Magnets don't "last" in the way that a battery does. They don't run out of power or stop working after a certain amount of time. Magnets are permanent and retain their magnetic properties indefinitely under normal conditions.
Here's why:
- Magnetism is a fundamental property of matter: It arises from the alignment of tiny magnetic domains within a material.
- Permanent magnets are made from materials with strong magnetic domains: These domains are locked into place, creating a sustained magnetic field.
- External factors can weaken magnets: Extreme heat, strong magnetic fields, or physical damage can disrupt the alignment of magnetic domains, reducing the magnet's strength.
So, while magnets can be weakened or damaged, they don't simply "stop working" after a certain number of days. They maintain their magnetic properties for a very long time, making them incredibly useful in various applications.
