Electromagnets - How Do They Work?
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- Опубліковано 22 сер 2024
- Don't talk to a scientist - let Linus tell you how electromagnets work and why they're crucial in tons of different applications, from transportation to hard drives!
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Fucking magnets, how do they work?
Magic
Was that a icp reference?
ComradNemo I /k/new!
Packets go in, packets go out. You can't explain that.
+TheInvertedCube we'll do it(wan show) live!
"That phone in your back pocket"
* shows picture of front pocket *
"That phone in your back pocket"
There is no phone in my back pocket, I'm using it to watch this video
Hey LTT team!
I'm actually an electrical engineer dealing heavily in power delivery systems and electromagnetics. I agree and concur with everything that you have put out here, with one exception: Solar arrays(at least the type that you showed) actually generate electric potential in photo-voltaic cells physically inside of the blue-ish green-ish panels. That often time varying voltage is precisely stepped up in DC to the supply needed, which will then feed into an inverter that converts the DC voltage into the oscillating AC voltage that is fed into the grid. These types of generating stations feature no turbines or electromagnets, aside from the inductors used to smooth out current within the power electronics.
The source of confusion likely comes from the concept of solar farms that feature a wide array of mirrors that reflect sunlight and heat into a center spot. That reflected thermal energy is then used to boil water and turn a turbine, thus generating the AC voltage and fed into the grid.
Hope this helps someone out there understand solar power a little easier!
When your physic teacher is in the mood to be fun
Lol
he is called linus tech tips. search him up, he builds gaming pc's
so we all just watched this in science physics class and was surprised to see him because he taught you how to build a pc? or is it just me
me too
I am just now watching this for my adv science class lol
That's sad because this is actually a terrible explanation of how electromagnets/ emf works. it's just b.s. about fancy stuff done with it.
Hope y'all aren't paying for your education. Unless the money goes to UA-camrs your just blowing the middle man
I am literally watching this for science class rn
We just watched this video in science class today and I turned to my friend and went “OH MY GOD ITS LINUS ON FAST AS POSSIBLE” and you actually made class enjoyable for once. Keep doing what you guys do!
SAME
why no mention of speakers ??
good point
he skipped a lot of stuff, like electronic motors
+Saman Miran, I'm sure you mean ELECTRIC motor. It can be controlled via some logic chip/processor/controller so - electronically controlled, though.
Or microphones.
He didn't skip electric motors or car alternators. They're both the same exact thing as the power plant example.
never thought i would be given a video to watch by my teachers by Linus
Stan is that u?
Ethan Brand
No
Beckett?
@@mairaa hahaha Yh what’s up
I have never been so proud of Linus before :'( he finally went outside
lolololololololol
btw what's wrong with the beeps at 4:29 and 4:59? Damn Dennis
lol
yeah I though I was just crazy
EHHP
if you slow down the video, you will find a help message from Dennis :v
bro I watched this during my science class haha wtf
Yay... I can drop out of physics class now!
That first picture of a Maglev actually is a prototype Japanese train with a max speed of 603km/h, so a lot faster than the fastest speeds in the video. It's called the L0 Series.
I watched this in my science class and it killed me a little on the inside.
Linus is teaching me science. Never knew this was possible.
Not to be a dick, this was a very good video, but @ 1:08 the animation represents more accurately the state of polarisation of an EM wave than an inductor :P
Preach my brother!
Savage
***** as long as they're transversal
Not true, a water wave has no rotation of its polarisation and is transversal.
Ete64 meh, if you get that picky then it only represents the wave equation that was used by the animator, but in general even a linear state of polarisation is a particular case of elliptical polarisation
Do more science videos. I need it for school. I learn better from Linus
i used this in a school project thanks i always watch your vids keep it up
Dislike for not pointing out that it's the reason why we're all alive and not irradiated to extinction.
Tru lmao
The earth isn't an electromagnet, is it?
It is indeed, hot liquid metal flowing over the solid iron core induces an electromagnetic dynamo effect, which deflects and slows charged particles from the Sun. It's the reason why the polar regions have auroras from time to time. If it weren't for that, Earth would be as sterile as Mars, and have an atmosphere about as thin.
Thanks for that insight. Learn something new every day.
+aidanjt whut, so we need a whole lot of magnets to live on mars?
Great video for people to get an idea of how a lot of technology works. Good job!
Electric guitar pickups would have been a great reference as well. Since the pickups have magnetic coils with wraps of copper to expand upon the magnetic fields so the pickup can sense the vibration of the string.
Lol shaggy on the thumbnail. WHOOP WHOOP JUGGALOS N JUGGALETTES!
This was remarkably accurate for non-scientists. You even used the term "magnetic domain" correctly. Bravi, y'all.
Only correction I have: MRI (H-NMR) deliberately excites the hydrogen nuclei using a "probe" radio wave, the magnetic field is there so that the spins of the hydrogen nuclei are aligned to the external field. When the probe rf wave hits the hydrogen nucleus, it can impart enough energy for the spin of the nucleus to flip, after which it flips back and releases the same radio wave to the detector. What radio frequency will flip the nucleus's spin depends on the position of the hydrogen nucleus relative to other atoms in a molecule and in the environment. The magnets don't actually provide the necessary energy.
Dude that last rip on ICP was good. Gj
Glad you used the intro to do an ICP reference
Lol... I am right now sitting besides my gaming rig while watching this on my phone that almost exactly looks like the one in the video
The fact that Linus mentions ICP makes me love him 100x more XD
Linus is down with the juggalos? FUCK YEAH!
Please don't forget me if I lost in the sea of comments....
K
No. I love you. ❤️
rip in piss random utube commenter 2016-2016
Thanks Very much Linus..
I have a chapter of electromagnetism in my physics book...
and clearly I have seen many videos of some type like UV rays..
Keep it up these are awesome
Again Thanks for such videos.....
Also your Linus Tech Tips I am a great fan of it..
Linus is a juggalo? Had to work for that reference
Fun fact (I read it on the internet). It used to be called "Nuclear Magnetic Resonance Imaging" , but the technology was developed during the height of the "People who even know what nuclear means are evil" movement, so they dropped the "nuclear" part of the name so that hippies would calm down long enough to let doctors save their lives.
That's sad, but I can believe it. The unwarranted hate nuclear power, for example, gets even today (even though it's much cleaner than other traditional energy sources) makes it seem very likely to be true
+slipknotboy555 With the difference that you just manipulate the spins of the nucleus instead of splitting it. Which makes MRI scans much more harmless.^^
Yeah, I'm aware, just expanding on what he said about the people buying into the fear mongering around anything with the word "nuclear" in it
And the equally "scary" word Radiation to this day freaks some idiots into equating Microwave ovens with Hiroshima!
Haha, exactly! It really is some funny shit (but sad shit, too)
Now try explaining rare earth magnets in a way someone unfamiliar with quantum physics would understand.
is it just me or has everyone watched this in class
I am
Haha, keep showing us your love of the Juggalos, homie!
hey linus. can you do a Techquickie on a FDD (Floppy Disk Drive) thanks
If I use a DC power supply (AC to DC) plugged into a 15A wall outlet and the DC power supply is 12V 10A, will I get hammered if I touch the copper wires that are wrapped around the magnet? Is 10A too big? I planned to use this DC supply on a model RR to power lots of LED's and a handful of home-made electromagnets (simple design of copper wire wrapped around a threaded bolt). If I would get hammered by touching the copper wire, would the simple effort of wrapping the electromagnet with electrical tape solve the problem? Would the tape weaken the magnet's pull/strength Thanks!
1:57 right after Linus said that I heard a squeak from my hard drive.... D:
Thanks for the video now i understand and i subscribed!
I loved the title/thumbnail so much
hey linus can you make more videos that teachers can assign to their classes
The liquid helium cooled electromagnets inside of MRI machines... those things are AWESOME!!! Thankfully, after having had many MRIs as a kid, I am soooooo glad I did not know that the machine is cooled with liquid helium, but it is awesome to know I had a superconductive magnet around me, so.... it balances out?
nice to see some real science from linus! well done
Lmao that Insane Clown Posse joke made me nostalgic for the mid-2000s
I am going to cry, like this is the best video that I have seen about electrognets and is PERFECT for my physics proyect but I live in México and not all of my classmates understand english, and it doesn´t has subtitles in spanish and I can´t put them eithier...
hi guys, how does data on HDD look like? I mean you can see bits on DVD under SEM, but how does this compare to a HDD? are the tracks wider but the bit "length" is much shorter or what?
Sometimes it feels like he is talking to the audience like we are children.
Best Video on this ever
it enables the headphonezz of the coil driver variety to listen to the audio singal of dizz video!!
All kinds of drivers use magnets AFAIK.
Electrostatic...?
skypjuh Still an electromagnetic force :).
Nicktrance1 but no actual electromagnets involved!!
(honestly I just didn't want that one person to slap me around the ears with: "ACTUALLY my headphones are electr..they don't use electromagnets..because I am the one % and I'm special like that)
And you found me instead, so not much better I guess xD.
You can thank James Clerk Maxwell for realising the relationship between electricity and magnetism, thats where your maxwell gpu comes from.
He obviously advanced the field more than anyone, but Orsted was the first to realize a relationship between the two in 1820. Maxwell was so dang smart though, how he was able to deduce, just by looking at the four most important equations in EM and know something was missing because of charge conservation. Then add the displacement current term o.0
fair response, thanks for the reminder
Id argue Faraday advanced the field more than anyone. Electromagnets and even electricity itself was practically useless before Faraday build the first ever motor.
martinshoosterman Eh, he made some good observations. He didn't put forth any good models or anything. Which is kind of what is the beating heart of physics. Models so that we may make predictions. Maxwell probably wouldn't have got so far though without collaborating with Faraday though. I'd still have to put Maxwell 1st when it comes to EM. No doubt Faraday is a good second though, with I guess some argument for first :p.
Electric motor depends on passing electric current through coils that induces rebelling field with existing magnets to produces mechanical energy, while dynamos or electric generators are the opposite way around : by rotating existing coil current is induced in the coil, which means using mechanical energy from whatever source ( generally boiling water and using the steam to rotate generator blades so it starts with heat energy to get mechanical energy ) to produce current
Linus, peat is one power source, used in Skandinavia at least. In Finland its more competitive then wind, or solar.
hello if i installed games on my d drive and move this drive to a new pc, will the installed games on the d drive be playable in the new pc?
Can you make a video on the difference between Ethernet cables? Like cat6, cat7 stuff like that
Ye
That was one of the older videos
Magnets, how do they work? Magic
"Techquickie"? More like ScienceCookie.
Omg my Junior high science class linked this video for the class to watch
please can you make a video on what is workstation, how it operates and why is it required
my teacher told us to watch this and I was surprised when I saw linus tech tips lmao
I made one yesterday from a Duracell battery, iron pin and some copper wire. Its how I magnetize all of my screw drivers.
Linus ad on a Linus Video
" Marketing 100 "
I like the explanation a lot and wish I could use it with students in a classroom as a part of a longer investigation of electromagnetism. But I can't because, for whatever reason, you decided to add in that unnecessary expletive at the end. Pretty frustrating. You obviously put together a great video, why not ensure that it is suitable for student audiences by simply leaving out unneeded swearing?
whoop whoop, have channel super fun come to the gathering next year.
Next on techquickie - "GRAVITY: WTF? (yeah... we're running out of places to put ads on, we know... ok?)"
The guy in the thumbnail looks like tech n9ne with his painted mask lol
Actually, the Shanghai maglev train is limited to 430Kph due to power consumption issues, but it can go up to 500kph.
actually linus, before electricity comes to our house goes through a transformer to make it so it has a huge voltage and small current for less loss over distance and then it passes through a smaller transformer in your area to transform it into a usable voltage, in my country is 220-240V.
Magnets, its like magic.
it's an old meme sir, but it checks out.
Yo, just watched this in my electronics class
im watching it in my adv science class :)
Solar energy is not usually converted to mechanical energy, the generated DC current is converted to AC and into the required voltage using an inverter with a variable load to maintain peak efficiency.
However the step up transformers for overhead distribution and step down
for final connection to houses all use electro-magnetism to increase
and decrease to voltage respectively
So he is almost there
Thomas Grace Sure but no mechanical energy involved :).
Yeah, PV directly generates current. But solar concentrators do have a mechanical step.
sorry Linus PV cells do not use electro-magnetism, however the step up transformers for overhead distribution and step down for final connection to houses all use electro-magnetism to increase and decrease to voltage respectively
Solar energy doesn't require any mechanical energy to get converted into electric energy to produce electric current. The solar cells directly convert light into electricity by the photoelectric effect. The electricity produced can then be stored in batteries and can be converted into AC using an inverter or used directly as DC as required. Hence no electromagnets are required to produce electricity in this process.
Sometimes the internet results in eerie coincidences. I watched that ICP video for the first time in at least 4 years, the next day LTT references it in a video. I know it's not connected but it makes me feel like I'm in some Truman Show.
i thought solar panels don't need a generator. Don't they have electrons sitting in the solar panel and when the protons hit the electrons, they move and travel along a wire.
Didn't actually explain how electromagnets work! Just gave loads of examples of their use.
HDD also use electromagnets in motor rotating the recording media and in servo motor moving heads across recording media.
just got done with a test... I mean like just 10 min ago... FML
to whoever who stole my microsoft office key , i will find you , you have my word < get it ? , no cuz i don't either >
The gif at 1:07 is not very helpful, it's more for polarization; mentioning electromagnet transformer with PSUs will help connect things for main channel fans!
Came here for the ICP joke, thanks linus
Talking about MRI - a nice touch
1:10 did you just use an animation about polarization to visualize a winding coil? Meh, I guess that works :)
3:50 Why would those solar panels convert their energy to mechanical energy first? Wouldn't that only be a thing for those solar plants that use a lot of mirrors to reflect sunlight to a tower to boil water?
Photo-voltaic cells don't need mechanical energy to generate electricity
Don't forget speakers use electromagnets.
And dynamic microphones
That was a super helping hand
Blasted magnets, in what fashion doth they operate?
great explanation linus
Love the content; keep being awesome!
Solar panels don't need turbines! They do use transformers, but nothing is supposed to move in those.
Hey Linus, can you go more in-depth with MRI? I hear that it's a "super cool" subject.
Is anyone watching this for class?
BRUH ME TOO
I like how the fastest maglev train is just as fast as the Koenigsegg one:1 and Hennessy Venom
Shaggy is the guy that was ken kanniff
gyroscopes and magnets go hand-in-hand with deep freeze will help the magnets continue going with the gyroscopes
I like these informational videos.
Nicely done !
Holy shit, I thought HDD's were a physical media like a CD, so I've always been super careful when handling it so that the needle wouldn't accidently scrath the data. I guess 1's and 0's is a more reliable way, but then it's basically just the same thing as an SSD ?
Nice video m8s! :)
No country derives the majority of its energy from solar or wind, because they're awful sources and can't reliably provide energy year-round or even throughout a day. Germany spent buckets of money to try to transfer over to solar, creating a whole new concept: "Energy poverty." They still derive only a tiny percentage of their total power consumption from solar.