The useful idea
- The useful idea
Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.
- How it works
Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism.
- Why it matters
The familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves.
Why this matters
Look for Magnetism the next time you notice this pattern in everyday life.
Try this
Look for Magnetism the next time you notice this pattern in everyday life.
Test your recall
Which idea belongs to the explanation of Magnetism?
- How it works
- The useful idea — correct
- Why it matters
Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other.