Yes, it is capsulated Inside. And if a ring coil is put Inside the toroidal one, its magnetic field will be toroidal - so each coil will penetrate eachothers magnetic fields.
Now I understand why toroidal transformers are said to be better for sensitive audio applications, there's virtually no magnetic influence outside that ring, wow.
It would be good to do the same experiment in the orthogonal plane to the plane in the video. There is a (smaller) magnetic field perpendicular, similar to a normal coil.
I was expecting you sprinkle the iron fillings outside the loop to demonstrate the magnetic effect immediately outside the coil. The fillings inside the coils exactly aliened with the circular magnetic field in the loop.
@@rad9693 This has nothing to do with induced current; the current in the coiled wire is direct current. The metal filings get magnetized and line up with the field. Lots of filings outside the coil, but the magnetic field drops off very quickly, look closely though you can still see lines a couple millimeters around the wire holes.
I'm super curious to compare this field with a tubular ring of same dimensions containing a conductive fluid or plasma carrying the same current as the copper wire does in this apparatus. I think its because of the interior ring i love how its producing such a usable geometry
Do you guys really not get it? This is an inductor and those aren't magnetic lines? That's a reflected induced charge in the coil. Those are current vectors. The magnetic field is 90° out of phase and perpendicular toward charge. How is this not obvious? There's a magnetic torus inside each coil with centripetal tension tugging the electrical potential toward charge. Yes. Electrical potential is carried toward charge. Magnetic fields are perpendicular to electrical fields and they both cannot reciprocate a dipole that is hysterical.
Interesting. At first glance the filings appear to make rings inside the coil. However, they really weave back and forth across each other 2 dimensionally. I'll wager this implies some spiraling effect in 3 dimensions. I wonder if you slowy increased voltage would the 2 dimensional pattern come into more focus? maybe just a little less shavings.
i often feel iron filings produce the wrong idea. there is a 3d thing... the filings only sit on a plate, after all. interesting to see it in water. some type of transparent fluid with just enough goop to make things visible... and with that.. its not really interweaved. its following the path of least resistance. least reluctance, really. theres so much magnetic flux in the coil. one filing by itself will saturate, line up, and thats it.. a dozen will magnetise, produce enough force to make a line of some type... but the rest of the flux just keeps on being flux. as you keep adding filings, more flux passes through them rather than the air. (though its still only a thin layer and we dont see the rest of the torus...) but always bearing in mind like poles repel, so as the filings magnetise and form lower reluctance path, they also repel from each other. rather than form a solid bar, they have to spread out into a lace structure. and on that note, a solid ring inside it would be interesting. because theres these strange things about coils... how does the conductor (Secondary of a transformer, say) know that there is a field inside the core, if all the flux is in the core and none is getting out? i dont see lines of force cutting conductors...
What if you made a toroidal coil out of wound copper wire. For example, how a guitar string is wound. How would it affect the direction of the magnetic field?
no. it would act just like an air core coil, as copper has a permeability much the same as air. brass would reduce the inductance. it has a lower permeability than air. iron and the other ferrous metals increase inductance by orders of magnitude... really high permeability.
An unimaginably fine substance, which the ancients called ether ;) The modern names are quantum foam, virtual particles, zero point energy, or simply "field".
@@hyparh But if you watch Sean Carroll's videos, he says something like 'you can't ask what fields are made of, they are what make up the universe'. The Standard Model of particle physics doesn't include anything that makes up the fields. They vibrate and can form particles, but as to what is vibrating, it's a mystery .
Suppose you pointed the toroid to the sun with the plane of the toroid at 90 degrees to the sin and plasma composing the solar wind were to pass through the torus, then the protons and electrons interacting with the magnetic field would be deflected to inward or outward. If the protons are deflected inward then electrons would be deflected outward, but there would be no torque to make it rotate. If one side of the torus faced the sun with the plane of the torus pointing to the sun, then electrons would be deflected to one side and protons deflected to the other side on the the sun facing side of the torus, and the reverse happens on the back side, non sun facing side of the torus. But the net forces between electron current and proton current balance and thus produce no net forces. But maybe because electrons are deflected more because they are lighter, there might be an imbalance of forces and if so, it might cause torque. You'll have to do a deeper analysis.
I just watched 30 seconds of someone sprinkling magnetic conductive dust on a coil. But they didn't turn it on. Is something wrong with TH-cam? Doesn't seem like that's the full video
Many videos explain how to mathematically derive the expression for the magnetic field, but don't show any experiments. This video is the opposite. So they complement each other. I don't really see a problem with that.
Do you know that your video is being blocked from my youtube? I can't see anything but computer-created simulation of static on an old analog TV. It says 26,088 views, but no likes, and no dislikes. How? Why? Why can't i see this video. I will keep checking on this. This is a new, crappy behavior of TH-cam. Why is TH-cam starting to block what videos i can see?
These videos were created during the COVID lock downs so that instructors could put them in their presentations. The videos have no explanation because the instructors provided the explanation for the video.
Something is fishy in this video. Notice #1: There is two apparent planes in the image. Plane1 is the surface onto which the apparatus is standing ( the table ) . Plane2 is the plexiglass surface. Notice#2: The toroidal coil is positioned on Plane2 . Notice#3: The distance between Plane1 and Plane2 is equivalent to the length of the apparatus legs ( or standoffs ). The fishy thing: Someone took the so much complicated task of enrolling the toroidal coil through each single holes on the plexiglass as well as through the white sheet of paper, ( Plane2 ) taking extreme care not to tear the paper. A surprisingly immaculate job. Yet, the paper is Also Under the 4 standoffs ( Plane1 ). How can you explain a flat sheet of paper existing on two parallel planes distant apart of a few centimetres ?
pretty simple really, there is a table, then the paper, yes, the paper is sitting on the table, as you can clearly see the coils under the clear Plexiglas, then everything else is above. Ask yourself at 6 seconds in, how can you see the coils under the plexiglas? Easy, the paper is on the table.
Ozzy3333333 , I get it. Great observation. For some reason I could not grasp the fact that the paper was, indeed, completely under the whole coil. I had this illusion that the paper was right in the middle of the coil, which didn't make any sense in my mind.
Ask your professor about the basis for a tocomac! Imagine a thick hollow glass toroid containing a ferromercurial/cobalt suspension. Pulse electromagnetic field wound arround the toroid (not a single coil but thousands of individual coils) in sequence. Start slowly & the mixture will center in the toroid. As you accelerate ( increase frequency), that fluid if mixed in correct proportions will become a plasma. Once you approach near relativistic speed look at the corona effect. Then, look at the weight of the non metallic platform this circuit is attached to! Surprise!!!
You make me pull out my hair. There is no field you are showing, the field is invisible to the human eye, you must measure it with a gauss meter. When you throw iron fillings around magnets, each iron filing becomes magnetized all what you are showing is the relationship between one big magnet and thousands of small magnets not the pattern of a pure magnetic field. That takes more effort, get a gauss meter and measure millimetre by millimetre, just stop this.
But these do show the field lines as the iron filings lie along the magnetic field direction. Yes the field is an invisible quantity which is ideally represented in a continuous way but for representation purposes this is perfectly fine
they have represented an reflected induced charge in the coil. not the direction of magnetic field vectors. why cant people understand it? also your bald
I love my magnetic fields with a little pepper and olive oil
Medium or rare?
What about salt?
I wish you showed more and different angles. Thanks for this though!
It looks like almost all the field is inside the loops.
Yes, it is capsulated Inside. And if a ring coil is put Inside the toroidal one, its magnetic field will be toroidal - so each coil will penetrate eachothers magnetic fields.
Now I understand why toroidal transformers are said to be better for sensitive audio applications, there's virtually no magnetic influence outside that ring, wow.
It would be good to do the same experiment in the orthogonal plane to the plane in the video. There is a (smaller) magnetic field perpendicular, similar to a normal coil.
Nice observation
This is also exactly how plasma flows inside a tokamak fusion reactor
I was expecting you sprinkle the iron fillings outside the loop to demonstrate the magnetic effect immediately outside the coil. The fillings inside the coils exactly aliened with the circular magnetic field in the loop.
I was thinking the same. The particles basically showed the induced current rather than the Toroidal magnetic field
@@rad9693 This has nothing to do with induced current; the current in the coiled wire is direct current. The metal filings get magnetized and line up with the field. Lots of filings outside the coil, but the magnetic field drops off very quickly, look closely though you can still see lines a couple millimeters around the wire holes.
Its the most perfect shape!
How did I not know this. Thanks for the demonstration 🙂 a very interesting phenomenon.
I'm super curious to compare this field with a tubular ring of same dimensions containing a conductive fluid or plasma carrying the same current as the copper wire does in this apparatus.
I think its because of the interior ring i love how its producing such a usable geometry
Very satisfying :) Thanks for the upload
Is the toroid energized, and at what voltage/amperage?
Do you guys really not get it? This is an inductor and those aren't magnetic lines?
That's a reflected induced charge in the coil. Those are current vectors. The magnetic field is 90° out of phase and perpendicular toward charge. How is this not obvious?
There's a magnetic torus inside each coil with centripetal tension tugging the electrical potential toward charge. Yes. Electrical potential is carried toward charge.
Magnetic fields are perpendicular to electrical fields and they both cannot reciprocate a dipole that is hysterical.
oh its way easier to understand what you said by take a small area on the toroid.
Interesting. At first glance the filings appear to make rings inside the coil. However, they really weave back and forth across each other 2 dimensionally. I'll wager this implies some spiraling effect in 3 dimensions.
I wonder if you slowy increased voltage would the 2 dimensional pattern come into more focus? maybe just a little less shavings.
i often feel iron filings produce the wrong idea.
there is a 3d thing... the filings only sit on a plate, after all. interesting to see it in water. some type of transparent fluid with just enough goop to make things visible...
and with that.. its not really interweaved. its following the path of least resistance. least reluctance, really.
theres so much magnetic flux in the coil. one filing by itself will saturate, line up, and thats it..
a dozen will magnetise, produce enough force to make a line of some type... but the rest of the flux just keeps on being flux.
as you keep adding filings, more flux passes through them rather than the air. (though its still only a thin layer and we dont see the rest of the torus...)
but always bearing in mind like poles repel, so as the filings magnetise and form lower reluctance path, they also repel from each other. rather than form a solid bar, they have to spread out into a lace structure.
and on that note, a solid ring inside it would be interesting.
because theres these strange things about coils...
how does the conductor (Secondary of a transformer, say) know that there is a field inside the core, if all the flux is in the core and none is getting out?
i dont see lines of force cutting conductors...
I love it! A perfect demonstration!
You didn’t have to say a word! Plain as day!
What if you made a toroidal coil out of wound copper wire. For example, how a guitar string is wound. How would it affect the direction of the magnetic field?
no. it would act just like an air core coil, as copper has a permeability much the same as air.
brass would reduce the inductance. it has a lower permeability than air.
iron and the other ferrous metals increase inductance by orders of magnitude... really high permeability.
That's why I love physics ....
Thanks
I can't get over this, it is just too weird, too amazing. What the f**k are those invisible fields made of?
An unimaginably fine substance, which the ancients called ether ;) The modern names are quantum foam, virtual particles, zero point energy, or simply "field".
@@hyparh But if you watch Sean Carroll's videos, he says something like 'you can't ask what fields are made of, they are what make up the universe'. The Standard Model of particle physics doesn't include anything that makes up the fields. They vibrate and can form particles, but as to what is vibrating, it's a mystery .
Aether
@@lennartlofdahl1612 There is no ether (aether if you insist on 19th century spelling, æther if you want to regress further).
@@jaimetorres950 Yes, the fields are fundamental so far as we know from measurements at the present time.
Wheres the lamb sauce?
What's the imput? No need a resistance? This will blow
If a similar (center of mass in center) apparatus were in outer space, would the fields cause it to rotate?
Suppose you pointed the toroid to the sun with the plane of the toroid at 90 degrees to the sin and plasma composing the solar wind were to pass through the torus, then the protons and electrons interacting with the magnetic field would be deflected to inward or outward. If the protons are deflected inward then electrons would be deflected outward, but there would be no torque to make it rotate.
If one side of the torus faced the sun with the plane of the torus pointing to the sun, then electrons would be deflected to one side and protons deflected to the other side on the the sun facing side of the torus, and the reverse happens on the back side, non sun facing side of the torus. But the net forces between electron current and proton current balance and thus produce no net forces.
But maybe because electrons are deflected more because they are lighter, there might be an imbalance of forces and if so, it might cause torque. You'll have to do a deeper analysis.
insane
Is that a DC or AC current? If it's DC what would happen if AC was used would it make the iron filings move?
@sourand jaded Thanks
This is cool.
ikr
Gorgeous experiment, thanks for sharing
I just watched 30 seconds of someone sprinkling magnetic conductive dust on a coil. But they didn't turn it on. Is something wrong with TH-cam? Doesn't seem like that's the full video
Dude, this is rude. Not only is any magnetic field not evident or even visable, there's no technical explanation either. Why bother.
Many videos explain how to mathematically derive the expression for the magnetic field, but don't show any experiments. This video is the opposite. So they complement each other. I don't really see a problem with that.
The magnetic field lines are clearly visible if you know what too look out for, They are the lines inside the toroid ( circular in shape)
Do you know that your video is being blocked from my youtube? I can't see anything but computer-created simulation of static on an old analog TV. It says 26,088 views, but no likes, and no dislikes. How? Why? Why can't i see this video. I will keep checking on this. This is a new, crappy behavior of TH-cam. Why is TH-cam starting to block what videos i can see?
Try clearing your browser or app cache. When TH-cam restricts something, it says so and if it's regional it says that too.
Is this the best BYU can make as a video and put it up. You could have spent another three or four minutes explaining what it was doing.
These videos were created during the COVID lock downs so that instructors could put them in their presentations. The videos have no explanation because the instructors provided the explanation for the video.
Something is fishy in this video. Notice #1: There is two apparent planes in the image. Plane1 is the surface onto which the apparatus is standing ( the table ) . Plane2 is the plexiglass surface. Notice#2: The toroidal coil is positioned on Plane2 . Notice#3: The distance between Plane1 and Plane2 is equivalent to the length of the apparatus legs ( or standoffs ). The fishy thing: Someone took the so much complicated task of enrolling the toroidal coil through each single holes on the plexiglass as well as through the white sheet of paper, ( Plane2 ) taking extreme care not to tear the paper. A surprisingly immaculate job. Yet, the paper is Also Under the 4 standoffs ( Plane1 ). How can you explain a flat sheet of paper existing on two parallel planes distant apart of a few centimetres ?
pretty simple really, there is a table, then the paper, yes, the paper is sitting on the table, as you can clearly see the coils under the clear Plexiglas, then everything else is above. Ask yourself at 6 seconds in, how can you see the coils under the plexiglas? Easy, the paper is on the table.
Ozzy3333333 , I get it. Great observation. For some reason I could not grasp the fact that the paper was, indeed, completely under the whole coil. I had this illusion that the paper was right in the middle of the coil, which didn't make any sense in my mind.
Ask your professor about the basis for a tocomac! Imagine a thick hollow glass toroid containing a ferromercurial/cobalt suspension. Pulse electromagnetic field wound arround the toroid (not a single coil but thousands of individual coils) in sequence. Start slowly & the mixture will center in the toroid. As you accelerate ( increase frequency), that fluid if mixed in correct proportions will become a plasma. Once you approach near relativistic speed look at the corona effect. Then, look at the weight of the non metallic platform this circuit is attached to! Surprise!!!
2nd to comment
You make me pull out my hair. There is no field you are showing, the field is invisible to the human eye, you must measure it with a gauss meter. When you throw iron fillings around magnets, each iron filing becomes magnetized all what you are showing is the relationship between one big magnet and thousands of small magnets not the pattern of a pure magnetic field. That takes more effort, get a gauss meter and measure millimetre by millimetre, just stop this.
But these do show the field lines as the iron filings lie along the magnetic field direction. Yes the field is an invisible quantity which is ideally represented in a continuous way but for representation purposes this is perfectly fine
they have represented an reflected induced charge in the coil. not the direction of magnetic field vectors. why cant people understand it? also your bald