How to Boil Water Using Magnets
HTML-код
- Опубликовано: 3 май 2019
- The rotation of magnets with different poles creates an alternating magnetic field. In aluminum, this creates an eddy current that heats it up. This is similar to the operation of an induction cooker, only there an alternating field is created electronically with a high frequency of 20-100 kHz. By the way, the magnets are kept cold!
en.wikipedia.org/wiki/Eddy_cu...
en.wikipedia.org/wiki/Inducti...
music: Glen Canyon 
Хобби
(28 Nov 2021) I added descriptions to the video in 56 languages.
---------------------------
Boiling water with magnets. New edition - ruclips.net/video/7wZ8DWu-sw8/видео.html
For those who want to repeat the experiment. For faster heating plays the role of RPM motor and the number of magnets and the radius of the disk. More radius, more magnets, more RPM = more frequency change of the magnetic field N / S. Frequency affects the rate of heating. But if the motor is low-power and the aluminum / copper piece is large and thick, then this piece will brake the magnets and the RPM will decrease. Therefore, choose a balance - motor power & volume of water to heat. If the motor power is insufficient, you can wait a very long time. :)
Fried eggs with a taste of a magnetic field :)
ruclips.net/video/ar0X2Ai1ahQ/видео.html
great
Probably need to add that I cut off the bottom of the glass of course. I did not show it in the video, I thought it was understandable.
@@grain-diose i think it will be a good idea to add thermal insulation to the disk it will be faster
@@smartcam3164 This is not necessary, because the magnets are at the bottom, and the heat goes up. And between the magnets and aluminum there is an air gap. I touched the magnets with my hand after the water boiled, it is absolutely cold.
I heard about the theory of this in physics class 35 years ago but this is the first time I have ever seen it. Thank you sir for your outstanding effort.
Using magnetic induction with a spinning motor is an inefficient way to boil water. A lot of electric energy is lost as waste heat in the motor, air turbulence and noise. Using a heating coil is more efficient. However, the most efficient way to heat water is using a heat pump. Heat pumps can achieve more than 100 % efficiency in producing heat.
@@simon6071 How can it (heat pump) be more than 100% efficient? Does that mean if I feed it with 10 joules of energy it can produce 700 joules for example?
@@simon6071 ерунда) никакой тепловой насос не даст более 100% ) единственный способ получить КПД больше единицы это магнитная индукция)
ruclips.net/video/V2aOZYgRk9c/видео.html
ruclips.net/video/5AXgVqAWozU/видео.html
this is a similar principle like a microwave oven though. Just that they don’t spin the magnet. Instead they use electromagnets with alternating currents to switch the direction of the magnetic field.
@@buttonup3522
Heat pump does produce more heat than that can be produced by the electricity supplied to the heat pump. However, the extra heat does not come from the electricity supply. The extra heat comes from the heat in the air after the heat has been concentrated by compression.
A good little demo of uses of eddy currents -- although uneconomic in terms of boiling water. BUT that is the point because we use quite big motors in many things and waste the potential of eddy currents produced in the process of motors doing a 'main job'.
This is not to be confused with induction appliances and you make that clear. Excellent.
amazing, these are things we've only learned from independent media congratulations on sharing your knowledge
That is a rather interesting alternating magnetic field design there! LOL! Though likely quite inefficient it obviously is effective. Nice work. 😀
I knew why it would heat before you started but you displayed it well. You always stir my interest in making things myself. Thanks !
If the purpose is simply to boil water, a microwave or nichrome wire will be more useful.
Come on all you nay sayers! This is a great teaching tool for introducing new concepts to young children on magnetism .
Thank you so much for this informative video! I’m sure those who live off the grid will make good use of this principle
Perhaps a windmill/ propeller turning an induction heater to heat water?
Sounds great!
Outstanding my guy. Looks great 🔥
I met Eddy Current once, nice fellow, very misunderstood, and a little bipolar. :)
:)))
that was spot on! Finest Joke ever :)
Wow.,😂😂😂
Ha ha couldnt resist it eh?
wonder if you could use a magnet to power the motor
l just sat here and watched water boil, l need to get out more
debeeriz...but it's scary out there...I've been told.
The blinking lights?
Is 2 leds in opposite directions so each one comes on in one direction of current flow current direction depend on magnet polarity
debeeriz, yer living the dream
Mee too 😂 😂😂
Exactly what I knew would happen beautiful visual explanation of eddy currents in non ferrous metal
Very interesting. I’ll have to try this if I can get the magnets. Thanks for your video.
This really is amazing. You've discovered the cure for insomnia.
:)))
Just saw , subscribed, and enjoyed your video. While some will be bored with the whole video, or seeing it as child's play, it is one of the best videos I've seen (clean from clutter which makes people think you're hiding something), clean and non controversial. It clearly displayed science and ingenuity at work.
I've seen other channels that similarly boil water that way but yours isn't hiding anything but rather, conveys to the viewer how to boil water with or without electricity : without- by attaching the wheel to a bicycle chain and powered that way if you're in the wild, need a cup of coffee, and your device boils the water necessary for a great day away from the hustle. In my opinion, a super video.
Thank you!
Best commitment in here. 🤜🤛😊
Woow , what an idea to explain eddy currents generation 👌 I will use your such idea to explain such eddy current effect to my child and also heating effect through it 👍
Thanks a lot for your great idea with such simple arrangements 🙏😀😀😀
Thanks! I've been wondering how induction heating was made.
Fyi for people reading this: Normally one uses switching currents in a copper coil to shift the magnet fields
Great video! Gave a very good understanding of the concept. Thanks.
Really nice demonstration of induction heating. I enjoyed that.
I love it when you can actually hear the magnets taking on the load slow down and pulse in rotation.
I have a bicycle trainer rig that works like that: Wheel spins a shaft, shaft has a aluminum plate that spins between two magnet plates, the aluminum plates heats up while spinning, what also happens is that action creates a load making the making the bike harder to pedal. That setup includes a variable load lever to adjust pedaling for easier or harder. It does that by rotating one of the magnet plates a few degrees in relation to the other magnet plate. I assume that alters the N-S relationships of the magnets on each side. And I can say that in a fairly short time the alum plate become too hot to touch.
What wasn't covered here is the loading aspect. Yes there may be better ways to heat water (this is just a experiment after all) but the motor was being used here to simply create motion for the experiment. This principle is used for a lot of motion control or loading/braking. Slowing things down through regeneration (F1 racing, hybrid cars). Slowing electro-mechanical things down that drop/fall when the motor stops running, which then becomes a generator being pushed by the load, running the generated electricity through load resistors that create heat.
You can see the water swirl in such a way that shows the paramagnetic properties of water. The magnetic vortex, per say, that is created is influencing the bubbles towards the center of the spinning disk. Awesome experiment.
@Blind Bob water is paramagnetic and is physically affected by strong magnetic fields regardless of your armchair scientist knowledge. Please shut up lol.
Fero
Yyyyiuouyyyuoiouyiyyiuiyyuyuiyyitu
*per se
Dude dude dude this is sooo seeing the trees for the forest. I saw this and did a Picard face palm...a double pfm! Thank you so much for sharing this! Why o why did I not think of trying this. Brilliant and well prepared film! Here's a thought, by placing the rings along the outer rim, the edge of the quarter as it were, one could place an aluminum holder up against the magnets, which could house the glass cup. This way, more field is captured by the larger mass of a cup holder that can surround the cup to a large extent. The extra mass of more aluminum, coupled with more surface area of aluminum to glass for heat transfer, more heat can transfer more rapidly. Great video
E' l'oggetto più geniale che io abbia mai visto per risolvere il riscaldamento. Ma sei stato proprio bravissimo. Veramente complimenti. Bravo bravo bravo. Bravissimo. Sei stato veramente sorprendente. Questo oggetto può risolvere acqua calda, cottura dei cibi, riscaldamento domestico ecc. Inoltre se lo attacchi ad un pannello solare ottieni tutto questo in modo del tutto gratuito. Sei un grande.
So much did a similar project but with frequency and had a reaction at boiling point 2:30 love your work keep it up mate
Cool, you've reinvented the induction cooktop. I like the sound.
this actually looks like an induction cooktop from eras before the digital and electromagnetic ages
or something from a world where energy waste is actually minimized
@@tiberionjraxiosn9493 lol but not before the electric motor. which is wasting energy to heat, I would hazard a guess that this method (In the video) is less efficient than a simple element heater boiling water, IE a typical electric kettle.
@@brycering5989 makes sense, but isn't it cool if someone in the past actually made this?
edit: assuming they used a different thing to spin the magnet disk with much less friction than usual
@sparky12x induction heater heat are not 100% transfered to the plate
@sparky12x nothing is 100% efficient it would defy the laws of physics
gave an upvote because dude had enough attention to detail to polish the edges of the thick aluminum disc underneath the glass!
That looked like a chromed part.
@@louistournas120 chromed part ....... pmsl wtf ?
@@leightonwestbury92 :
They make the part from iron and they apply a thin layer of chromium using electroplating technique.
Wow that is so cool to watch. I've just learned something today.
Gas flows are incredible, I can see the flow, thanks
You can boil water by having two spinning circular contra rotating plates that have raised studs. If they plates are in a few millimetre gap water will boil instantly through friction. The wheels can be hand powered by two people or geared. They've have these in the FDNY stations since the 1990s.
Link to an example?
I was a volunteer firefighter once and we used the stovetop.
In my area, I was thinking about windmills
One plate has magnets reversed every other
Congrats you've unfurled the secret of induction cook tops!
But instead using motor and magnet, induction heater uses alternating current
No. Induction cookers use AC and require ferro magnetic pans.
It is the amazment of simplicity this principle with Lenz law this was done.
@@samueladitya1729 yeah, but its same thing, motor is spinning magnets which alternates poles = heat
alternating current also alternates poles = heat
so yeah its same but different way
@Ssam ASMR a moving magnetic field induces an electric current in a copper wire that is within the moving field.
And if you put a spinning copper gyroscope on top of and at the center a large powerful neodymium magnet that is stationary, the gyroscope will never stop spinning
Very clever !! good presentation !! thanks Grain !
Brilliant demonstration, love it
Great! Now I can boil egg with my bicycle.
Cheers from Indonesia
.........
@@chaoticlife311..........?
Use motorcycle, even faster :)
@@georgewong324 That's a lot of wasted energy.
Everybody, I'll use bicycle because I need sport.
The best channel that share amazing important experiments
COOL!! Thanks for the demo :)
Excelente video, no sabia que se podia hacer asi :), saludos y gracias por compartir.
I’ve started doing research on the importance’s of frequencies and my thoughts led me here, very cool video and a great learning experiment for sure !!!
Keely, Holtz, Chladni
Haii broo this experiment is work properly??? & water is boil?? For what I am doing experiment in my collage mini project purpose pls tell me correctly (1 am a mechanical engineering student)
An AC electromagnet should also boil the water without moving parts. It's the eddy currents in the aluminum causing it to heat and boil the water. This is the same principal as an induction cook stove.
Like in a microwave oven :)
In a similar setup you would need something like twenty electromagnets with alternate polarity. The switching would imitate the rotation of the static magnet plate. No motor would be needed. This might save a lot of input power. An experiment with a steel cooking bottom would be very important. Ideally you would have let's say 12 x 6 Rows of electromagnets which have an angle of 30 degrees. Like the spokes of a wheel.
Thanks for sharing! My class will love it! :)
I knew a girl whose dad worked at timken roller bearing. He told how he warmed his ham and cheese sandwich on his machine while he worked... This is like the science project I thought of, when he said that. So cool.
This is basically how induction cooking works. Nice to see a construction model!
Something new to play with :)
Haii broo this experiment is work properly??? & water is boil?? For what I am doing experiment in my collage mini project purpose pls tell me correctly (1 am a mechanical engineering student)
Всего лишь поиграть
So you made an induction stove with actual magnets instead of an oscillating electromagnet. Neat.
Bem interessante, o problema é que está gastando eletricidade, se der pra fazer o esquema um esquema tipo roda de vento ou água, da até pra fazer um fogão ecológico. Top.
Yes. If he used a cycle for that
Achei estranho também, o momento em que ele passou a placa de alumínio, e ela se atraía pelo imã!!!
@@rodrigosilvasantos2284 todo mundo acha mas o q ignoram é que todo.metal e magnetico .. so q uns reagem.muito pouco como o aluminio q tem seu campo magnetico todo embaralhado dai so funciona em movimento ... pois se tentar encostar um ima gigante em uma placa de aluminio estacionada ele simplesmente cai
@@jhony6390 valeu colega, pela explicação!!!! Essa experiência é um misto de física e química!!!! E quem é leigo acaba ficando boiando!!!!!kkkkkk mas valeu!!! Abcs.....
Excelent demonstration!! Congratulations
Great demo of generating Eddy currents in a metal base to heat water. It is possible to build a high frequency induction unit using a coil of wire with a ceramic plate on top. The coil is fed by a powerful amplifier that is fed by a high frequency oscillator that the frequency and coil are resonant to each other. Then put a steel base pot on top and cook with it. Expensive to build, but is efficient if done right.
I like induction cooking. Only the pots get hot, and not the ceramic under them. The ceramic heats up by taking heat from the pot, and not from the induction coil below.
Now I know how to make pure oxygen, could come in handy
I use induction cooking all the time more efficient then convection plate
By the way, note that the bubbles do not just rise up, but first deflect to the left. Perhaps this is lens distortion, or a deviation in a magnetic field. Try it in a square container so you don't have a lens.
There are vibrations in the aluminum plate that are induced by the magnets.
@@NICEFINENEWROBOT Mechanical vibrations of the aluminum plate are not responsible for the heating. The time varying magnetic field induces a circulating voltage, called emf (Faraday´s law) which in turn moves the free electrons in circles inside the aluminum plate. So there is a circulating current known as Eddy current. The dissipated heat (power P) depends on the electrical resistance R of the plate:
P = I*I*R, which is partially absorbed by the water and then it is heated.
@@carlosvazquez4401 Understood, but I tried to locate the reason for the deflection of the bubbles.
thats just a convection current, its how heat moves in a container
@@NICEFINENEWROBOT convection currents
Ouaw! Cool. Merci from Montreal, Canada.
Fantastic! Absolutely fantastic! 👏👏👏👏👏👏👏 Thanks for sharing.
We need more people like you in this world.. I’m very impressed,.
Thank you!
? Magnetic induction is not new. This, while a pretty neat experiment to demonstrate it, is not a practical solution to boiling water. Not by a long, long shot.
@@uni-byte why lol
Two things would have helped the time to boil: Cover the container (basic cooking technique), and insulate the metal disk so the wind from the magnet disk doesn’t cool it.
I’d power this with a windmill: A spinning magnet disk might be handy for more than cooking, and I can see swapping what’s in the field as needed. Charging batteries between meals, for example.
Yeah dude
So if you can heat up sand with a solar panel
At night you can add water and get energy
And some Heat
I live in Texas and our governor like fkd up something with the electricity
Soo.. the Aluminium under the cup was heating the water, not the magnet was heating the water.
In a microwave the electrons agitate the water, so the water rubbes, and create heat.
i just realize that im sitting here watching water boil.
I have a video you can watch after this. I use sunlight to grow grass.. After that, i use air to dry paint. Ohhh Science
Watched this last night, realized this morning after thinking about it that you just made a "mechanical induction heater".
Motor is not just mechanical
Looks to be a efficient one. I thought the same. Keep congnitive thinking. The world is not thinking enought.its in the face but not mentioning it. Weird right! Lol
@Marko yep
Not efficient at all. Use the electric power driving the motor through some nichrome wire. That is 100% efficient.
Heater?Did the temperature rise? lol
Esse experimento foi o melhor que eu vi até o momento no RUclips, parabéns!
Really??? It’s old hat!!!
Спасибо за наглядный пример.
Сам хотел провести такой эксперимент. 👍
Как думаешь, реально ли запитать этот двигатель от самого себя, или всё таки будут потери? Склоняюсь что он не сможет создать достаточную мощность.
@@user-js9sx7pm9m Если только анально-орально... а иначе бестолку
@@user-xg2tv2qc1l ну я двоечником был, но больше склонен к тому, что работать не будет, не у одного же меня такие мысли дурные в голове проскакивают, что через редуктора запитывать и прочее, просто мне интереснее смотреть как другие страдают херью, чем самому на неё время и деньги тратить.
@@user-js9sx7pm9m, не получится, теловые потери слишком большие будут. Даже если обмотки двигателя будут из суперпроводника - не получится.
Добавлю - через редуктор можно иили прибавить обороты и потерят в крутящем моменте или на оборот, однако любой узел внесёт потери, если тот не идеален.
@@normusfull4185 ясно, спасибо за исчёрпывающий ответ, лучшее что слышал. Доходчиво.
Michael Faraday and James Joule, both must be rolling in their graves. Brilliant.
dw, im here from the future, year is 2020 and corona virus keeps humanity indoors.
I know ur past self would never belive it lol.
@@Sanguen666 And Flu was completely eradicated lol!
The currents of Foucault.
@@Sanguen666 Corona virus did nothing. Politicians did it.
...but not.
It's a generator with a shorted transformer.
Same as an induction cooktop, only less efficient.
Très impressionnant 😱
Merci pour ce partage scientifique 😉
Interesante experimento... muy didáctico... Saludos desde Lima - Perú
Physics are the same as an induction cooker! Cool demo
27kHz
@@cplenny4281 , maybe like 8 or 9khz.. 10 magnets are half a wave each.. The motor is probably 1760 rpm AC motor.
Why do I find magnets so attractive? It's a question I'll have to iron out.
n o
@@deez747 nitrous oxide? Is that the answer?
n o
Because it does things that you can't see. That's cool.
@@robinhooper7702 *hot
Thank you for your post 😊
I have an idea that this could be a great use for. I just need to do some modifications, and this could change the way we do things. Thanks !
Wow !! Thanks !!
NB : strange to see now, that you could heat your water using the same wheel, coupled to a wind rotor through a belt... much faster than with a Joule heat device ?
Especially in a grid down situation its a hell of alot easier to start a fire than it is to spin a motor with a magnetic rotor to boil water.
А мотор без сети руками крутить?
Fun science project to learn from but super impractical. Electric current is turned to an alternating magnetic field in the motor. That alternating magnetic field is turned into mechanical rotation of the stator. Than he turned the mechanical force into another alternating magnetic field to induce eddy current in the water. If you removed the stator and stuck the set up inside the motors external coil the same thing would have happened, or just create an induction coil to be powered from the outlit and skip all the rotation.
Pytanie czy energia użyta do silnika, który obraca magnesami jest mniejsza od standardowej grzałki elektrycznej, która była by w stanie zagotować taką samą ilość wody? Podejrzewam, że nie.
Silnik ma 60 W , jest to o wiele mniej niż grzałka w dowolnym czajniku, nawet 0.5 litra czajnik ma dużo więcej ok 400 W
Great demonstrations! Well done and good video.
Did the magnets on the spinning disk also feel warm afterwards?
No, the magnets are absolutely cold.
Магниты должны были нагреться совсем немного из-за тех же вихревых токов что и подложка из алминия, но из-за движения остыли.
I believe it's heating the water by induction. You can also do this with the wireless charger but it's not as awesome as your experiment.
It's the eddy current that causes it.
Thank you for the information.
Wow, something more interesting than watching paint dry
Well the mysterious Peter Davey's "ultrasonic boiler" still beats this. 😄
But still thumbs up for the innovative approach. 🖒
Another of your very interesting and well done demonstrations .
Have you tried putting the aluminum slug inside the glass or a beaker?
You can find many ways to make eddy currents heat water or something else. I just tried to show it more clearly and spectacularly.
Russian blogger Igor Beletsky did it even more effectively and with humor. He fried scrambled eggs, tried it and said that it has a bright taste of eddy currents :) ruclips.net/video/ar0X2Ai1ahQ/видео.html
Grain, this is Amazing!
Nice video clip, keep it up, thank you for sharing :)
Thanks for sharin' another genius idea my good sir! Keep it up please ;)
This most certainly isnt genius. This is the more difficult way to make an induction cooktop stove... He is just doing it mechanically.
You know what this reminds me of? Remember that show on TV called Mr. Wizard?
I am old enough to remember it (71) LOL
I was born in the USSR and live in Moldova today, so I don’t know this show, but I found something on RUclips - ruclips.net/video/ckBoYRhwfCI/видео.html
Thank you for the video ... would be nice to see a calc of the efficiency of such a device
not a lot of people realize that the water molecule is positively, and negatively charged. and by flipping that molecule back and forth rapidly can cause molecular friction. hence forth the heat and steam. mike
YheA!!!
*it's good that I was awake*
This is really cool!. Have you meassured the efficiency of this set up, by calculating the energy consumed by the motor vs the energy provided to the water?
Thanks! No, I did not measure.
Apparently, a motor consumes much lesser energy than it is needed to boil the water.
@@PAAKISTAN невозможно,в подшипниках есть силы трения,а в индукционной плитке ничего не крутится-не трётся, соответственно КПД больше
@@user-hb6bm9bv5l sorry brother I can't get you. Write it in english plz
@@PAAKISTAN Google translate: impossible, there are friction forces in the bearings, and nothing spins in the induction hob, does not rub, respectively, the efficiency is higher
Cool job!
so fascinating i wish it had a narrator but i like it, not sure whats the metal gadget beneath, things we were never taught in school 50yrs ago. I wish to learn more about science but if you dont have the foundations, i sit here awe inspired but not understanding. Wish i was a kid again.
This is awesome. You would not want to put this on your countertop but it would use less energy to boil water then stove etc. You could make hot water heaters for your basement etc work with this and only use 5 amps of power to heat it.
So this would be in like a small box next to the tank with 2 pipes going into the box to be heated and convection would heat the bigger tank. Unless you used the total content of the large tank it would keep hot water.
Certainly the way we produce energy now is as inefficient as you can get for the sake of profit. At this point everyone should have solar panels at the least but the big energy companies waste more money fighting against it than they probably do to produce it... it's a dark secret that all things we use that a big corporation produces are a bigger RIP off then most people could even fathom
Changing magnetic flux creates eddy current, it then heats up due to the internal resistance of the metal plate
Cool experiment
Exactly.
Assuming the quanta of water boiled was 78.5 ml as ascertained by slowing the video down whereto observe the syringe gradations and scaled the dimensions of the water cylinder, then the efficiency of said system is 78.3 percent if the input via motor was 60 J/sec and the time for raising the water Temperature from 23.5 C to 98C over 180 seconds. Thanks for posting a wonderful video of excellent Informations. 🙂
Это потрясающе! Редко кому удается снизить КПД нагревательного прибора, но автору таки удалось! Теперь электроэнергия тратится не только на нагрев воды, но и на нагрев двигателя. Самое смешное, что вращающееся магнитное поле здесь генерируется дважды. Первый раз обмотками двигателя, второй раз фанеркой с магнитами. Это гениально, брависимо!
ПС. Жан Бернар Леон Фуко (1819-1868) аплодирует стоя.
It would've been nice to monitor the current in the motor and to see it increase when the aluminum/water was applied.
Replace the permanent magnets with electromagnets and you got yourself an induction heater
@@ethansgarage7627 true, this one is just mechanical
I have heard you can power the whole earth with magnets. I always found magnets fascinating.
Magnetism is not an energy but a force. You cannot extract energy from a magnet, but it is possible to transform the ways energy is wasted
Magnets are a key component for all large scale power generation on Earth. Nuclear, hydrocarbon, geothermal, hydro, water wheels etc. ALL use magnets to coerce electrons to move along a wire.
As a scientific example, the video is great!
That also explains why you need more different wires if you need to transfer or create a lot of current with magnets
More wires, more amps
As in the iron cores of the motors is made of a lot of different plates to evacuate the heat
No. to reduce eddy currents in the core.
The Faraday electro magnetic induction coffee maker.
Normally they are Foucault currents.
Very cool!
Bravo well done brother!
Putting a coil near the spinning magnets to light the LED's is exactly how a snowblower with heated handles and headlight works. magnets on the flywheel, coil going around it.
Magnetizing engine that was built right after World War II old man did tell me about 1 races and no does work it keeps from wearing out too and what do you want the truth or what magnetism does create things any you can say it could be destructive that's the way it is so here you are with a high output engine Verizon is perfect by demagnetizing but the problem is here by magnetizing you create heat energy and it does transfer from one place to the other like you know that's another whole new Avenue of understanding
uhhh not exactly... thats what we call a stater, in laymans terms its basically a generator or alternator, its now the snowblower gets its electricity to charge its battery(if it has one) and to power the ignition and any other electrical accessory like heated grips.
This could have easily boiled five or six cups of water in respective mountings raising the efficiency. Applied to a gas absorption air conditioner, the efficiency could be in the high 90th percentiles along with providing a supply of hot water.
An induction heater. Good experiment.
Haha! Mechanic induction oven/cooking plate! Cool!! :)