of power. You really don't want to stand in front of a microwave beam of over 1000 watts of power, it wouldn't end well for you. Anything in the range of 300MHz and 300GHz are microwaves, under 300MHz is radio and above 300GHz is IR, visible light and all the way up to gamma rays. Just don't fuck around with microwave over magnetrons, or any other high power device lol.

It has so much content. To learn it , direcly find a microwaves theory textbook.

You can't use transistors to switch in literally gigahertz

@@worldofelectricity4038 but some transitor produce THz waves with high power Eg: www.techexplorist.com/nanodevice-operates-10-times-faster-todays-fastest-transistors/31090/

@@ytrew9717 Explaining better his answer, you cant have high power transistors (usually mosfets) that have high switching frequencies. Usually, they are restricted to about 100kHz ceiling, due to loses in switching efficiency.

@@betolee4292 that makes sense, the link I provided above says transistor could do it., but don't talk about efficiency.

@@ytrew9717 Yeah, in signal transistors the time to charge the transistor´s gate is very low, so it can work in these frequencies. For high-power electronics, transistors have high gate capacitance that doesn't allow efficient fast switching. This is one of the reasons that valved electronics music stuff is still used today and is far better than transistors.

Basically 0:53, it's just oscillations of magnetic energy.

Wireless charger works on the principle of mutal induction

Two coils close together can transmit electricity via induction! Magnetic waves produce current when they cross a conductor.

Look up some video about wireless lighting LEDs with coils. The LED will light as both coils (coil with power and coil with LED) get into effective range

same as 1:1 transformer, two isolated coils. one powers the another

Well not only the microwave oven, also the Lineal accelerator which is whitely used in many areas especially in medical for radiotherapy systems.

@@KingOf7oooms is it whitely used in many areas? wow!

Divad Ignawm sorry it is a typo mistake, obviously I meant widely :)