This is seriously underrated....The explanation was so gooooood!!! And you were obviously very confident and fluid in your speaking! The lecture was grtt!!
I understand the part where charge particle is made to spiral in a uniform B field. However, if a charge particle is made to spiral, it should radiate EM wave out according to Maxwell equations. So, there is EM energy radiating out from the charge and if energy is to be conserved, the spiraling has to come to a stop. Therefore, the uniform B field should in principle stop all spiraling motion of the charge particle by dissipating the orthogonal KE into radiating EM energy.
Pretty helpful, but the first part threw me off when the particle was drawn as circling across the B-field lines. Normally I see the guiding centre parallel to the B-field line whereas there is also the gyration around a singular B-field line. The part that's confusing further is how the kinematic and magnetic pressures are related. Sometimes I see the ratio, beta changing as the particle travels and other times it remaining constant. Anywho, one question is that although v_parallel is zero (being mirrored) and the v_perpendicular is at the max value. The question is when the particle is at the midplane, v_parallel is max. Here would we also consider the v_perpendicular to equal zero?
Static B field can never do work on charge particle. Because in the example, the components of velocity may change but the net velocity remains constant thus the total kinetic energy is constant throughout so no work is really being done in the process.
Hi, my notes say that in a non uniform B field, there will always be a force acting from a region of stronger B field to weaker B field. Does that mean that when a particle move from left to right, assuming left has a stronger B field, that it will speed up? Since the force is acting with it. But when it travels from weaker to stronger B field, the force is acting against it which will cause the particle to reverse direction?
But the field doesn't accelerate the particle back or forth it just changes the direction the particle is going in. If it accelerated the particle in any direction it would be doing work on the charge and that isn't possible. Right?
Right. The B field applies a force to the particle, so it must change the particle's velocity, but it only changes the direction of velocity, not the magnitude.
@@Prof-Hafner Idk man I was making this presentation on magnetic confinement for hours, and your 6 minute video is the best explanation I've found in so long. You're a genius to me.
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This is seriously underrated....The explanation was so gooooood!!! And you were obviously very confident and fluid in your speaking! The lecture was grtt!!
Much more clear than my textbook, thanks!
The best explanation on the internet about magnetic bottle! Thank you so much. Great professor!
Woah you explained it quite well!
This concept will forever be trapped in my mind bottle, thanks to you
I finally got it thanks to you!!!
Loved it man!!!
Wow just amazing
I understand the part where charge particle is made to spiral in a uniform B field. However, if a charge particle is made to spiral, it should radiate EM wave out according to Maxwell equations. So, there is EM energy radiating out from the charge and if energy is to be conserved, the spiraling has to come to a stop. Therefore, the uniform B field should in principle stop all spiraling motion of the charge particle by dissipating the orthogonal KE into radiating EM energy.
Professor you are awesome!!
I am from India I can say that he teaches like HC Verma sir IIT professor ,IITs are India's best colleges
Thank you 😃
Like a true Texan 5:00
Pretty helpful, but the first part threw me off when the particle was drawn as circling across the B-field lines. Normally I see the guiding centre parallel to the B-field line whereas there is also the gyration around a singular B-field line. The part that's confusing further is how the kinematic and magnetic pressures are related. Sometimes I see the ratio, beta changing as the particle travels and other times it remaining constant. Anywho, one question is that although v_parallel is zero (being mirrored) and the v_perpendicular is at the max value. The question is when the particle is at the midplane, v_parallel is max. Here would we also consider the v_perpendicular to equal zero?
Static B field can never do work on charge particle. Because in the example, the components of velocity may change but the net velocity remains constant thus the total kinetic energy is constant throughout so no work is really being done in the process.
Hi, my notes say that in a non uniform B field, there will always be a force acting from a region of stronger B field to weaker B field. Does that mean that when a particle move from left to right, assuming left has a stronger B field, that it will speed up? Since the force is acting with it. But when it travels from weaker to stronger B field, the force is acting against it which will cause the particle to reverse direction?
You're amazing
But the field doesn't accelerate the particle back or forth it just changes the direction the particle is going in. If it accelerated the particle in any direction it would be doing work on the charge and that isn't possible. Right?
Right. The B field applies a force to the particle, so it must change the particle's velocity, but it only changes the direction of velocity, not the magnitude.
can you do some math please
sir ur a FUCKING GENIUS
Thanks but not really.
@@Prof-Hafner Idk man I was making this presentation on magnetic confinement for hours, and your 6 minute video is the best explanation I've found in so long. You're a genius to me.
Carl Sagan vibes
I KNOW RIGHT