Microwave Oven | How does it work?

Microwave ovens have an interesting physics behind them. Let's explore the complete physics behind the microwave ovens in this video.

[mananmatharu]

This is so interesting when you're not "forced" to learn it

[rommelthevendingmachine]

Fun fact, it was not a chocolate bar that melted in his pocket, it was actually a nut bar. Whereas chocolate often melts in your pocket anyway, nut bars don’t - that’s how he realised that something weird was going on

[knvcsg]

It's kinda unbelievable that friction exists at a molecular level. Really, interesting way of explaining. Thanks for that.

[caitanyabhavadas]

Thank you for not having cheesy background music in the video. It can be such a distraction. Loved the video!

[dhanushsai]

Me suspecting that chocolate with water molecules started to melt
But the man with 70% water
You got the point lollllololololool

[mixtermuxter]

You should have explained the Mesh on the window.
It is specifically designed so the electromagnetic wave can't get out.
It does that, by having holes of a small enough size.
(I believe smaller than 1/4 of the wavelength or something like that)

[CHAOS]

My older microwave malfunctioned once and didn't turn off when I opened the door. My hand closest the microwave felt like the hair was standing up. Didn't hurt or anything. I turned it off after a couple seconds I realized what was happening. Years later they had to cut off my hand due to massive deformities. Kidding.. nothing happened.

[chitsi]

Did anyone notice 'Amul Cheese' at 6:00? That is from India :)

[zhaoyuanlow]

Im still 12 i havent learn untill that hard. So i dont understand what you explain but im still intrested

[skc]

scientist- I found it accidentally!

me- Yeah sure dude. You definitely brought a chocolate bar in your lab coat by *accident* .

[sashabraus]

"please have a look at these two electromagnetic waves" How nice 🙂

[viktortodosijevic]

The cooking from the inside part just isn't true. The strength of the wave inside the food is of function e^-x and the more inside you are the weaker it is. The inside gets heated by the little wave strength that is there and by the heat passing from the outside to the inside. Put anything relatively large in the microwave and cut it in half after heating it. You will see that its colder on the inside. That statement really killed the video for me...

[redleader]

This video explains exactly why I prefer my older microwave. Instead of a rotating plate and a stationary waveguide on the side, mine has a stationary plate and a spinning waveguide above the food chamber, spun by air from the exhaust fan. It distributes microwaves more evenly. Much simpler and far more efficient, and less parts that can break or wear out.

[parveshvu]

But one big question still remains, whether oven cooked food is safe for human consumption or not?

[barackeli]

If I had lesics at high school it would make my physics course awesome, and now I'm learning physics more easily than I did in my whole highschool .

[NEKRATOS]

This is how things should be taught! One of the best, most informative, easy-to-understand videos I have ever seen.

[Tim-Kaa]

Good video. You should've covered the wavelength size of the 2.45 ghz vs cell size of the metal seethrough mesh of the front door, that would be a good explanation why microwaves cannot penetrate that mesh. Maybe even cover induced harmonics in it too just for fun.

[willowkepler]

I was heating hotdogs in the microwave a while back, and the first time they came out still cold (this one doesn't have a rotating plate). I put them back in, but this time rotating the plate 90°. Left them in for the same amount of time, and bam. Steaming hot. I was so baffled about this ever since. Now I know it had to do with hot spots from the micro waves. Thank you.

[mibrahim]

one more thing to add ..
The frequency of the microwave is close to the natural frequency of water which leads to resonance ..
it is not the same as the natural frequency of water because in this case the surface of food would burn quickly before the inside getting cooked ..

please correct me if there's any mistake..

[traelmendoza]

"EVEN COOKING" my man's apparently has never had a Hot plate with cold pizza rolls