How Microwave Oven Works ? - Resonant Cavity

High quality PCB prototypes: www.pcbway.com
🔥In a previous video we've learned how to generate microwaves using the magnetron. Now we see how these microwaves could heat up the food. Learn how a microwave oven works.
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00:00 Intro
01:54 Electric Field
02:35 Water Molecule
04:23 Resonant cavity
05:15 Static Wave
08:21 Rotating Plate
09:11 Metalic Mesh
10:49 Thank You
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#electronics
#learning
#teardown

[@ELECTRONOOBS]

Join my Arduino Course (Spanish): bit.ly/2JY8icE My Tools: bit.ly/3uv8bc3 Help me on Patreon: www.patreon.com/ELECTRONOOBS

[@technicalgaming7056]

Sir can you please help me out with my project? My project is with gsm module sim 800l and it's not sending sms . But when I am giving power to it then it connected to the network but when I run my code it doesn't send the sms. The code is also correct.

[@aidansmith1549]

Hi I have a question on your previous esp32 nes console project. every time i compile the code I get an error that i need to #include "P:\1a KZbin videos tercero/ESP32 Nintendo/NesCat-main/src/hid_server/hid_server.h" and that the compilation is terminated and it says there is no such file or directory even though when I go into the files I can find the his server h file. Other people are also having this problem so please help me out I really want to finish this project

[@IrishRanter]

I have question 🙋🏻‍♂️. If I increase the voltage shortening the wave length turning the 2.4ghz to 4.8 or higher will it still be a microwave?

[@TrungNguyen-qi7rj]

Amazing video. If only my professors were this good at explaining things to me when I was in school, I might have been the second Einstein!

[@omarel-ghezawi6466]

Excellent is the word. Great effort. Thank you

[@feijocas]

Very nice explanation. Concise and precise 👌.Thank you for creating the video

[@henrygoss-custard3364]

Very well done video!

[@basureroargentina8012]

wrong description, the resonant cavity is in the magnetro itself, not in the cage,. Obviously there are microwave in all directions inside the oven cage but not in a resonant form. All the video is misunderstandingly wrong.

[@nikorahmad]

This is awesome man.. Top notch 👍👍

[@payamesfahanyvarnosfaderany]

Complicated video of perfect channel🥇 means people will wait for more complicated videos from perfect channel 😎

[@mayorofchemistry]

This is a cool explanation video. However, I'd like to point out that the microwaves do not directly affect the vibrational states of water molecules. Instead, the rotational energy states are excited, then this dissipates into the vibrational energy states.

[@mauricioweber8879]

Great explanation!

[@seshachary5580]

VERY EDUCATIVE. tHANK YOU

[@FabishKipngeno-mg9mx]

that was an Awesome video I have learnt sth For sure

[@moseskioko1299]

Thanks for these video

[@allezvenga7617]

Thanks for your sharing

[@watipasokamanga8908]

Nice Animations. What software are you using for animations?

[@TojTekSpeaks]

Im curious tooo

[@ezzeldin101]

Excellent video

[@daveaa2]

What a great explanation, thank you!

[@nikkoworld]

hi, I would like to build a machine with two magnetrons in parallel to kill larvae inside the wooden floor. In your opinion, at what distance should I mount the two emitters and above all should they be parallel or have an angle facing the floor. I'm undecided on how to design the cell. Can you give me some ideas? Thank you

[@piiumlkj6497]

How efficient is this process ? What if we compared it to resistive heating ?

[@ELECTRONOOBS]

Resistive heating heats the exterior more and the interior of the food will slowly get cooked. So depends on what food you want to heat up.

[@ralanham76]

It seems very efficient. Try a glass of water for ? A small glass takes one or two minutes to heat up at 1,000 Watts/h that's 33 Watts for 2 minutes. Now if use the stove it would take about the same time, but you're using four times the energy. Mainly because the energy is not focused. If you're looking for options to not microwave but be efficient. Inductive cooktops are very good because they focus all the energy in the bottom of the pan and thus the food heats up quickly without wasting energy. BTW It's hard to cook eggs on induction cooktop because they cook too fast.

[@technicalgaming7056]

Sir can you please help me out with my project? My project is with gsm module sim 800l and it's not sending sms . But when I am giving power to it then it connected to the network but when I run my code it doesn't send the sms😣. The code is also correct. But don't know how to fix it and in serial monitor it says AT+CMGS="number" . Now please help me out sir 😖.

[@bogdan546]

Very good explanation, thank you

[@RAJTECHTAMIL]

I need mcp4022 digital potentiometer with arduino uno how to control. Please argent

[@Unbreaded452]

Great video. Microwave is good in theory, but if you stick a spectrum analyzer in the room with one you’ll find out that manufacturing those constraints is completely inconsistent. This is why they have been dropping the power on microwaves for the last few decades. Additionally, many of you will remember when they used traveling waves…you had a shelf in the microwave no turn table. Was not safe at all.

[@ianhosier4042]

Does that pcbway website have a means to scan or take a photo of a hand drawn schematic? Also how does it know what sizes the components are? I want to get into this but no one has addressed these questions. I current hand make my own boards and obviously have the parts to hand so i know where to drill the holes.

[@jaredjones6570]

As far as I'm aware, you have to upload the schematic in a digital form (.gerber file) designed in CAD such as KiCAD.

[@PhG1961]

Awesome Sunday afternoon entertainment!

[@roykirich]

Very educative, Why is it advised not to place metal objects inside?

[@omermagen824]

Much like how the electromagnetic waves wiggle the water molecules, it can also wiggle the electrons in conductive metals. Moving electrons = electricity. The real problem occurs when that electricity is concenentrated enough to create sparks. Sparks ionize the air, creating plasma. Plasma is also conductive enough to catch the microwaves and that means that the little spark from the tip of the fork can become a seriously large and hot plasma ball that could melt stuff.

[@patvickers8189]

I got an idea for a cool microwave Short! Quick and easy. Take a grape or better yet, three or four of different sizes. Cut them almost in half. Be sure to leave a tiny bit of the skin so the halves will hinge. You just created loop dipole antennas at near the resonate frequency or a harmonic of the microwave. Fire up the microwave and literally watch the fireworks! As each half is energized, the alternating current between each half Sparks! Enjoy!

[@styrishrodrigues]

Interesting video ❤

[@kaancelik2053]

Hi sir,Can you share ESC V3 code and schematic,please? thank you sir

[@simonchilli2088]

Well there's a thing. I always thought the technology was developed for the space program. I didn't know it was second world war. Thanx for the video.

[@EducationJHC]

Then why we can't use only elctric wave instead of electromagnetic wave

[@nepaliman5716]

🎉🎉🎉

[@ChemEacademy]

🤩🤩🤩🤩🤩

[@oussamathedjfreeman]

Make the same video but with dual magnetron microwave oven wich is used 8n comercial oven

[@mdshohag-pc1gv]

Hello sir can you make rc helicopter 3 axis flight controller with arduino...please 😊

[@robertk9307]

Can 2.45GHz microwave interfere with electronics, hypothetically speaking with drones flying over my friend property?

[@dtibor5903]

Not likely

[@robertk9307]

So how does drone guns works?

[@ELECTRONOOBS]

Waves are trapped inside of the oven, so no!

[@robertk9307]

Let assume someone removed magnetron from microwave mounted on long pole and pointed toward flying nusence;)

[@ELECTRONOOBS]

@@robertk9307 that would probably fry the drone circuits. Is very dangerous! Don't do it

[@ralanham76]

Also if put metal in microwave it gets VERY HOT.

[@akifozturk9492]

what do you use for the make animations?

[@ELECTRONOOBS]

After effects

[@hackdroid8222]

waiting for laser machine

[@sammin5764]

🌟🌷🌟🌷🌟🌷🌟🌷🌟🌷

[@Ravenor907]

It would have been great to hear how the magnetron actually works, it's actually fascinating, imagine how a whistle works and instead of air substitute it with electrons.

[@dtibor5903]

You can heat up or burn many materials with microwaves, water has nothing to do with the heating process. The explanation is simple: the food acts as an RF load. It's almost a pure resistive load. You can heat up food with completely other frequencies too.

[@SaccoBelmonte]

Microwaves ovens were invented because of Chocolate.

[@dtibor5903]

No, the food does not need to contain water to heat up, the explanation is wrong.

[@markwerley6965]

Microwaves heat up polar molecules, and in most foods that means water. There can be other polar molecules, such as fats, in foods and those are heated up too. So his explanation is not wrong, perhaps incomplete, but not wrong.

[@ELECTRONOOBS]

Sorry if I miss explained. All polar molecules but water is the main ingredient of all foods and is a very good polar molecule affected very much by the electrical field.

[@dtibor5903]

@@markwerley6965 look, the whole microwave thing is just matter of RF transparency. Food and water is mostly opaque for microwaves, so they absorb energy. Many other materials and glass types are transparent for microwaves, so they heat up way less. Some are reflective, like regular iron (for ex food cans). Similar happens for other RF bands, some materials are opaque, some are tranparent, some are reflective. Those opaque will absorb energy and basically they reemit the energy in the infrared spectrum.

[@markwerley6965]

​@@dtibor5903 sure, and polar molecules couple with the RF energy and are thus not transparent to it. But if you freeze water the molecules are locked in and can't rotate - ice is very nearly transparent to microwaves. It's not until it starts to melt that it couples strongly and real heating can begin.

[@linuxranch]

In addition to the rotating plate there is a "propeller" type "fan" that rotates in the top of the cavity. This rotating reflector stirs the microwave energy, providing coverage over more of the cavity. Given the varying "load" provided by the rotating food, I think it is unlikely that you actually get standing waves in the cavity. To test your theory, place a number of neon indicator bulbs (not connected to any power source) mounted on a frame of dry wooden popsicle sticks. They will light in areas of high field. Once you have observed the "field" with no rotating load, add a cup of water, off center on the plate, and observe.