Magnetic Force Does NOT Exist!
Рет қаралды 417,115
8 жыл бұрынWe'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!
• Fit a 6 ft Pole in a 5...
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!!
• Centrifugal Force Does...
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EXTRA INFO LINKS
MinutePhysics on Magnets:
• MAGNETS: How Do They W...
Veritasium on Magnetism:
• How Special Relativity...
Electricity vs Magnetism:
en.wikipedia.org/wiki/Lorentz...
en.wikipedia.org/wiki/Magneti...
en.wikipedia.org/wiki/Magnet
en.wikipedia.org/wiki/Magneti...
en.wikipedia.org/wiki/Ferroma...
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Vectors vs Pseudovectors:
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@ScienceAsylum 4 жыл бұрын
*I've remade this video* and I've given the topic the time it deserves: kzfaq.info/get/bejne/f89npcp6tsfbm6M.html (How Special Relativity Fixed Electromagnetism)
@smort123 4 жыл бұрын
"given the topic the time it deserves"? Maybe one shouldn't make
@ScienceAsylum 4 жыл бұрын
@@smort123 Agreed. That's a lesson I had to learn the hard way.
@rameshthakur3185 4 жыл бұрын
When the charge is stationery Current is moving in wire apply density contraction to electrons Then it should attract it
@HolahkuTaigiTWFormosanDiplomat 4 жыл бұрын
:)
@esquare807 4 жыл бұрын
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.
@johntracy72 4 жыл бұрын
Actually there is a barber shop in Austin called Shear Madness.
@ScienceAsylum 4 жыл бұрын
I found one in Michigan too. Apparently, it’s a very common business name 🤷♂️
@gon4455 4 жыл бұрын
Barber shop for sheep.
@marcusanderson9042 4 жыл бұрын
@@ScienceAsylum Sheariously?
@handlebarfox2366 4 жыл бұрын
my favorite are hair salons named Curl Up and Dye
@aaravsart2030 3 жыл бұрын
@@marcusanderson9042 madlessly?
@joshwilliams8863 5 жыл бұрын
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.
@ScienceAsylum 5 жыл бұрын
HAHA yeah, the title is definitely click-bait.
@manessvijay3586 4 жыл бұрын
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)
@SsDiBoi 4 жыл бұрын
Bwahahaha I crack myself up man wow
@Foggy_Mustard 4 жыл бұрын
@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.
@DukeEllision329 4 жыл бұрын
we got a clown over here ☝️
@joemcd.3710 5 жыл бұрын
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.
@arthurreitz9540 5 жыл бұрын
Now I understand why Maxwell's equations are in contradiction with Newton's physic.
@alext9067 5 жыл бұрын
You're a teacher and you spelled relativistically incorrectly?
@joemcd.3710 5 жыл бұрын
@@alext9067Guilty as charged. My only defense is that the extra syllable is rarely pronounced even by native speakers.
@99bits46 4 жыл бұрын
How did Maxwell know about relativity before 1900?
@risvegliato 4 жыл бұрын
@@99bits46 He didn't! But he realised electric and magnetic forces were manifestations of the same phenomenon.
@daffidavit 6 жыл бұрын
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?
@seankelly1291 6 жыл бұрын
Wow, I’m both confused and enlightened simultaneously. My brain hurts but I like it.
@ecapers7231 7 жыл бұрын
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.
@ScienceAsylum 7 жыл бұрын
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.
@afalco54 6 жыл бұрын
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.
@TeodorAngelov 6 жыл бұрын
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.
@AstralTraveler 6 жыл бұрын
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...
@sidewaysfcs0718 6 жыл бұрын
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.
@Badgerheist 7 жыл бұрын
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.
@ScienceAsylum 7 жыл бұрын
Glad you liked it!
@Anghelnicolae 6 жыл бұрын
Man, you can take any subject on the planet and make it interesting. That's a gift.
@davidhand9721 4 жыл бұрын
Please, please tell me how this explains the force exerted between two particles with spin
@GordyDhatt Ай бұрын
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!
@ScienceAsylum Ай бұрын
A part of me misses this time in my YT history. I was able to just mess around and let loose.
@howtomake1446 3 жыл бұрын
Sir please help me. How can i make negative guass or nano tesla for a particular area, like my 1×1 feet box. How to make geomagnetic field negative. Mimimum -600 nT i want. Can a electric coil help ?
@mumtaz5239 5 жыл бұрын
"it's okay to be a little crazy" I liked that one
@virtualuniverse4861 7 жыл бұрын
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).
@ThePmfan 3 жыл бұрын
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?
@ScienceAsylum 3 жыл бұрын
This video might help: *What the HECK are Magnets?* kzfaq.info/get/bejne/jsmqgLWkztednZ8.html
@jasonwalker4610 5 жыл бұрын
I have an iron bar on a table, and a magnet next to it. The iron bar moves so a force (by definition) was applied, so then what force is at play?
@MrJaneHolliday 6 жыл бұрын
This channel is pure gold.
@3darkmount953 5 жыл бұрын
Maybe pletinum
@aasyjepale5210 5 жыл бұрын
@@3darkmount953 or even sepphire, or diemond!
@biswanathdutta4219 8 жыл бұрын
This channel ought to have millions of views!
@ScienceAsylum 8 жыл бұрын
+Biswanath Dutta Thanks!
@muratigentijan8911 2 жыл бұрын
how does an magnet create an magnetic field when it is not moving ? if i understood it right there has to be movement for a magnetic field to form or im i missing smth.
@CocoaHotCares Жыл бұрын
Would it be possible to make a skateboard with shoes using magnets, to create a Skate 3 like affect for skating?
@storm14k 6 жыл бұрын
This might be the first channel I support via patreon just because the content is so good and yet the subsciber count seems low.
@aquastudio2001 4 жыл бұрын
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!
@ScienceAsylum 4 жыл бұрын
I recently remade this video. You should show that one instead: kzfaq.info/get/bejne/f89npcp6tsfbm6M.html
@mathmachine4266 3 жыл бұрын
0:29 you're right. I'm gonna open up a hair salon and call it "AAAAAAAAAAAAH!!!"
@bondedcastaway3085 Жыл бұрын
So what is the portion that is leaving or being gained in a magnet what is creating the loops? Whats causing the other obeject to move?
@dukenukem9770 2 жыл бұрын
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!
@ravithejakandalam449 6 жыл бұрын
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.?
@darkexcalibur87 5 жыл бұрын
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.
@garethb1961 5 жыл бұрын
The electrons in the atoms are moving, making each atom like a magnet.
@darkexcalibur87 5 жыл бұрын
@@garethb1961 This is true, but spin angular momentum is still being ignored, and that has a big contribution as well.
@declankruppa8300 Ай бұрын
The spin of the unpaired electrons, which give magnetism in permanent magnets, is also an effect of special relativity.
@saikumar4346 4 жыл бұрын
Can you please explain me how did you write that electromagnetic tensor and what does its elements mean
@ScienceAsylum 4 жыл бұрын
I covered this topic better here: kzfaq.info/get/bejne/f89npcp6tsfbm6M.html
@luudest 7 ай бұрын
3:02 So the electric and the magnetic fore are the same thing? In terms of units and strength?
@GaganpreetSingh-ft1xi 5 жыл бұрын
If the charge is stationary then electrons are moving with respect to the charge. Why don't it attracts or repells the stationary charge ?
@kayokochanny5490 4 жыл бұрын
Same question here! :/ Do you have an answer?
@ojasdighe991 3 жыл бұрын
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.
@rinwesley3092 7 жыл бұрын
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.
@ScienceAsylum 7 жыл бұрын
Welcome!
@ScienceAsylum 7 жыл бұрын
And Richard Feynman explained it this way (in the Feynman Lectures) long before Veritasium :-)
@firdacz 7 жыл бұрын
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
@ScienceAsylum 7 жыл бұрын
[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.
@firdacz 7 жыл бұрын
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?
@Respraysloth 5 жыл бұрын
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.
@ScienceAsylum 5 жыл бұрын
Accurate.
@MB-sh3ep Жыл бұрын
i have a question how does induction with length contraction work
@mivsherdesdemona4471 4 жыл бұрын
me, writing my bachelor on magnetic effects, sees the title of this video: well, thats unfortunate
@rapture9125 3 жыл бұрын
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....
@PianoBounty 7 жыл бұрын
I have a question, if due to special relativity effects the positive charges seem contracted from a reference system that moves along with the negative charges, why don't the negative charges then seem contracted from our original reference system, creating an electric field and atracting the positive charge?
@ScienceAsylum 7 жыл бұрын
Well, in our point of view, we observe a neutral wire... but you can think of the electrons as expanding when the positive nuclei contract, which makes the repulsion stronger in frame with the electrons.
@firdacz 7 жыл бұрын
Yes, but why is the wire neutral? Why do those electrons change "stationary distance" so that "relativistic contracted distance" is exactly the same as distance between atoms (in wire's frame)? Why do electrons increase their distance in their frame of reference during "power up" (from no motion to moving ... well, that is not innertial frame, feel free to use some intertial while describing the acceleration ... general relativity needed?).
@YuureiInu 6 жыл бұрын
The wire is neutral because the electric field applied to the wire to make the electrons move in the first place is exactly opposite to the effect created by the moving electron so it cancels out. Don't forget you need the initial difference in electric charge ( e.g. a battery) to make the electrons move.
@fardinheidari5787 Жыл бұрын
thanks. very useful & informative. could you please tell me why does a piece of gold under ground create magnetic field around itself? as we know gold is diamagnetic
@mesosjar 8 жыл бұрын
Nice job on explaining about electromagnetism Nick.You deserve more recognition. Keep up the good work:-)
@ScienceAsylum 8 жыл бұрын
+Moses Thevaraj Thanks!
@GUYANESEGT 6 жыл бұрын
you're insane. this is madness..MADNESS. *starts to laugh hysterically*
@davidbrewer9030 Жыл бұрын
If an electron accelerates close to the speed of c, as its length decreases in the direction of motion, does its mass increase?
@lasbutious116 4 жыл бұрын
hello can anyone help me with my doubt. Initially the nucleus and outer positive charge is not moving while electrons are so cant we say the electrons experience a length contraction so negative charge density increases and it should attract the stationary positive charge
@ScienceAsylum 4 жыл бұрын
See pinned comment.
@lasbutious116 4 жыл бұрын
@@ScienceAsylum Thank you very much
@MANOJTIWARI-ni8jr 5 жыл бұрын
is this same for electric force
@ScienceAsylum 5 жыл бұрын
Yes. You have to combine them to make it a real force.
@jesusdiazzz6369 5 жыл бұрын
@@ScienceAsylum combine what?
@NajaNigricolis55 7 жыл бұрын
This channel is gold. Keep it up.
@ScienceAsylum 7 жыл бұрын
Thanks!
@Jjunior130 6 жыл бұрын
This channel makes science great again.
@destinyovbiebo8988 5 жыл бұрын
Nice one!
@rossfriedman6570 10 ай бұрын
How do we know that electric and magntic amplitude is perpendicular in EM radiation?
@felixbaylis2955 4 жыл бұрын
Excellent video! I have one question about this. If the proton was travelling up, then, according to Fleming's left-hand rule, there should be a force to the left. However, the proton is travelling perpendicular to the wire so there will be no length contraction in the direction of the current. What physical phenomenon has caused this force to the left?
@ManyHeavens42 2 жыл бұрын
Did anybody Notice this Guy's Magnetic Personality, he's Encourageable . You don't see too many of those.
@nihalelmoujaddid8166 5 жыл бұрын
3:20 you re welcome
@varunnrao3276 6 жыл бұрын
Question, If the proton doesn't move, then does it experiences a pull? i.e Why didn't the space contraction apply to the electrons when they were moving wrt to proton??
@ScienceAsylum 6 жыл бұрын
If the proton doesn't move, it can't experience a magnetic force, but it can still experience an electric force. I did a quick follow-up video: kzfaq.info/get/bejne/l8-GqbOJrJ3WhKM.html
@varunnrao3276 6 жыл бұрын
The Science Asylum Oh my god!! Nick huge fan here, thank you so much, you have helped me a ton lot, I'm about to read your book
@AstralTraveler 6 жыл бұрын
Because magnetic moment is an intrinsic property of all subatomic particles and it doesn't have nothing to do with electric charge or motion...
@actionherohack8202 5 жыл бұрын
Nice job! Enjoyed the "perspective" and genuine truth presented.
@Altorin 5 жыл бұрын
I love the screaming mind blown clone
@macronencer 6 жыл бұрын
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 :)
@ScienceAsylum 6 жыл бұрын
Yes, Veritasium did a collaboration with MinutePhysics on it.
@Respraysloth 5 жыл бұрын
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.
@jhoughjr1 Жыл бұрын
wouldnt the positive charges moving in the opposite direction just reverse the magnetic pole felt by the proton? You imply "both" sides need to be moving which doesnt seem to eb the case since motion is relative.
@snowthemegaabsol6819 Жыл бұрын
Charged objects can only interact magnetically if they both have a magnetic field. A stationary charge [velocity of 0 with respect to the field] does not have a magnetic field, so can't interact with others. It's as Nick said, magnetic force depends on motion, and we can see this in the magnetic component of the Lorentz force law [rewritten as a scalar equation]: Fₘ=qvBsin(θ) That v in the equation is velocity, and if there is a v of 0, Fₘ must also equal 0.
@discreet_boson 4 жыл бұрын
but from the static point of view, the electrons are moving, and so experience length contraction, and so shouldn't the proton get attracted?
@davidbooth3285 7 жыл бұрын
I'm off to Shear-Madness for a hair cut and I'm completely bald! Oh and science is brilliant!!
@twistedyogert 6 жыл бұрын
So instead of calling it a force I'll call it an effect.
@3darkmount953 5 жыл бұрын
Nice thinking man...
@frehleyukito 5 жыл бұрын
if that effect produces a torque, it becomes a real force
@shayanmoosavi9139 5 жыл бұрын
@@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.
@croakmcgloak3568 4 жыл бұрын
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!
@sitaramar13 3 жыл бұрын
Whatever may be the type of force, effect is to accelerate mass. For any accelerated mass , we can find a reference frame , where acceleration is zero, thus zero force. Does it mean that all forces are not real ?
@RESTLINXXX 7 жыл бұрын
"Magnetic force depends on motion and motion is relative" wow that's the simplest way to put it,congrats!
@paulg444 5 жыл бұрын
That's it youve crossed the line !!
@randyrobinson9149 3 жыл бұрын
This is the best science channel of all time, hands down. Discovery's got nothin' on you.
@AThagoras 6 жыл бұрын
Amazing! Thanks. It explains why magnetic force is always at right angles to the relative motion of the charged particles.
@danielbrian8387 2 жыл бұрын
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!
@ckimsey77 2 жыл бұрын
"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
@danielbrian8387 2 жыл бұрын
@@ckimsey77 Appreciate it! But That’s pretty much exactly what he, and I in my comment, said. A matter of semantics. 😁
@danielbrian8387 2 жыл бұрын
@@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.
@caledelith 7 жыл бұрын
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
@ScienceAsylum 7 жыл бұрын
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.
@caledelith 7 жыл бұрын
Right... so people who say that animals hunt based on magnetic fields/force (e.g. foxes who dive for mice) are completely wrong??
@ScienceAsylum 7 жыл бұрын
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 :-)
@caledelith 7 жыл бұрын
+The Science Asylum Ohh alright hahaha. Thank you!!
@AnnaelleD 7 жыл бұрын
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)
@jlpsinde 5 жыл бұрын
How could I live 3 years without your videos! Love from Portugal. Keep going! You're top of tops. I'm a physics teacher.
@ScienceAsylum 5 жыл бұрын
Thanks!
@PixyDS Жыл бұрын
Monsoon: and i took that personally
@JamshadAhmad 6 жыл бұрын
Its Wednesday my dudes, 2:59!!!!!
@taloskriti 8 жыл бұрын
I really like your persona and your pretending craziness. You are pretending very well... or are you?
@biasbias539 5 жыл бұрын
Nick why permanent magnet which is electrically neutral gets attracted to electromagnet (in which magnetism is caused by length contraction thereby altering charge density)
@ScienceAsylum 5 жыл бұрын
What the HECK are Magnets? kzfaq.info/get/bejne/jsmqgLWkztednZ8.html
@eiriklade93 7 жыл бұрын
Woaaaaaaah, why didn't my electrical engineering teacher tell me this :@ THANK YOU
@ScienceAsylum 7 жыл бұрын
You're welcome!
@trenzinhodaalegria8012 6 жыл бұрын
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.
@ScienceAsylum 6 жыл бұрын
Yes... or better yet, it should just be called the "electromagnetic force." Sometimes that looks electric. Sometimes that looks magnetic.
@ricomajestic 6 жыл бұрын
No! Only an electromagnetic force exists. Whether you see an electric or magnetic force only, depends on your frame of reference.
@alwayscurious413 6 жыл бұрын
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?
@tempname8263 6 жыл бұрын
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!
@badpexalpha2873 3 жыл бұрын
What about spin it’s a fundamental characteristic of matter or subatomic particles regardless of motion?
@dangiscongrataway2365 8 жыл бұрын
Unacceptable nick! You didn't sound crazy in the last seconds of the video. UNSUBSCRIBED!!!
@KnowBuddiesLP 8 жыл бұрын
+Daniel Skiba It's the ones that don't sound crazy you really have to worry about!
@ScienceAsylum 8 жыл бұрын
+KnowBuddies LP You took the words right out of my mouth ;-)
@KnowBuddiesLP 8 жыл бұрын
+The Science Asylum Got your back buddy! I think.. maybe that was an insult, either way ;)
@sankimalu 6 жыл бұрын
What was my patreon password again...
@peterbrdar3661 5 жыл бұрын
Not a satisfactory answer to me. In the frame where you're moving with the proton, if you then exert a short burst of force on the proton, the proton will move a fraction, then again be glued to the electrons won't it? Or will it continue to move at a slower speed than the electrons? Something doesn't add up for me.
@seastormsinger 8 жыл бұрын
I have a question. Are photons present in magnetic field interactions? Aren't they the force carrier for the electromagnetic field? Also, how to we know the higgs boson has a spin of 0 and that mass is not a force?
@ScienceAsylum 8 жыл бұрын
+seastormsinger Yes, there are carrier photons, but that's a whole other level of crazy (beyond what I was going for in this video). As for the Higgs, I really need to revisit that topic.
@singhamaninder5836 5 жыл бұрын
I love this guy!!
@3darkmount953 5 жыл бұрын
Are you a girl that you love that guy?
@panvi3181 5 жыл бұрын
WHo; elsE is awtching in twenthy ninteen ??? >.> XD LMAO
@Ansh_Skywalker 6 жыл бұрын
QUESTION:IF moving charges forms megnatism than an atom should be a magnet coz they have moving electrons. But electrons don't move they disappear from place and gets teleported how does we can consider it a motion but as you said motion is relative so electrons should be moving plz answer many confusions
@ScienceAsylum 6 жыл бұрын
The orbital momentum of each electron _does_ generate magnetism. It's just that their randomness makes it so that the magnetism of the entire electron cloud cancels out to zero.
@Ansh_Skywalker 6 жыл бұрын
The Science Asylum I am just 13 plz elaborate for me
@AstralTraveler 6 жыл бұрын
All subatomic particles have their own magnetic moments and act as tiny magnets. Magnetic field is created, when in a group of particles, magnetic moments gets aligned in one direction. Electrons in orbitals can't be considered, as electric current - position and momentum of subatomic particles remains undetermined, until measurement. Electrons are nothing like celestial bodies, moving along their orbits - this is a great misconception
@potatoesandducks958 Жыл бұрын
Question, even though the distance between protons contract, the overall charge on the wire is still neutral right? How could there be an electric force then?
@snowthemegaabsol6819 Жыл бұрын
It's not about the overall charge, it's about the charge density. Even if you have the same amount of both charges throughout the entire circuit, you wont necessarily have the same amount at any given section, so there can still be a net charge.
@potatoesandducks958 Жыл бұрын
@@snowthemegaabsol6819 But all regions in the wire have a larger charge of one kind, then the entire wire must have a net charge of the same kind. If this region is positive, and all other regions are also positive, then the entire thing is positive.
@snowthemegaabsol6819 Жыл бұрын
Sure, the entire wire could have a net positive charge. My point is that whether the entire wire is net positive, negative, or neutral, it really doesn't matter since our external charge only cares about what part of the wire is the closest.
@thephantomengine8179 4 жыл бұрын
I love watching his videos. He has found a new way of explaining physics, what it actually should be... fascinating! Thumbs up!
@robson6285 6 жыл бұрын
Brilliant! A so difficult thing but he made still a good understandable ánd complete explaination for it! Thats really brilliant!
@greenben3744 4 жыл бұрын
Hey guys. I could use your help. If I understand it correctly, the way this works, is that the moving electrons create an electromagnetic wave, meaning light, as a force carrying Particle/Wave. This propagates through Space/Time until it reaches another Particle it can interact with. There it interacts and “pushes” it in a new direction. Is this correct? Is this what an electromagnetic field does/is?
@Sebastian-vj7mw 3 жыл бұрын
I am completly confused now. If there is a magnetic field and a unmoved charche, there should be a force. But the equation says that there is just a force on moved particles in a magnetic field and in my equation it isn't a electric field either. Is there a force on a charge around a wire with current? Kind Regard, Sebastian
@ScienceAsylum 3 жыл бұрын
I redid this video more recently: kzfaq.info/get/bejne/f89npcp6tsfbm6M.html and took my time with it because it's hard stuff.
@jenf2580 4 жыл бұрын
Huge fan of yours.... Never thought rewatching can be so much fun and nostalgic.
@giantmiller1136 7 жыл бұрын
Why is in min 2:15 said that on the proton isn't exert a magnetic force because it is not moving. While in min 1:56 the proton is moved by the repelling force while both sitations are exactly the same only the point of vies is different. So why isn't the proton in min 2:15 moved by the repelling force, due to the magnetic field??
@ScienceAsylum 7 жыл бұрын
You have to look at the two points of view independent of one another. From one point of view, the proton had motion before entering any field. It was set in motion by something else (probably being fired from a radioactive material). The motion is gets from the magnetic field is additional to that and can only happen if the proton was already moving before hand. From the other point of view, the proton wasn't originally moving, so no amount of magnetism is going to create a force on it. It has to already be moving for that (and it isn't from that point of view).
@billyjoethethird8436 6 жыл бұрын
How do electrons move through a wire if they teleport? What keeps them near their nuclei?
@ScienceAsylum 6 жыл бұрын
They don't really move as smoothly as the graphic implies. They kind of hop around from atom to atom. They're in a conductive electron-cloud "band" that allows them to belong to all the nuclei in the solid simultaneously. Metals are so cool!
@coldcharlie580 4 жыл бұрын
When it comes to microscopic stuff i have a hard time visualizing it. Does it means that i’m dumb? Any suggestion?
@pranavkumar3651 3 жыл бұрын
I got a doubt why doesn't rest charge doesn't experience force when current passes with the same explanation that's given because even electrons contract not only protons so it experience a net attractive force right??????
@ScienceAsylum 3 жыл бұрын
I remade this video more recently. It might help: _How Special Relativity Fixed Electromagnetism_ kzfaq.info/get/bejne/f89npcp6tsfbm6M.html
@leocomerford 6 жыл бұрын
3:11 Speaking of which, I think ... have you considered doing a video comparing the classic vector/tensor approach to the new geometric-algebra hotness? Maybe especially in reference to electromagnetic forces and Maxwell's equations, which are now down to just *one* equation in GA, apparently.
@user-fp6pi6wi5l 5 жыл бұрын
Thanks for the video. I have a queastion about "real" force. For it to be real we need to detect it from all frames of reference. But how we detect force? Do we detect it when we detect acceleration?
@T0NYD1CK 3 жыл бұрын
So, for any given wire with any given current, if we move with the electrons the wire acquires more protons and if we move with the protons then more electrons enter the wire. That makes sense how?
@ScienceAsylum 3 жыл бұрын
See pinned comment. I remade this into a longer video and focused more on the important bits.
@T0NYD1CK 3 жыл бұрын
@@ScienceAsylum Thanks for the prompt reply. I will take a look.
@stefanocarini8117 Жыл бұрын
The electrons, in addition, decontract in the new dame of reference ! Brilliant and spot on explanation, congratulations
@stefanocarini8117 Жыл бұрын
Frame * not dame
@piyushkumarsingh0694 6 жыл бұрын
I really love your videos , I' ve a question about the coulomb 's law , The Coulomb force is directly proportional to the" product" of charges , but why it's not the "sum"of the charges, same for Newton's gravitational law?
@mattfritz1984 5 жыл бұрын
Dang this is the first video of yours I've seen and I really like the way you explain things
@malindal7458 5 жыл бұрын
you introduced your animation saying "what if the positive charge moves along with the protons", but then your animation shows the positive charge moving along the electrons? (the protons seem to be moving while the positive charge seems to stay still. If they are moving at the same speed, protons should look like they are still and the electrons should be moving?)
@ScienceAsylum 5 жыл бұрын
That's not what I said. I was talking about the electrons and then said "...like this proton keeping pace with them." Later on in the animation, when we switch perspectives, I do say "What if _you're_ moving along with the proton?" That's referring to _you as the viewer_ moving along with the single proton outside the wire. In that case, that single proton looks like it's sitting still because you're moving together (just like things in your moving car look stationary).
@gbeziuk 2 жыл бұрын
This length contraction trick is nice. Really makes me want to dive deeper into tensors.
@wenwu-xu 4 жыл бұрын
I have been thinking about how can we pattern the magnetic field into some kind of shape. Is it possible?
@ScienceAsylum 4 жыл бұрын
If you drop a bunch of "iron filings" around a magnet, those little pieces of iron will align themselves. We draw magnetic fields to match that shape.
@wenwu-xu 4 жыл бұрын
@@ScienceAsylum Hi Nick. Thanks a lot for your kind reply. I am more thinking about manipulating the magnetic field into a certain pattern, rather than just visualizing it. One way people have done so far is to shape the permanent magnets into a pyramid, e.g., can concentrate the magnetic field/flux. But still, no clue how to change the field shape into some kind of pattern.
@sohamchauhan4372 6 жыл бұрын
So magnetic force exists only wen charges move...how do charges move in iron magnet....they seem to be static in ur anination sir.
@aparnaps6009 4 жыл бұрын
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
@hirakhan4640 4 жыл бұрын
Its Okay that external charges are repel and attract but why we called this attraction and repulsion force the megnetic field ans me please
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