Oct 11
Everything you always wanted to Know about magnets but were afraid to ask??
Magnets can be made by placing a magnetic material such as iron or steel, in a strong magnetic field. Permanent, temporary and electromagnets can be made in this manner.
Background information for Magnets
- What are magnets?
- What are temporary magnets ?
- What are permanent magnets?
- What are electromagnets?
- What are superconductors?
- How did it all begin?
- Who discovered magnets?
- Who were the scientists who helped us to understand magnets?
- What is magnetite?
- What are magnetic force fields?
- What is the rule of magnetism?
- How does a compass work?
- Who first used a compass?
- Digging deeper into terrestrial magnetism.
What are some uses of magnets?
The atoms forming materials that can be easily magnetized such as iron, steel, nickel, and cobalt are arranged in small units, called domains. Each domain, although microscopic in size, contains millions of billions of atoms and each domain acts like a small magnet. If a magnetic material is placed in a strong magnetic field, the individual domains, which normally point in all directions, gradually swing around into the direction of the field. They also take over neighboring domains. When most of the domains are aligned in the field, the material becomes a magnet.
Posted by Jay Roberts at 03:06 AM | Permalink
