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Magnet pulling iron strips out of copper strips

Magnet pulling iron strips out of copper strips

A230/0067

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Credit

CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY

Caption

Magnetism. Horseshoe magnet pulling iron strips out from a mixed pile of copper and iron strips. Magnetism is a manifestation of one of the funda- mental forces of physics: electromagnetism. Iron filings display very strong magnetic effects known as ferromagnetism. The magnetic effects are due to moving subatomic particles called electrons. They have an angular momentum (spin) which gives them a magnetic moment so that each filing acts like a tiny bar magnet. In iron the electrons' magnetic moments point in the same direction when a magnetic field is applied. The moments add up to make the iron strips act like bar magnets and so be attracted towards the original magnet.

Release details

Model release not required. Property release not required.

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