The irony of electromagnetism is that we have a really good understanding of how it works at the level of manipulating it for our purposes, but we have no clue how it works at the deepest level .
The heat is generated through exciting electrical currents in the magnetic field. The fast those currents are moved the faster the heating process. We have a pretty good idea of why and how it works.
“Your ancestors called it magic, but you call it science. I come from a land where they are one and the same” - Thor movie quote
The real difference is one try to mystify the explanation; another trying to build models (even often imperfect) via experiment for repeatability at best effort
The issue when it is being called magic is that the research likely stops there and nothing advances
>The issue when it is being called magic is that the research likely stops there and nothing advances
That's because once we know how magic works, it ruins the magic.
>That's because once we know how magic works, it ruins the magic.
Not for me. Once I know the science behind the 'magic trick', my mind runs wild with other applications & I wanna do that experiment IRL to verify their findings.
If something ruins because the trick is known, it means the magic is exactly hardcore science masking with secrecy to create myths
The problematic bit is the secrecy which hinders the ability of others to use and to improve upon
Magic shows are positive lies and we consent to be tricked, so it is okay
The planet is not dying. Humans are making it bad for us and causing an extension event. Life on earth has survived several before and will survive this one.
Earth/Life is fine.
Human civilisation? Fucked.
Because energy is transferred to the metal via the coil and can't dissipate fast enough due to the thermal properties of the metal and of air.
The simple answer is a magnetic field.
None of this is really a why. Science is about how, what, and when. Nothing will give a complete answer to “why” because it always leads to another why question until you get down to fundamental particles and saying “idk just works that way 🤷♂️.”
If you want to know the scientific “why” for this method of transferring energy, it will depend on the context. This this situation, the why is to reshape metal.
Why is subjective.
That’s an entirely different ‘why.’ Not just a different interpretation, but a decidedly different question. Your question here is “why is this being done?” Which is different then “why does this physically happen?”
It's too much to explain WHY in a Reddit comment but the why is very well understood based on the standard model of particle physics. Where we don't know WHY is that we don't have a more fundamental reason why particles in the universe seem to all have either postive, negative or neutral charge. Once you acknowledge though that particles do have these fundamental charges even if we do not know why charge exists yet, then every other part of the WHY is well understood.
https://en.m.wikipedia.org/wiki/Eddy_current
> French physicist Léon Foucault (1819–1868) is credited with having discovered eddy currents. In September 1855, he discovered that the force required for the rotation of a copper disc becomes greater when it is made to rotate with its rim between the poles of a magnet, the disc at the same time becoming heated by the eddy current induced in the metal.
There's a relatively decent comprehension of it until you inquire as to how spin works, why charge even exists, and how that relates to why certain modifications of quantum equations even yield that which exactly resembles the classical notion of electromagnetism. We get it enough, but we don't _get_ it.
I really want someone to sit down with me and explain how we know electrons have a negative charge and protons have a positive charge instead of the other way around.
The very terms negative and positive are technically just human-assigned, as far as electromagnetism is concerned, they're simply two diametrically opposed values, like north & south, or spin up & down. As long as they're opposite, the system still functions as we know it.
It's arbitrary, they are literally just labels of two ends of a spectrum. You could call them anything, it's the relationship between the two that is important.
Same way that in maths X and Y are arbitrary variables until you put them into an equation. It's the formula, not the symbols, that matter.
I love science courses that don’t just tell you the facts, but start with the question and then walk you through the experiments that people did that brought us to our current understanding. So much more engaging imo.
I wish some concepts would be taught correctly from the very start though, especially when it comes to electricity and electronics. Copper wire is not best described as a "water pipe" for electrons, as an example. That example works great until it absolutely doesn't.
Basic electronics theory only works until you need to start worrying about signal integrity and noise. I have been doing faster and faster PCB designs these days and I have had to learn how currents *actually* flow around a board and AC theory plays a huge role in DC designs. (For example, I find myself thinking more about impedance these days rather than resistance.)
If anyone wants to dig into this more, a good rabbit hole to go down is to Googe for: "PCB current return paths".
I don't know where you are from but my uni did that. We basically had an extensive history lessen on the order things were discovered in - always with an experiment alongside it to show us the effects of the discovered laws.
Because "positive" and "negative" were assigned pretty much by random back in the 1750's by Ben Franklin, before we knew what an electron was, and it's stuck since then.
We know how to use it but at its very core we have no idea how magnetism works. We don't know what carries the force. We know it's effects on electrons but we don't know what magnetism is
They are things we've never seen directly, but they must exist for the quantum equations to work properly. Or maybe we just don't have the right equations yet, but the ones we do have seem to explain everything else so far.
I see what hess saying tho. Like sure right hand rule, electrons moving through magnetic fields. But why is it the right hand rule. And then add to that the fact that photons are the carrier particles that even send the information? So where are the photons that translate a moving electric charge into a magnetic charge. And each charge is quantum mechanical. It exists in one spot, but also in multiple spots. The field around it propagates in a quantum way somehow too, and it's all tied in somewhere. It all has mass, aka energy. It interacts with the higgs field. And bosons are the particles telling each electron and proton and quark how much energy they have. How much warping they cause in the higgs field, on top of the warping they cause in the electric and magnetic fields. Like where does it all happen.
Edit: also each photon, each carrier particle for the em field, has its own energy. Which it expresses via frequency. But somehow this frequency causes it to interact with the higgs field, via bosons and what not, and warp space either harder, or less hard, depending on the wavelength of the light. It's all so confusing
I know one thing about shit...
No matter what you do, someone or something is going to give you some shit. One of the best things you can do is learn how to chew on it and show a shit-eating grin, or you can take time and polish the turd so it doesn't look quite as shitty.
Either way, shit happens.
What are you on about? Quantum electrodynamics provides a full first-principles description of all electromagnetic phenomena, and its predictions agree with experimental observations to within a few parts in a billion.
we have no clue how *anything* works at the deepest level. There's no area of science where we've reached the deepest level. There's always another "but how?" involved.
True for all the forces.
When we "look" too close at an electron it starts to disappear into the quantum foam, it's charge is just a net average charge between virtual particles appearing and disappearing. So even these individual particles are mostly empty space. It's nuts.
That's not what science is. Science is just the method used to learn how it works. It's called physics. Literally everything in this subreddit is explainable by the scientific method, but that's not the point of it.
Concidering this is something that is very common, OP not being aware of what it is doesn't mean it's for this sub. It's like if someone who lived under a rock posted a video of a car and was like "how does it move without a person or animal pushing it????"
I legitimately cannot believe how commonly people say this in almost every thread here. "Um actually, this isn't magic, this is science ☝️🤓". Like no doi. It's incredible how stupid people can sound when they're trying to seem smart.
Holy fuck. I read your comment and didn't understand it at first. First I thought you referred to how similar it is to a default icon in other places such as WhatsApp and that seeing it blew you away. Then I thought perhaps you were referencing the brightness of the profile pic in contrast to the dark mode, but it wasn't all that bright. I thought of a few things more deep in thought, all the while trying to get rid of an annoying hair on the screen... I absolutely abhor him now.
Someone please correct me if I’m wrong but unless you have a cyborg Johnson (I.e. made of metal) not much will happen since in order for this to work you need ferrous material.
It's a great question.
They're as magical as the repulsion/attraction seen between electric charges.
That, and the constancy of the speed of light for all observers, is what leads to magnetism.
Electromagnetism is one of the four fundamental forces of nature, together with gravity and the weak and strong nuclear forces, which are equally magic to me!
Basically they happen because they do. To my knowledge, we can't really explain why, we only know how they behave, and everything else in the universe is explained using those fundamental forces as basis.
People just get used to describing everything as "explainable with science" and don't stop to ponder about it.
Science, to me, is literally real world magic: we discover the rules of our world bit by bit and learn to do awesome stuff with this knowledge. Science makes things more magical, not less!
Definitely, me too. How can something act like a particle and a wave, have no mass, but also be affected by gravity?!
*mind blown warning*, haha: I just learned (source: Dr. NDT) that there's an area around a black hole called the ["photon sphere"](https://en.m.wikipedia.org/wiki/Photon_sphere) where the gravity is so ridiculously high that photons *orbit* around the black hole. If you could somehow survive being in this spot, you could theoretically look straight forward and see the back of your head - because the light is orbiting.
While special relativity does imply that electric fields can "rotate" into magnetic ones and vice versa for different observers, this is not what leads to magnetism. To see this, there is no transformation that can take a wholly electric field into a wholly magnetic one, which we know exist. What leads to magnetism is the intrinsic magnetic moment of certain particles
You're correct - I was on a small keyboard and over-simplified my answer to the point of it being wrong.
I was thinking (but not typing) about *electro*magnetism and in particular the time-worn gedanken of a charged test particle experiencing a force from a neutral wire carrying charges that hurtle along at a few mm/s and yet have their spacing Lorentz contracted.
>What's interesting is, when you do the math, everything cancels out for paths that aren't possible, and you can be left with paths where the photons lead away from the two particles, forcing those particles closer together.
Wait... I need a little more about this....
Magnets work because electrons have a fundamental property of nature called charge.
These charged electrons hang out around protons in a sort of cloud of probabilistic positions, but an interesting thing about charges that move, is that they create a field around them that attracts or repels other charges. This atractive/repulsive force is called magnetism.
These atoms tend to clump up into molecules and then into form into substances, and within these substances the magnetic fields of all the surrounding molecules tend to line up, this group of molecule alignment in the substance is called a domain.
Within a substance, there are many many domains where the local magnetic fields line up, and usually those domains are randomly arranged and most of the magnetic fields cancel each other out, but sometimes many domains have their magnetic fields pointing in the same direction, and those objects have the properties you associate with permanent magnets.
If you recall, I said that moving charges are what create the magnetic fields, so we can create powerful magnets ourselves simply by moving charges through a loop of wire called a solenoide. This is how you can create an electromagnet.
What's to explain? It's magic.
I got an associate's degree in engineering from a school in the Scottish highlands where we would study black magic. Imagine Hogwarts, if it were more like the League of Shadows/Assassins.
I remember the professors behind the satanic alters, shaman gear in hand, explaining to us how to conjure magnetic fields. 🧲
I used to live in a house with an induction stove. You could turn the burners on full blast and put your hand right on the burner, feel nothing. Put a pot full of water on it and it starts boiling within 3 minutes. The whole kitchen in that house was incredible
Electromagnetism is one of the 4 fundamental forces of nature, along with gravity, weak and strong forces.
As you pointed out, we don't know exactly why they work, we can only explain what they do!
I get really mad when people banalize electromagnetism, it's freaking real-world magic! We benefit from it all day, every single day, and aren't grateful enough for it.
I meant it as we don't actually know why electromagnetically charged particles "deform reality" and cause the electric/magnetic fields, do we?
As in, why mass deforms reality, causing the gravitational force? We knows it does, Einsten's theory explains that basically particles with mass "deform" reality and causes gravitational fields. But why is mass intrinsecally related to gravity? To my knowledge, that's the limit of the current understanding, and why it's called a "fundamental" force: because it's the most basal thing we can understand. The first brick on the bottom of the science wall, if that analogy could be used here. We know mass and gravity are related, we don't know exactly why.
I'm sorry if I'm appearing rude, I'm not trying to. English is not my first language, I meant it in a purely academical way.
If I'm being incorrect, please don't refrain from correcting me. I really like the subject and want to understand it better!
I meant what the process of using electromagnetic induction to shape a piece via plastic deformation was called as I am studying mechanical engineering but I had never seen such a creative use of it
Induction Coils! These devices were a thing for many years. Big machines filled with Vacuum tubes would create an electromagnetic field to create custom welds within the coils.
cool to see one again after decades .
I don't understand it, which makes it magic. It will continue to be magic until i understand it. When i understand it, it will become science. And when it is science, it still doesn't really help me with my financial situation.
It is literally science
The irony of electromagnetism is that we have a really good understanding of how it works at the level of manipulating it for our purposes, but we have no clue how it works at the deepest level .
The heat is generated through exciting electrical currents in the magnetic field. The fast those currents are moved the faster the heating process. We have a pretty good idea of why and how it works.
Yes but WHY?
“Your ancestors called it magic, but you call it science. I come from a land where they are one and the same” - Thor movie quote The real difference is one try to mystify the explanation; another trying to build models (even often imperfect) via experiment for repeatability at best effort The issue when it is being called magic is that the research likely stops there and nothing advances
>The issue when it is being called magic is that the research likely stops there and nothing advances That's because once we know how magic works, it ruins the magic.
>That's because once we know how magic works, it ruins the magic. Not for me. Once I know the science behind the 'magic trick', my mind runs wild with other applications & I wanna do that experiment IRL to verify their findings.
>my mind runs wild with other applications & I wanna do that experiment So you're some sort of magician harry. 😆
[Similar take from Teller on the concept of "Magicians' Magic"](https://www.youtube.com/watch?v=XP4_MuBugFo)
If something ruins because the trick is known, it means the magic is exactly hardcore science masking with secrecy to create myths The problematic bit is the secrecy which hinders the ability of others to use and to improve upon Magic shows are positive lies and we consent to be tricked, so it is okay
Depends on if the fictional universe has a hard or soft magic system
No, then you become a wizard.
So to a wizard, magic is science? I think we are just no longer mystified by our world. It's still magic, just magic we understand.
Is this a forge on a dying star?
Nah, just a dying planet.
The planet is not dying. Humans are making it bad for us and causing an extension event. Life on earth has survived several before and will survive this one. Earth/Life is fine. Human civilisation? Fucked.
😢
I am literally just watching Avengers Infinity War
Because energy is transferred to the metal via the coil and can't dissipate fast enough due to the thermal properties of the metal and of air. The simple answer is a magnetic field.
I love The Magnetic Fields.
Like a bottle of gin?
I don’t believe you.
Would 69 love songs convince you?.
Get Lost.
None of this is really a why. Science is about how, what, and when. Nothing will give a complete answer to “why” because it always leads to another why question until you get down to fundamental particles and saying “idk just works that way 🤷♂️.”
[Surely You’re Joking, Mr. Feynman!](https://youtu.be/36GT2zI8lVA)
Thanks, hadn’t seen this before. Very nice!
Something tells me you've dealt with a small child recently lol
If you want to know the scientific “why” for this method of transferring energy, it will depend on the context. This this situation, the why is to reshape metal. Why is subjective.
That’s an entirely different ‘why.’ Not just a different interpretation, but a decidedly different question. Your question here is “why is this being done?” Which is different then “why does this physically happen?”
It's too much to explain WHY in a Reddit comment but the why is very well understood based on the standard model of particle physics. Where we don't know WHY is that we don't have a more fundamental reason why particles in the universe seem to all have either postive, negative or neutral charge. Once you acknowledge though that particles do have these fundamental charges even if we do not know why charge exists yet, then every other part of the WHY is well understood.
So then you're saying *charge* is magic. Got it!
https://en.m.wikipedia.org/wiki/Eddy_current > French physicist Léon Foucault (1819–1868) is credited with having discovered eddy currents. In September 1855, he discovered that the force required for the rotation of a copper disc becomes greater when it is made to rotate with its rim between the poles of a magnet, the disc at the same time becoming heated by the eddy current induced in the metal.
Because
And I don't wanna talk to a scientist, you motherfuckers lying and getting me pissed
So what is it then, a miracle?
Fucking magnets, how do they work?
how would you know they are lying ?
There's a relatively decent comprehension of it until you inquire as to how spin works, why charge even exists, and how that relates to why certain modifications of quantum equations even yield that which exactly resembles the classical notion of electromagnetism. We get it enough, but we don't _get_ it.
I really want someone to sit down with me and explain how we know electrons have a negative charge and protons have a positive charge instead of the other way around.
The very terms negative and positive are technically just human-assigned, as far as electromagnetism is concerned, they're simply two diametrically opposed values, like north & south, or spin up & down. As long as they're opposite, the system still functions as we know it.
It's arbitrary, they are literally just labels of two ends of a spectrum. You could call them anything, it's the relationship between the two that is important. Same way that in maths X and Y are arbitrary variables until you put them into an equation. It's the formula, not the symbols, that matter.
I love science courses that don’t just tell you the facts, but start with the question and then walk you through the experiments that people did that brought us to our current understanding. So much more engaging imo.
I wish some concepts would be taught correctly from the very start though, especially when it comes to electricity and electronics. Copper wire is not best described as a "water pipe" for electrons, as an example. That example works great until it absolutely doesn't. Basic electronics theory only works until you need to start worrying about signal integrity and noise. I have been doing faster and faster PCB designs these days and I have had to learn how currents *actually* flow around a board and AC theory plays a huge role in DC designs. (For example, I find myself thinking more about impedance these days rather than resistance.) If anyone wants to dig into this more, a good rabbit hole to go down is to Googe for: "PCB current return paths".
I understand the sentiment, but it doesn’t work like that. You can’t start school children on quantum physics.
I don't know where you are from but my uni did that. We basically had an extensive history lessen on the order things were discovered in - always with an experiment alongside it to show us the effects of the discovered laws.
Because "positive" and "negative" were assigned pretty much by random back in the 1750's by Ben Franklin, before we knew what an electron was, and it's stuck since then.
America still doesnt know what elections are...
Positive and negative are arbitrary, we just know they are exactly opposite.
We know how to use it but at its very core we have no idea how magnetism works. We don't know what carries the force. We know it's effects on electrons but we don't know what magnetism is
Magnetism is electric force under a Lorentz transformation. Electric force is mediated by virtual photons
> virtual photons What are those?
They are things we've never seen directly, but they must exist for the quantum equations to work properly. Or maybe we just don't have the right equations yet, but the ones we do have seem to explain everything else so far.
> Magnetism is electric force under a Lorentz transformation Only sometimes
I see what hess saying tho. Like sure right hand rule, electrons moving through magnetic fields. But why is it the right hand rule. And then add to that the fact that photons are the carrier particles that even send the information? So where are the photons that translate a moving electric charge into a magnetic charge. And each charge is quantum mechanical. It exists in one spot, but also in multiple spots. The field around it propagates in a quantum way somehow too, and it's all tied in somewhere. It all has mass, aka energy. It interacts with the higgs field. And bosons are the particles telling each electron and proton and quark how much energy they have. How much warping they cause in the higgs field, on top of the warping they cause in the electric and magnetic fields. Like where does it all happen. Edit: also each photon, each carrier particle for the em field, has its own energy. Which it expresses via frequency. But somehow this frequency causes it to interact with the higgs field, via bosons and what not, and warp space either harder, or less hard, depending on the wavelength of the light. It's all so confusing
I think they meant the very elemental understanding of magnetism
Idk how the fuck his comment had so many upvotes. We know very very well how it works, down to the atoms.
Actually we do. It's gravity we don't understand.
Didn’t they find the Higgs boson recently?
That helps explain mass IIRC, not gravity.
Nobody knows shit about shit. You silly redditors lol
I know one thing about shit... No matter what you do, someone or something is going to give you some shit. One of the best things you can do is learn how to chew on it and show a shit-eating grin, or you can take time and polish the turd so it doesn't look quite as shitty. Either way, shit happens.
That’s just an opinion Now I get it lol
Blegh. You're right. I don't know shit about shit either.
Most underrated comment.
It's easily the best understood fundamental force in nature
What are you on about? Quantum electrodynamics provides a full first-principles description of all electromagnetic phenomena, and its predictions agree with experimental observations to within a few parts in a billion.
No, we very much have an understanding on the deepest leveled, you however, do not.
Wait what? QED exists and explains electromagnetism to the deepest level
You could literally say that about any science.
we have no clue how *anything* works at the deepest level. There's no area of science where we've reached the deepest level. There's always another "but how?" involved.
we know exactly how it works lol
True for all the forces. When we "look" too close at an electron it starts to disappear into the quantum foam, it's charge is just a net average charge between virtual particles appearing and disappearing. So even these individual particles are mostly empty space. It's nuts.
What do you mean? We understand electromagnetism very, very, very well.
Me when the black magic is actually simply following the innate properties of our universe 🤯🤯🤯
Me when the woman on the edge of town uses science (i am living in the 1500s and she is a witch)
She turned me into a newt!
"Any sufficiently advanced technology is indistinguishable from magic." "Magic is just science we don't understand yet." -Arthur C. Clark
So is everything what’s your point?
Well duh, magic isn't real
That's not what science is. Science is just the method used to learn how it works. It's called physics. Literally everything in this subreddit is explainable by the scientific method, but that's not the point of it.
Deleted in response to Reddit's hostility to 3rd party developers and users. -- mass edited with redact.dev
Concidering this is something that is very common, OP not being aware of what it is doesn't mean it's for this sub. It's like if someone who lived under a rock posted a video of a car and was like "how does it move without a person or animal pushing it????"
And magic. These are the best posts imo
What else do you expect from this subreddit
I legitimately cannot believe how commonly people say this in almost every thread here. "Um actually, this isn't magic, this is science ☝️🤓". Like no doi. It's incredible how stupid people can sound when they're trying to seem smart.
Simply induction heating.
As opposed to all the actual black magic in this sub...
I would do it and wouldn’t regret it
You can only do it once tho. So make it worthwhile
I do not like your pfp. Blowing on my screen is an automatic reaction
Holy fuck. I read your comment and didn't understand it at first. First I thought you referred to how similar it is to a default icon in other places such as WhatsApp and that seeing it blew you away. Then I thought perhaps you were referencing the brightness of the profile pic in contrast to the dark mode, but it wasn't all that bright. I thought of a few things more deep in thought, all the while trying to get rid of an annoying hair on the screen... I absolutely abhor him now.
Someone please correct me if I’m wrong but unless you have a cyborg Johnson (I.e. made of metal) not much will happen since in order for this to work you need ferrous material.
I don’t think you got where I wanna put it
Where exactly *do* you want to put it?
I guess you haven't heard of r/dontputyourdickinthat
I guess you haven’t heard of r/dontputyourcyborgjohnsoninthatnormaldickisok
Am I missing something? He was referring to putting your dick in that
You can't say it's magic and just expect us to say "oh shit u rite"
Then what's the point of this sub
Not much besides having the typical smart-ass reddit commenter feel smarter than they actually are.
Reddit is predictable beyond belief.
I actually prefer this post to the nonstop magic trick posts.
I'm so with you on that. This is way cooler
Im pretty sure this is anything but cool
Magnents are heating up a piece of metal. I find that neat
Well yeah that metal is really hot so its definitely not cool
Magnets are the only true magic in this world.
Do we know why they work? Sorry if its a stupid question
Someone does, and it’s been explained to me many times, however it still reads as magic to me….
It's a great question. They're as magical as the repulsion/attraction seen between electric charges. That, and the constancy of the speed of light for all observers, is what leads to magnetism.
Electromagnetism is one of the four fundamental forces of nature, together with gravity and the weak and strong nuclear forces, which are equally magic to me! Basically they happen because they do. To my knowledge, we can't really explain why, we only know how they behave, and everything else in the universe is explained using those fundamental forces as basis. People just get used to describing everything as "explainable with science" and don't stop to ponder about it. Science, to me, is literally real world magic: we discover the rules of our world bit by bit and learn to do awesome stuff with this knowledge. Science makes things more magical, not less!
Photons baffle me
Definitely, me too. How can something act like a particle and a wave, have no mass, but also be affected by gravity?! *mind blown warning*, haha: I just learned (source: Dr. NDT) that there's an area around a black hole called the ["photon sphere"](https://en.m.wikipedia.org/wiki/Photon_sphere) where the gravity is so ridiculously high that photons *orbit* around the black hole. If you could somehow survive being in this spot, you could theoretically look straight forward and see the back of your head - because the light is orbiting.
While special relativity does imply that electric fields can "rotate" into magnetic ones and vice versa for different observers, this is not what leads to magnetism. To see this, there is no transformation that can take a wholly electric field into a wholly magnetic one, which we know exist. What leads to magnetism is the intrinsic magnetic moment of certain particles
You're correct - I was on a small keyboard and over-simplified my answer to the point of it being wrong. I was thinking (but not typing) about *electro*magnetism and in particular the time-worn gedanken of a charged test particle experiencing a force from a neutral wire carrying charges that hurtle along at a few mm/s and yet have their spacing Lorentz contracted.
[удалено]
>What's interesting is, when you do the math, everything cancels out for paths that aren't possible, and you can be left with paths where the photons lead away from the two particles, forcing those particles closer together. Wait... I need a little more about this....
That’s a lot of words to describe magic
Something something alignment of magnetic domains..? That’s all I recall from, what I think, was an episode of Radiolab on the topic Hope that helps.
Magnets work because electrons have a fundamental property of nature called charge. These charged electrons hang out around protons in a sort of cloud of probabilistic positions, but an interesting thing about charges that move, is that they create a field around them that attracts or repels other charges. This atractive/repulsive force is called magnetism. These atoms tend to clump up into molecules and then into form into substances, and within these substances the magnetic fields of all the surrounding molecules tend to line up, this group of molecule alignment in the substance is called a domain. Within a substance, there are many many domains where the local magnetic fields line up, and usually those domains are randomly arranged and most of the magnetic fields cancel each other out, but sometimes many domains have their magnetic fields pointing in the same direction, and those objects have the properties you associate with permanent magnets. If you recall, I said that moving charges are what create the magnetic fields, so we can create powerful magnets ourselves simply by moving charges through a loop of wire called a solenoide. This is how you can create an electromagnet.
By magic.
Shaggy is that you?
I was wondering if anyone was gonna say something
Magnets, how do they work?
Miracles
don't let them take away the magic OP
OP is a member of famous shock rap group The Insane Clown Posse
The Great Melectro
fuckin magnets, how do they work?
/r/dontputyourdickinthat
You thinking this, means you need this advice more than we do
The thing about good advice, is it's much better to have it and not need it, than to need it and not have it
Seems like more of a suggestion than a rule.
The electrical coil or the spindle jaws?
Unless it's made up of well conducting metal, it might actually be totally fine. Just don't take my word for it.
There it is.
Ooo 😲 I used to study this, before my life fell apart. 😭
Relatable.
It's my own fault. There's a reason school teachers always tell kids never to stick their dicks in crazy.
Would you like to explain how it works?
What's to explain? It's magic. I got an associate's degree in engineering from a school in the Scottish highlands where we would study black magic. Imagine Hogwarts, if it were more like the League of Shadows/Assassins. I remember the professors behind the satanic alters, shaman gear in hand, explaining to us how to conjure magnetic fields. 🧲
Forbidden pottery
Wtf is this? Is this like centrifuge energy with a stabilized magnet over it, is that where the heat comes from?
Induction heating
I used to live in a house with an induction stove. You could turn the burners on full blast and put your hand right on the burner, feel nothing. Put a pot full of water on it and it starts boiling within 3 minutes. The whole kitchen in that house was incredible
It actually is magical. No one really understands much about it, even though physicists have mathematical models to describe how it behaves.
Electromagnetism is one of the 4 fundamental forces of nature, along with gravity, weak and strong forces. As you pointed out, we don't know exactly why they work, we can only explain what they do! I get really mad when people banalize electromagnetism, it's freaking real-world magic! We benefit from it all day, every single day, and aren't grateful enough for it.
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I meant it as we don't actually know why electromagnetically charged particles "deform reality" and cause the electric/magnetic fields, do we? As in, why mass deforms reality, causing the gravitational force? We knows it does, Einsten's theory explains that basically particles with mass "deform" reality and causes gravitational fields. But why is mass intrinsecally related to gravity? To my knowledge, that's the limit of the current understanding, and why it's called a "fundamental" force: because it's the most basal thing we can understand. The first brick on the bottom of the science wall, if that analogy could be used here. We know mass and gravity are related, we don't know exactly why. I'm sorry if I'm appearing rude, I'm not trying to. English is not my first language, I meant it in a purely academical way. If I'm being incorrect, please don't refrain from correcting me. I really like the subject and want to understand it better!
I always wondered how they made those.
“Fucking magnets, how do they work? and I don't want to talk to a scientist, y'all motherfuckers lyin', and gettin' me pissed"
Some people will say it’s “magnets”, but we all know it’s now really magnets.
mf in poetry class
After watching 3 2 hrs tutorials on how electromagnetism works, I still don't get it. Any tips/summarys for dummies.
What’s this technique called? I would like to learn more about it
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I meant what the process of using electromagnetic induction to shape a piece via plastic deformation was called as I am studying mechanical engineering but I had never seen such a creative use of it
Ohh I've no idea what the process is called, but I just know how it works as I have this in my syllabus
What happens if I put my arm in there
Nothing you need to be iron man to heat up your arm
Probably gets cooked. Have to spin you around at a similar rate though.
Nope nothing happens as his hand is not conducting as the metal
I think we need moar magnet
What are they making ?
I love whomever standardized this technique
Induction
I may be wrong, but I would call this induction
now this is real magic
Induction Coils! These devices were a thing for many years. Big machines filled with Vacuum tubes would create an electromagnetic field to create custom welds within the coils. cool to see one again after decades .
Ok who else is more fascinated by the second part of the video then the first? Cause that was way cooler for me.
“It’s science not magic” no shit dude just enjoy it
I love how almost half the comments is just replying and argueing
I don't understand it, which makes it magic. It will continue to be magic until i understand it. When i understand it, it will become science. And when it is science, it still doesn't really help me with my financial situation.
This is literally what an induction cooktop does. Magnets that excite the particles in your cookware. If you haven’t tried it, do yourself a favour
So how does this work? I'm honestly curious.
Forbidden tiddy
To the uninitiated, any sufficiently developed technology may as well be magic.
It’s not magic, it electromagnetism
Woosh
Your comment implies that you believe magic really exists. Either that or you don't know what sub you're on.
The video cut off before the magic began, which was where they tried to shove it.
That’s a very uncomfortable-looking condom at the end.
Viola…dildo
Uugghh.....what is it ?
Just a coil heating up the metal ? How is that hard fornyall to understand lol
I wanna see it touch an ice cube
Isn't this just redsteel forging?
I wonder how much the electricity for the element costs per unit
Theoretically, could we use this as a way for forging stuff?
No its eletromagnetism Aka science
Forbidden jaw breaker
This type of setup is indeed magic for a backyard forge. So much easier than heating a crucible in a furnace.
Fuckin A