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| Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other?? |
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| PlainName:
--- Quote ---So, no. "It's raining" and "Tt's sunny" are not two different points of view. One is right, the other one isn't. --- End quote --- So how do you get rainbows? |
| electrodacus:
--- Quote from: Sredni on June 23, 2022, 05:27:34 am ---Anyway, I found the links to Lewin's statement of the problem: --- End quote --- Lewin is just a clown that has not even basic understanding of physics. I watched a bit of the videos (not fully) first part of each enough to know what the problem is. This is the same mistake he made when electroBoom tried to correct him (not sure what happened with that interaction). In any case it seems he got the correct solution from one profesor is just that he is way to lost to understand it. There will be an electric current induced in the superconductor and that will create an opposing magnetic field. That is how the magnet or the superconductor coil can levitate when using a superconductor. With normal conductor that has resistance the same thing happens but since there is loss as heat it can not levitate it just slows the fall down. Maybe you have seen the typical experiment where you drop a magnet through a copper pipe (if not search on youtube) and you can easily notice how much the drop of the magnet under gravity is slowed down by the opposing magnetic field. If that pipe was made of a superconductor material so no resistance the magnet will never exit the other side as there will be no loss with zero resistance. There are plenty of examples of levitating superconductor rings above magnets so you can search for that also. |
| Sredni:
--- Quote from: dunkemhigh on June 23, 2022, 01:05:32 pm --- --- Quote ---So, no. "It's raining" and "Tt's sunny" are not two different points of view. One is right, the other one isn't. --- End quote --- So how do you get rainbows? --- End quote --- What took you so long? ;D I confess that I was expecting something on the lines of "It can be raining in NY and be sunny in LA", but I guess it's equivalent. Can you tell me what time is it? |
| PlainName:
Somewhere, it will shortly be beer'o'clock. |
| rfeecs:
--- Quote from: Sredni on June 22, 2022, 07:15:36 pm ---...once in the superconducting material they continue 'by inertia' --- End quote --- Hm. I wonder how they turn a corner. Apparently they aren't like sheep, guided by the field from the surface charge. Perhaps they are guided by the surface potential or some other quantum mumbo jumbo. Or perhaps they hug the wire. No wait. It must be related to charging a capacitor. It must be too much beer'o'clock if that's possible. |
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