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rolnor
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I wonder if it would work to cast a thick-waled bowl of bismuth and drop a magnet into it, would not that levitate the magnet? I have seen other setups but they seems more complicated.
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Welcome to the PF.rolnor said:I wonder if it would work to cast a thick-waled bowl of bismuth and drop a magnet into it, would not that levitate the magnet? I have seen other setups but they seems more complicated.
OK, so iron is very much stronger magnetic than the graphite or bismuth, iron is paramagnetic and the other two are diamagnetic. If bismuth was as strong diamagnetic as iron is paramagnetic maby my idee would work.rumborak said:Yeah. The problem is that while bismuth, and even more so pyrolite graphite is diamagnetic, it is still very weakly so. So, the diamagnetism can levitate a paper-thin sheet of graphite, but for levitating a magnet on its own it is too weak. That's where the regular magnet comes into play, to do the heavy lifting, and the graphite or bismuth only corrects the very small horizontal forces.
Is it possible to explaine the difference between these three without using a lot of quantum-math? I am an organic chemist and it was a long time since I read physics.nasu said:Iron at room temperature is ferromagnetic. If it were just paramagnetic, the effect would likely be comparable (as week as) for bismuth. Just with opposite sign - attraction and not repulsion.
Levitating a magnet in a Bismuth bowl works through the principle of diamagnetism. Bismuth is a diamagnetic material, meaning it creates a magnetic field in the opposite direction of an applied magnetic field. This creates a repulsive force that can levitate a magnet above the bowl.
The materials needed for levitating a magnet in a Bismuth bowl include a strong neodymium magnet, a Bismuth bowl, and a non-magnetic base to hold the bowl in place. You may also need a small adjustable stand to fine-tune the height of the magnet.
No, only strong neodymium magnets can be levitated in a Bismuth bowl. These magnets have a strong enough magnetic field to overcome the weight of the magnet and any external forces, such as gravity.
The height of the levitating magnet can be adjusted by carefully moving the magnet closer or further away from the center of the Bismuth bowl. A small adjustable stand can also be used to fine-tune the height.
Levitating a magnet in a Bismuth bowl is mainly used for educational and entertainment purposes. However, some researchers are exploring the potential use of diamagnetic materials, like Bismuth, for levitation in various applications such as transportation and medical devices.