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carmatic
- 92
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i have a set of neodynium magnets which i am using for a magnetic levitation project... will the constant exposure to an opposing magnetic field weaken the magnets over time? are 'permenant' magnets really permenant?
Permanent magnets produce long term magnetic repulsion due to their unique atomic structure. The individual atoms in a permanent magnet are aligned in the same direction, creating a strong magnetic field that repels other objects with a similar alignment of atoms.
Yes, over time permanent magnets can lose their ability to repel due to a process called demagnetization. This can occur if the magnet is exposed to high temperatures, strong magnetic fields, or physical damage.
The strength of long term magnetic repulsion is affected by the size, shape, and composition of the permanent magnets. Additionally, the distance between the magnets and any external magnetic fields can also impact the strength of repulsion.
Yes, the direction of magnetic repulsion in permanent magnets can be changed by altering the orientation of the magnets. This can be done by physically rotating the magnets or by using other external magnetic fields to change their alignment.
Long term magnetic repulsion has many practical applications, such as in magnetic levitation systems, magnetic bearings, and magnetic separation processes. It is also used in various industrial and medical devices, including MRI machines and electric motors.