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Like the MagLev trains? Or different?That block is a magnet. When you move a magnet next to a conductor, the movement of the magnetic field pushes on the electrons in the conductor, and accelerates them off, forming a current. Everything obeys Newton's laws, so the electrons also push back on the magnet.
Like the MagLev trains? Or different?
Neato.
Of course, nobody really knows how magnets work, anyway. I mean, yes, we know they they push or pull. We still don't know why.
Are you sure on that, Bill? Isn't that what Maxwell's theory on electromagnetism was about? http://www.astrohandbook.com/ch12/EMFT_Book.pdf
Ohttp://www.astrohandbook.com/ch12/EMFT_Book.pdfr do you mean in a "why is water wet?" kind of way?
Of course, nobody really knows how magnets work, anyway. I mean, yes, we know they they push or pull. We still don't know why.
Magnets are easy. They're like people. Some things like each other, some things don't. If they like each other -- they try to hug. If they don't, they push each other away.Of course, nobody really knows how magnets work, anyway. I mean, yes, we know they they push or pull. We still don't know why.
Magnets are easy. They're like people. Some things like each other, some things don't. If they like each other -- they try to hug. If they don't, they push each other away.
Every description of magnetism begins from the assumption that there is a 'force' that exists, and then attempts to explain why it works. None of them explain what that force is, except by being self-referential....We also have no idea why some materials are ferrous and magnetic and others are ferrous and not magnetic.
I don't pretend to understand it, but this article on Wikipedia explains the quantum-mechanic origin of the magnetic field and why some materials make good magnets and others do not. The model that led to it was apparently developed in 1927.
The slow motion falling is one of the coolest things I've seen lately.