Magnetic Force Does NOT Exist!
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- Опубліковано 9 лют 2025
- We've all played with magnets before watching them attract or repel via magnetic force. In this video, I make the bold claim that magnetic force doesn't actually exist. It's an illusion.
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VIDEO ANNOTATIONS
Noether's Theorem Explained:
• Noether's Theorem Expl...
Relativity & Gravity Series:
• Relativity & Gravity -...
Fit a 6 ft Pole in a 5 ft Shed w/ Science!
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What the HECK are Fields?!?
• What the HECK are Fiel...
What is the Coriolis Effect?
• What is the Coriolis E...
Centrifugal Force Does NOT Exist!!
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MinutePhysics on Magnets:
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Veritasium on Magnetism:
• How Special Relativity...
Electricity vs Magnetism:
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*I've remade this video* and I've given the topic the time it deserves: ua-cam.com/video/Ii7rgIQawko/v-deo.html (How Special Relativity Fixed Electromagnetism)
"given the topic the time it deserves"?
Maybe one shouldn't make
@@smort123 Agreed. That's a lesson I had to learn the hard way.
When the charge is stationery
Current is moving in wire apply density contraction to electrons
Then it should attract it
:)
Electricity and magnetism are the two aspects of a single phenomenon, electromagnetism. Electricity does not cause magnetism and magnetism does not cause electricity, but rather special relativity joins them together, just as it joins space and time into spacetime.
Actually there is a barber shop in Austin called Shear Madness.
I found one in Michigan too. Apparently, it’s a very common business name 🤷♂️
Barber shop for sheep.
@@ScienceAsylum Sheariously?
my favorite are hair salons named Curl Up and Dye
@@marcusanderson9042 madlessly?
As a plasma physicist I was ready to rage on here, but as it turns out you're dead on the money - electric and magnetic forces are coupled. Hence what appears to be an electric force in one frame of reference may manifest as a magnetic force in another frame of reference.
HAHA yeah, the title is definitely click-bait.
as you are a plasma physicist just sharing what am experiencing
today this november 18th 2019 this speed hum sound frequency vibration fields which am experiencing started 19 years earlier has reached a level of waves and force and force of acceleration waves
(just posting the level this has reached for information and knowledge)
(posted this 6 days earlier on LinkedIn)
Bwahahaha I crack myself up man wow
@KLJF dielectric expresses itself as force thru pressure mediation. The energy was always there but it is 2 dimensional (imperceptible) that pours out tangible 3 dimensional energy, matter, force, etc. Very similar to sound, or light. Do you think that there is a solid stick of light in flashlight. No; a circuit & battery trigger a specific wavelength frequency that is light. There is other than the physical.
we got a clown over here ☝️
Absolutely correct. While special relativity forced us to change much of our views of physics, Maxwell's equations needed no change whatsoever. They were already relativisticly correct. What I tell my students is that magnetism is merely the relativistic correction of the electric force.
Now I understand why Maxwell's equations are in contradiction with Newton's physic.
You're a teacher and you spelled relativistically incorrectly?
@@alext9067Guilty as charged. My only defense is that the extra syllable is rarely pronounced even by native speakers.
How did Maxwell know about relativity before 1900?
@@99bits46 He didn't! But he realised electric and magnetic forces were manifestations of the same phenomenon.
This channel takes the difficult and makes it "fun and easy' to understand. Nick is a genius and makes science easier to understand. Don't get me wrong, I only understand a portion of this stuff, but it's a lot more than I get from audiobooks on the same subject. He takes what I thought I knew and presents it in such a way where the loopholes of misunderstanding are plugged up. I'm glad there is so much I don't know, now I have a reason to learn it in a new light. Nick makes it fun. He's funny, entertaining, and an excellent professor. I must assume he has a Phd in physics. Yes? No?
Wow, I’m both confused and enlightened simultaneously. My brain hurts but I like it.
Man, you can take any subject on the planet and make it interesting. That's a gift.
I totally love how -- whether it was deliberately or inadvertently -- you managed to insert the Wilhelm Scream (TWICE -- 0:30 & 3:00)!!
You're one of my absolute favorites!
A part of me misses this time in my YT history. I was able to just mess around and let loose.
I still don't really get magnetism. Everywhere I look for an explanation seems to define magnetism in terms of itself. And why do they say that electric and magnetic waves are perpendicular to each other if they're actually one in the same? I'm sorry for not getting this well, but I have such a hard time visualizing what's responsible for what, and how.
Working with and thinking about a "magnetic field" is just easier than reality. We do the same thing with the Coriolis effect and the Centrifugal force. Neither of those things are real, but they're easier to work with. Reality can be down-right impossible to deal with sometimes. When it comes to light waves (electric and magnetic waves), those are waves in the values of the "fields" ...and "fields" are /completely/ made up, so don't try to read into that too much. A deep understanding of light requires quantum physics, but a deep understanding usually unnecessary to make predictions about what light will do... so we use forces and fields instead because they're easier.
When I sit on a train ny speed relative to the train is 0, but you at the station see me moving fast. Using this argument speed does not exists as it is zero relative to the train.
He uses the same example to show that kinetic energy does not exist in all frames in another video. Anyway, speed is not a force.
The main problem is, that most of you confuse static fields with electromagnetic induction. Electromagnet is NOT a pernament magnet - and they have slightly different properties. In the case of static fields, magnetic and electric forces are NOT just different aspects of a single force - they are 2 completely different forces, produced in different ways and affecting different materials. If you don't believe me, then check, if a compass needle will be affected by static electric charge - I've checked it by myself and it didn't. But static charge will affect a needle, which is made of tin foil (which won't be affected by magnetic fields).
Both electrostatic and magnetostatic fields have such properties, as dimensional size and magnitude, so both fields are physically real. Magnetic domains can be observed under microscope, while electrons have mass - both are absolutely objective...
as a chemist working on molecular magnets, i can assure you no one really "gets" magnetism at the fundamental level.
no theory actually explains the fundamental root of magnetism, all of quantum mechanics and quantum field theory is pure mathematics and some conventions. Like the direction of magnetic moment, or angular momentum, totally arbitrarily chosen.
Spin itself is also not fundamentally known, all we know is that electrons carry instrinsic angular momentum, how is this actually happening? No one knows.
Some cannot be known.
Quantum field theorist here. Here's a pretty fun fact: if you try to write down a sensible quantum theory that conserves electric charge and works with special relativity, you automatically recover all of the equations for electromagnetism! You don't have to mention electrons or Faraday's Law or anything, but the Maxwell's equations still magically pop out! Thought I'd share that.
Accurate.
I've been searching for a video like this for a couple years now. You nailed it! Thanks for presenting it in such an accessible format.
Glad you liked it!
"it's okay to be a little crazy"
I liked that one
MONSOON:
LORENTZ FORCE GO!!!
MAGNETIC FORCE, JACK!!!
NATURE’S FORCE
This channel is pure gold.
Maybe pletinum
@@3darkmount953 or even sepphire, or diemond!
This channel ought to have millions of views!
+Biswanath Dutta
Thanks!
This is the best science channel of all time, hands down. Discovery's got nothin' on you.
Oh for Pete's sakes. I Can't believe it has taken so many years for someone to finally explain how electromagnetism works. I've been confused for so long. This video has made a sub out of me.
Welcome!
And Richard Feynman explained it this way (in the Feynman Lectures) long before Veritasium :-)
And could you give me the explanation (why is the wire trully neutral and the electrons not denser thanks to length contraction) or point me somewhere where I can get more info? Thx
[Property 1] Charge is conserved (doesn't change in a closed system).
[Property 2] Charge is invariant (the same in all frames of reference).
Let's say our system is a wire and a battery. At first, they're not connected, so no current is flowing. At this time, both the wire and the battery are neutral (no net charge). After we connect the wire to the battery, the current begins to flow quickly reaching a steady drift speed. The wire-battery system was neutral before and, by conservation of charge, must be neutral after. Even though the electrons are now moving, they will redistribute themselves to maintain zero net charge.
If we shift to the reference frame where the electrons are sitting still and the nuclei are moving, a similar thing happens. Originally, both look like they're moving, so they're both Lorentz contracted (and still no net charge because charge is invariant). When you connect the battery, the electrons are brought to rest creating a charge density in that section of wire. That's a problem since charge is conserved. The net charge for the whole circuit must remain zero, so the other side of the circuit must have the opposite charge density to balance it out.
The reason the diagram is misleading when you ask question like this is because the diagram doesn't show the entire system. That little section of wire has a charge density, but the entire circuit's charge density is not uniform.
Thx. I have already realized the other half - if electrons are stationary in the "upper" wire, they have to move at almost the double speed of the protons/atoms int he "lower" wire. That makes negative charge there, because those electrons in "lower" wire are shrinked (closer than protons/atoms are).
I was wondering about the wire's frame. I will try to reword your explanation: "The wire-battery system was neutral before and, by conservation of charge, must be neutral after." So, electrons cannot pop into existence from nowhere, so they will maintain their distance even if accelerated by the battery. The battery creates a pressure in one direction, like a water pump. Some "energy" of that pump have to fight the length contraction produced by relativistic effect - can we say that? It produces "lower pressure", but that gets equalized eventually (making the wire neutral again, same "pressure" everywhere).
P.S.: Lower pressure on one side of the battery and higher pressure on the other side. That travels through the wire to eventually cancel out.... correct?
0:29 you're right. I'm gonna open up a hair salon and call it "AAAAAAAAAAAAH!!!"
me, writing my bachelor on magnetic effects, sees the title of this video: well, thats unfortunate
The electrons, in addition, decontract in the new dame of reference ! Brilliant and spot on explanation, congratulations
Frame * not dame
you're insane. this is madness..MADNESS. *starts to laugh hysterically*
Congratulations. Not that it was ever much to begin with, but with the now non-existence of magnetism I have been officially de-intilligenceified.
As a carpenter who is trying to learn about electronics and forces, I have to say, I think that you nailed it. We need these types of videos for everyone to think on. Thanks buddy....
Every student would be proud to have such a professor.
I never thought of the impact of length contraction on the observation of charge neutrality of a live wire. Interestingly, the length contraction argument applies in the wire rest frame as well. It must be that the electrons in the current naturally space space themselves out in a way that exactly compensates for the length contraction an observer in the wire's rest frame would measure in order to preserve charge neutrality in the wire rest frame. Thus, only in the rest frame of the wire (or in an inertial frame moving perpendicularly to the wire) does the wire appear to be charge neutral. In any other inertial frame, the length contractions of the wire and the electron current would be different. This would result in observations of non-neutral linear charge densities... Cool stuff! Thanks for sharing!
When i came in this video i thought this guy was gonna be all kinda crazy. But when he explained himself i knew where he was coming from, nice vid!
This channel is gold. Keep it up.
Thanks!
This channel makes science great again.
Nice one!
Monsoon: and i took that personally
This might be the first channel I support via patreon just because the content is so good and yet the subsciber count seems low.
I:46; "They can exert magnetic force..." contradicting the thesis. Aside from such pedantic nitpicking, this is a good explanation.
"Magnetic force depends on motion and motion is relative" wow that's the simplest way to put it,congrats!
So it wont come like a flood of pain?
I love this fact. "Electromagnets only work because of Special Relativity" is something I discovered a couple of years back (can't remember where, it may have been Veritasium?) and it's my favourite thing to blow people's minds with :)
Yes, Veritasium did a collaboration with MinutePhysics on it.
Quantum field theorist here. Here's a pretty fun fact: if you try to write down a sensible quantum theory that conserves electric charge and works with special relativity, you automatically recover all of the equations for electromagnetism! You don't have to mention electrons or Faraday's Law or anything, but the Maxwell's equations still magically pop out! Thought I'd share that.
I love how he thanks me for liking the video before even asking for it, and I love that he was absolutely correct.
Great video! Didn't know about special relativity until now but I don't think I am at that level of physics so this is a good reference video for my future physics studies. Keep rolling!
I recently remade this video. You should show that one instead: ua-cam.com/video/Ii7rgIQawko/v-deo.html
How could I live 3 years without your videos! Love from Portugal.
Keep going! You're top of tops. I'm a physics teacher.
Thanks!
I like your approach to the unification of forces... then defining forces... then defining the entities that define forces (and the forces we are based upon, where we can call something 'alive' or 'evolving' in a defined forward time).
Did anybody Notice this Guy's Magnetic Personality, he's Encourageable . You don't see too many of those.
If the charge is stationary then electrons are moving with respect to the charge.
Why don't it attracts or repells the stationary charge ?
Same question here! :/
Do you have an answer?
The length contraction for electrons is negligible because of their shorter lengths so the change in length is not so prominent however in case of protons the same is not true hence wire becomes positively charged.
This length contraction trick is nice. Really makes me want to dive deeper into tensors.
I love the screaming mind blown clone
you just missed a fantastic sponsor setup.
Thats brilliant! yes.... and so is the sponsor of this episode
.
At the time, the channel was too small to get any sponsors. You're right though. Would have been a great transition.
I'm off to Shear-Madness for a hair cut and I'm completely bald! Oh and science is brilliant!!
I've been an ET over 40 years, and I always thought those electrons were pretty sneaky.
Nice job on explaining about electromagnetism Nick.You deserve more recognition. Keep up the good work:-)
+Moses Thevaraj
Thanks!
Einstein said magnetism is not a force but a curvature in space. Quantum mechanics said kiss ur ass baby, haha.
Please, please tell me how this explains the force exerted between two particles with spin
Nick: gravity isn't a force.
Me: dude! OK I'll bite.
Also Nick: there is no such thing as a magnetic force.
Me: noooooooooo!
3:20 you re welcome
The Fast Fast got me🤣🤣🤣
is this same for electric force
Yes. You have to combine them to make it a real force.
@@ScienceAsylum combine what?
Still can't find a straight answer for example of how a N pole repels, through empty space, another N pole. Does it bend space like gravity? How can it just push the like pole away?
This video might help:
*What the HECK are Magnets?* ua-cam.com/video/XczMRsiq9mk/v-deo.html
Its Wednesday my dudes, 2:59!!!!!
Channel should be named "everything you know is wrong"
So instead of calling it a force I'll call it an effect.
Nice thinking man...
if that effect produces a torque, it becomes a real force
@@frehleyukito so you say if I apply a force along a door ( θ=0 or π ) my force doesn't exist ? Because that doesn't produce a torque.
6 years later.... and i finally understand every bit on this video....
That's it youve crossed the line !!
Excellent explanation - short but very slick.
Hey i got a doubt.You made me clear that special theory of relativity creates magnetic force in current carrying wire.But what about permanent magnets.?where do they get magnetic force from..?That little part in beginning of video is not sufficient explaination for me.Can anyone help.?
Yes you are right, spontaneous magnetism in metals wasn't addressed. It comes from something completely different and I do feel like the video is misleading in this sense.
The electrons in the atoms are moving, making each atom like a magnet.
@@garethb1961 This is true, but spin angular momentum is still being ignored, and that has a big contribution as well.
The spin of the unpaired electrons, which give magnetism in permanent magnets, is also an effect of special relativity.
so what IS the electromagnetic phenomenon?
You totally got me! I was thinking, since I’m all about perspectives, that you had found a new way of looking at things. Little did I know you were speaking about semantics! Love it! Most people don’t differentiate between, or don’t understand there is a difference in term, between magnetic and electromagnetic force, but you described it succinctly! Great video!
"difference between magnetic and electromagnetic force".... these are one in the same, you cant have moving charges or electricity without magnetism, they go together, thus the term electromagnetism. See how both are combined into one word/thing? Thats for a reason, like space-time as being one entity. Research underlying subjects before you blindly fall into flawed ideas as cold facts. Meant as advice not an insult im just trying to help bro
@@ckimsey77 Appreciate it! But That’s pretty much exactly what he, and I in my comment, said. A matter of semantics. 😁
@@ckimsey77 It’s similar to calling all small space objects ‘debris’. While the field differentiates between ‘debris’ and ‘micro meteorites’. They are both technically “debris”, but they are separated by term so there’s no confusion. Like the James Webb telescope: They have said it will definitely be hit with “debris” (an article said this), it was misleading because there isn’t any man made debris at the L2 point. They were referring to the micrometeorites that would hit it.
1:03 magnetism explained in 2 seconds whereas my teacher never explained what magnetism even is
Here's a good one too: ua-cam.com/video/XczMRsiq9mk/v-deo.html
So what you mean is that it actually should be only "electric force", not "magnetic force" as electric charges and movement are fundamental to it's existence and the magnetic force is only a point of view of the electric force.
Yes... or better yet, it should just be called the "electromagnetic force." Sometimes that looks electric. Sometimes that looks magnetic.
No! Only an electromagnetic force exists. Whether you see an electric or magnetic force only, depends on your frame of reference.
I'm going for a yes on this one. My reckoning is that if we could stop everything from moving everywhere and we had a stationary electric charge, then it would have a stationary electric field surrounding it? There would be nothing magnetic going on because nothing is moving? As an analogy to this I say that I can point my finger into the air and hold it there and people can see my stationary finger pointing ; If I make a rotation motion with my finger then I immediately can define clockwise to an observer and similarly I must thereby define anticlockwise too this is a kin to there being no such thing as a magnetic monopole. I'm trying to avoid relativity if I can too as I don't think it should be needed to resolve any of this?
I was understanding that there are no "forces"....but rather "interactions".
On a quantum level, "interactions" is definitely a much better word choice.
@@ScienceAsylum THANKS!!!
Please keep posting these videos. As a lover of science, I enjoy them.
But I have read quite a few others' comments that imply that science isn't necessarily their cup of tea, but none-the-less they are craving your videos for the knowledge & understanding!
So thanks again, & PLEASE keep posting them!!!
🤓
Woaaaaaaah, why didn't my electrical engineering teacher tell me this :@ THANK YOU
You're welcome!
Finally I know a little more about magnetism and electromagnetism by the point of view of quantum mechanics. 😊 Thank you.
You're welcome :-)
Unacceptable nick! You didn't sound crazy in the last seconds of the video. UNSUBSCRIBED!!!
+Daniel Skiba It's the ones that don't sound crazy you really have to worry about!
+KnowBuddies LP
You took the words right out of my mouth ;-)
+The Science Asylum Got your back buddy! I think.. maybe that was an insult, either way ;)
I am really-really in love with the moment, when music started playing. It's been _so long,_ since I heard some motion in science explanations!
I love this guy!!
Are you a girl that you love that guy?
Amazing! Thanks. It explains why magnetic force is always at right angles to the relative motion of the charged particles.
WHo; elsE is awtching in twenthy ninteen ??? >.> XD LMAO
That's what the thing with special relativity , Electric and magnetic fields are different only when viewed from different frames of reference...
I really like your persona and your pretending craziness. You are pretending very well... or are you?
I once dated a girl who had a magnetic personality, and she forced me to buy supper for her at a hot dog stand.
Okay... so magnetic forces aren't real... what about magnetic fields?? I tried watching the other video that is linked at around 1:39 but I just don't get it. There are magnetic fields? How do they work then? What do they even do?! :p
Fields (like magnetic fields) aren't a real thing. They're just a thing we use on paper to make calculations easier to understand. You can make the same predictions with real things like energy and what we call "potential," but the calculations are harder to do.
Right... so people who say that animals hunt based on magnetic fields/force (e.g. foxes who dive for mice) are completely wrong??
Caledelith Well, the point I was trying to make in the video was that electric force and magnetic force don't exist as separate things. There's just an electromagnetic force... and that's real :-)
+The Science Asylum Ohh alright hahaha. Thank you!!
I don't want to scare you but what if fields were real?
Think about it: when you read my words, you catch the idea I want to express to you. Then this idea is an information I transfered to you. Is there something that can be identified as an idea? Not the letters, not the screen, something that *is* the idea? No, nothing. Does the idea exists? Of course it is, but what it is, we don't know.
What about fields? Couldn't they be informations, ideas, too?
As you see, information doesn't need any physical things to be. But it needs something to catch it and to make it become real (like our brain)...And it needs something to create it at first.
Now, you have these questions: who create these informations which create our universe? where are these informations? Are they located? And how does something (what?) access it?
Abstraction is a beautiful tool, but it can lose you because nothing is real in an abstract world.
Is our whole universe just an abstraction?
So many questions... but interesting ones, isn't it?
(Please excuse my english)
So, the viewpoint of reasonable seasoned mathematician, there is no porblem:
The question itself does not exist.
What was my patreon password again...
I think I partly understood this, it both hurt & felt good. The pain is simply exquisite. Great videos.
3:16 Tensors are love. But I can see why Maxwell used quaternions originally. The algebra is just so natural to emag. But using Geometric algebra is when it really turns pretty.
Hey Nick,
Now I understand why Conductors behave like magnets but I'm not sure how changing magnetic field induces current in conductor
MIND BLOWN! next video, you would show me how I dont exist!
Hmm... that's interesting! So, a beam of electrons moving in a vacuum won't produce a magnetic field, and so that would mean that electrical current is not just defined as moving charges but relative motion between charges! If the protons in the wire are hypothetically turned into anti-protons, the magnetic field would be reversed. Thanks, Nick!
That's not exactly what I said. One charge moving in a vacuum is not an electric current... but a bunch of them in a stream do. It's just that ALL motion is relative to SOMETHING. If you had an empty universe with just a stream of electrons in it, saying "they're moving" would have no meaning. For "motion" to have meaning, there must be something else around... and for electric current, that's usually positive nuclei.
my science class watched one of your videos a few weeks ago. (sorry, I kind of forgot which video. bad memory), and it made me decide to look you up. I kept on forgetting, then today it just popped up in my head. when I looked you up on UA-cam, I was surprised by how many subscribers you have. I think you deserve more, because your videos are interesting. anyway, sorry for randomly commenting about this, I'm kind of insane, so I felt I had to.
+Chandler Spackman
I'm glad you found the channel again :-) Welcome!
+The Science Asylum no problem! they're really interesting. I would have never even thought that magnetic force doesn't exist, but you made it clear and had evidence.
You are very good at explaining things! Plus 1 sub....
Thanks!
Where do ultrahigh energy particles come from? I've been wondering this for a while.
Particle accelerators smash protons together. The faster they make those protons go before they hit each other, the more energy they have. With more energy available, higher energy particles can be made (most of which are combinations of unstable quarks, so they don't last very long).
After 0:08: Fortunately it is NOT science. It's nature! Science only tries to describe nature. Know your place, sir!
You are right! In a freely falling reference frame there is no gravity!
Unfortunately, there is this problem with solid state physics at the bottom of the cliff...
3:02 So the electric and the magnetic fore are the same thing? In terms of units and strength?
Man, I really wish there was an official set of rules for physics. If only there was a way to unify all perspectives...but each person can witness the same thing a totally different way. Length contraction is like an odd end
I thank the Gods for founding this channel.
I wish this guy was my science teacher at school. Brilliant
He marks hard, fails everyone.
Wished this episode didn't exist in the first place.
You made my day nick 😀
The best name for a hair salon I ever saw was in a TV drama. It had the name "Curl Up And Dye".
shear madness is perfect way to describe his "Nick's" haircut
Physics- the art of conceptualizing what something does and recording it with squiggly symbols we call math that reveals we fundamentally don't know "how".
sir in the first scenario the electrons are moving, and according to the special theory of relativity there is a chance for the electrons flow also to shrink making the wire negatively charged, and therefore, attracting the proton
I had tried to read Purcell Chapter 5 about this but until the animation of the protons inertial reference frame showing the conductor protons moving and thus length contracting increasing their perceived net charge this was still unclear to me! Thank you very much this is a superb animation. I finally feel like I understand where magnetism comes from, and why the tensor unification is the more fundamental and therefore electromagnetism is the only real force you observe.
You're welcome! I'm glad it helped :-)
What is magnetic force ? It is force manifested 1 - between 2 permanent magnets or 2 - between one permanent magnet and a wire crossed by electric current or 3 - between 2 wire crossed by electric current. So, how can you say it is not exist ? Be careful, you have a misconception here.
the fact that magnetism and gravity dont exist is balls-to-the wall trippy
These videos are too short. Just when I feel like I'm getting it, the video abruptly ends. Good though
I agree. That's why I've been making my recent videos a little longer.