How Long Can Magnets Maintain Their Properties in a Repelling Magnetic Field?

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Permanent magnets can maintain their magnetic properties for years, depending on the material and environmental factors such as temperature and exposure to stray magnetic fields. In an ideal scenario where two magnets repel each other and one levitates, they can retain their magnetism indefinitely if not disturbed. However, external influences like heat can negatively impact their longevity. The discussion highlights the importance of understanding the specific type of magnet when considering its durability in a repelling magnetic field. Overall, permanent magnets are designed to last long under optimal conditions.
The_Thinker
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Just a few simple questions about magnets:

1) If 2 permanent magnets are placed one on top of the other such that one magnet repels the other and therefore the second magnet levitates and assuming that this is a ideal situation and the magnet is not knocked off its vertical levitating position, how long would the two magnets maintain their magnetic properties? - basically how long would 2 permanent magnets last in a repelling magnetic field without losing its magnetic properties?

2) If a have 2 cylinders like shown in the diagram, with the two cylinders repelling each other... how long would the magnets last?

Thanks... :)
 

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How long a permanent magnet keeps its magnetism depends on several factors - mainly the material its made from and its environment. Heating magnets is bad for them, as are stray magnetic fields. A good magnet will stay magnetic for years. Pretend you want to buy a magnet and do a web search.

I don't understand the diagram.
 

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