How do microwaves work? | Live Experiments (Ep 7) | Head Squeeze
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- Опубликовано: 16 сен 2024
- Jon Chase uses chocolate to explain how microwaves work.
Recipe
IMPORTANT: You will need one sober adult with a sense of scientific wonder....
What you need to get started is: A microwave, carboard and a large bar of segmented chocolate.
1. Take the revolving dish out from your microwave (It's important that you do this for the experiment to work).
2. Now cut a piece of cardboard to size, so that it fits the base of your microwave.
3. Break your bar of chocolate into 12-20 segments and spread them evenly on your piece of cardboard.
4. Heat the chocolate for 1 minute in an 800w microwave. You may have to adjust the times if your microwave is lower or higher than 800w (The key thing is that you don't let the choclate burn).
5. Now take the chocolate out from the microwave.
6. Use your finger to press down on the pieces of chocolate and you will notice that some pieces are solid and some have melted. This is because microwaves do not travel from left to right but go up and down. This is why we use a revolving dish to evenly heat our food.
Live Experiments: Our resident science demo thrill-seekers will give the RUclips audience their big science treat each week with an experiment where you can find out how to make food dance, power a light bulb with household objects and create mega smoke rings!
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quite hilarious, but then again the entire crew of headsqueeze is funny.
Moar Jon!
Actually, just more HeadSqueeze, but Jon is excellent.
Great show! Everything was explained in a very simplistic form! :)
Nothing goes better than dubstep and learning.
dis man is awesome and the best scientist i've ever seen.
A lot of words sound a bit better if 'age' is added on the end
Very sick colour, that chocolate ( like orange ). XD
This channel is going to be BIG!!!
I agree that lighting guy was brilliant. :P
You could play with this a bit more and figure out roughly the speed of light. This is done by measuring the wavelength (marshmallows on plate works best, and just as good to eat) and multiplying it by the frequency (typically written on the back of the microwave, usually in the S-band).
"Queue dusbtep" was the highlight of this video.
A low frequency sound you say? Sound waves are longitudinal, compression waves. Microwaves are transverse waves, like the rope. Also the frequency of a microwave is very very high.. I've only just got the hang of waves recently, they're pretty abstract as physics goes.
The heating is caused by the molecules of water in the food rotating in the electric field of the microwave causing friction between the molecules.
You need a certain amount of energy to heat one cup of coffee. When you put two cups in the microwave for the same length of time as one cup there is only enough energy to heat one cup of coffee so they have to share this energy and as a result, they don't get as hot.
1. "Yo got trolled", I don't think you know what trolling is.
2. Sound waves and Electromagnet radiation waves are completely different.
3. You were correct on the other parts so at
least you know (and will know) more than the average person on the study of wave motion, there is hope for this generation yet.
James for president,i mean king
There's something so refreshing about a british black guy
wat
Waves in the cable need cables to take place. What is needed for microwave to take place?
I like John.
So why dont we have a suspended rack or something in the microwave to take advantage of the energy at the top of the standing wave?
He should be in more videos!
I've always asked this question..
Yes and Electromagnetic radiation propagates throughout vacuums and other mediums as a wave (sometimes particle, wave-particle duality etc).
Microwaves are a type of EMR.
So it is radiation and a wave :)
node = no-displacement.
That's how I learnt it.
"Meltage" works for me :)
Man you are great :D
Is it possible to make the microwave use waves of varying wavelengths, therefore making the "spinner" useless?
this mans head is disproportionately small
also he sounds like Ali-A
I like this guy :)
Okay, that is great, but what I don't understand yet, is why, when we put for exemple 2 cups of coffe, they aren't as hot as when we put juste one (with the same heating time)?. If it turn, cups go trought each waves isn't it ?
If I am correct, the reason why that is is that both cups are trying to "absorb" the same energy, so the waves weaken when they are both taking in the same amount of energy. When only one cup is in a microwave, that cup gets to absorb all the waves of energy.
Thats why only part of my brain is fried from using a cellphone. Its a hassle to "rotate" the thing and stay connected. D'oh... could use the speakerphone I guess.
I know a cool word for melted. Defrosted.
The engineering guy did it better and quicker too :)
But thanks for the video!
there's points of high meltage and low one.
wait, so it IS a word?
energy is made from a voltage applied by electricity.
I'm sorry but this video only talks about waves, it doesn't say how the actual microwave works. I heard nothing about the copper inside material, the filament which emits electrons, the magnetron which is at 915 MHz.There is more to a microwave than what I mentioned, and much more to do with it than waves.
Heavy
MOAR! LOTS OF LOVE FROM AUSTRALIA. (no homo)
3:32 did he really say "Dirty"? What the hell of an accent is that?!
Molten.That's the word.
Your a physicist and you are calling it a microwave ... no its a microwave oven microwaves are the waves in a microwave oven, my physics teacher would flip out ! :L good video though
energy distribution
it's a pure london accent
Liquidizing yo
mine doesnt spin and works though?
i thought that was the dub step :O.
I prefer "meltitudity."
Meltedededededededed
lol
Who is jon chase?
Microwaves use radiation.
This is not BBC it’s bbc.
My IT degree explained it better.
So how didi this affect my hamster? He seemed pretty cooked all over to be honest. All over the inside of the microwave