Why didn't the positively charged fur repel the glass fibers? I think protons do not repel.

How do you get the matrix, M = [1 L; 0 1]?

Thanks so much sir

alcool is the answer left and rigth work cos alcool

WHAT HE SAID WAS I can actually show you that with a real charged beam. So this is an evacuated tube and it puts a big negative potential on this electrode. So high that it actually boils, electrons come off the electrode and makes just a beam of electrons. It also has some ionized, a little bit of a background gas that ionizes to keep everything stable and doesn't charge up too much. But mostly you have electrons flying off this electrode and most of them go straight to this metal plate and that's the end of the story. But there's a little slit in the plate. So some of them get through and make a beam that keeps going. So you've got a beam of electrons and this little plate is tilted a little bit so they slowly along this direction they crash into the plate. The plate has a phosphor on it so it lights up when they crash into the plate. So when I turn it on, there you can see the beam. That's a beam of electrons flying through the tube. So what we're going to do is bring a magnet and see what it does to the beam of electrons because remember this bar magnet, the field lines go from the north pole, the red is the north pole to the south pole. So if we just think about the poles or the field right at the ends because we're going to use the ends, it will be this way near the north and it will be pointing in in the south. So I will bring the north pole pointing at me at the beam and let's see what that will be. We have the beam going this way and I'm going to bring this pointing in so we're going to have a B field like this. So V cross B also the same as this. It should be up. So let's see what happens. There's our beam and I bring in this magnet. There's the deflection we hope for but it's down and it's down and why is it down? It's down because they're electrons. Q in this case equals negative E. The charge is negative. When the charge is negative the force magnitude is negative which means it goes the opposite direction. So right hand rule says it's up for positive but the force is down. for an electron. So it did deflect the right way. It deflected down. We can also check. We can take and aim the south pole at the beam. So here we go. Bring in the south pole. And there it goes. It deflects up, just like you'd expect. Because when you're bringing the south pole, the magnetic field is pointing the opposite direction. Now I'm bringing in a field that's pointing away from the beam. So it would seem that the charged particle beam really is deflected the direction that you would expect.

What an explanation ❤

If only yor black board permits a visible reading websre blessed professor.

😮

whaaaat... whoa. thank you for the demo. haven't seen someone do a practical of that before.

math

Goated professor

Physics can only be easy if you know how to solve complex concepts such as calculations and formulas

Physics is hrd when you dont listen

Thank you sir...

Thanks for this demonstration [yes, I'm almost a decade late, but heck, for me that's timely].

its 3 am and i cant get enough of your demos!!! every one of them is really really interesting and helps in understanding the concepts a lot!!! thank you so much for your work sir

Respect for becoming a conductor for our amusement.

Dear Professor let's apply Tungsten mold on a cube of 10Cm3 solid block of Iodine.Now we heat Tungsten so that Iodine molecules dissociate into electronegative iodine atom and draws electron from Tungsten.The Iodine will not be able to withdraw more electrons than 10^18 electrons and form Iodine negative ions.Rest iodine atoms will be intact and try to draw more electrons.If it worked dielectric breakdown is not an issue as at a given point It will not attract more than 10^18 electrons and Iodine atoms will try to attract electrons only not really gains it.Its a hypothetical theory one needs to verify.❤This high voltage is for breaking Water molecules I need your opinion over it.

Maine State Police are torturing me with constant seismicity. They dialed in the frequency to the most biotoxic, i.e. 8-9 Hertz.

next is how to quantify (magnetohydrodynamic formulas) this phenomenon for a non-purposeful & purposeful application i.e arc blast explosion & arc furnace steel production , the energy balance equations to produce the effects thnks for the wonderful instructional video

Thankyou sir for explaining

Lmaooo😂😂🩴

Lots you do not know about toroid's !

Techer tanks from 🇪🇹Ethiopia

omg ty goat

Love youuuuu

Advanced math is a lot like religion.You just gotta have faith that it works

Watching from india..thanks prof.

my method: acc will be same everywhere on rope, so we can say, tension should be 150N (i.e mg) to just lift the body. so on monkey side, 150 - 100 = 10a a › 5

Best teacher ever

Thank you!

Great mind bender for the curious. Thanks!

Thanks

I'm afraid that you made a mistake here. As far as i can tell you can't explain Diamagnetism with a Lorentz-force perpendicular to the current loop. Because that could never change the angular momentum (conservation of angular momentum) and if the angular momentum doesn't change the magnetic moment wouldn't change. So that can't explain diamagnetism. I tried to make this work for a week now and i wasn't able to. My conclusion is that you have to use electromagnetic induction to explain Diamagnetism classically. The induced voltage in the loop can indeed change the angular momentum and therefore the magnetic moment. I can mention relevant sources that go through all the necessary derivations, if anyone is interested in the details.

Why your hair is so longg ?

They always erase the board before I am done writing it down. --> Me...1980,81,82,83.

You are literarly the best, I wish my profs were like you....

bro i can't believe i found these videos before my final

I thought that you were a girl in the thumbnail.

How can we mathematically prove that the phase lag is 90 degrees?

so we cant calculate magnetic field in the center of loop with ampere's lwas?

Excellent! Thank you.

Excellent lecture. Thank you so much!

Thanks, professor. Hal in energy minimum

It's hard because most teachers are not suited to teach it. Would had want to go to such University....shit happened.

😂

This guy doesn't explain anything...

Why would unpolarized light be expressed as [1,1]?

What happened to the right hand rule?

It's been so long, but THANK YOU! From Brazil 🙏🙏