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bar magnet

bar magnet

3.7
A straight rectangular piece of metal that attracts iron and has opposite poles at each end
  • noun
  • /bɑr ˈmæɡnɪt/
  • Specialized
translation icon : imán de barra
  • Flux lines come out this way from the bar magnet and this way.

In fact, Ampere and Faraday both looked at the iron filings around a small coil and a bar magnet and found they looked identical.

Examples

  • In fact, Ampere and Faraday both looked at the iron filings around a small coil and a bar magnet and found they looked identical.

  • Thus, a bar magnet may be suspended with the use of a tied string dangling in the air.

    Academic text (2001)
  • Here the pupils may use bar magnets to establish ideas pertaining to the north and south poles of a magnet.

    Academic text (2001)
  • A second bar magnet may be used to notice which side attracts and which repels when the opposite sides are near the dangling bar magnet.

    Academic text (2001)
  • Students can experiment with a bar magnet to discover which end attracts paper clips.

  • In physics class, we learned how a bar magnet has distinct north and south poles.

  • A bar magnet can be used to demonstrate magnetic fields with the help of iron filings.

Synonyms

magnet
vsbar magnet
180 1.8

A piece of metal that attracts iron or steel

is straight and rectangular with poles at each end rather than any magnetic object
magnetic dipole
vsbar magnet
  • Specialized
6.3

An object with two opposite poles, like a bar magnet, that makes a force around it

is a straight rectangular object with poles at each end

Surface Forms

bar magnet singular
bar magnets plural

Morphology

bar + magnet

The meaning is directly compositional: a 'magnet' that has the shape of a 'bar' (a long, rigid piece), so the compound denotes a magnet in the form of a bar. This is a simple noun-noun descriptive pattern that is cross-linguistically common and should be clear to a B1 learner who knows both constituents.

Etymology

Bar magnet comes from its shape: a straight piece of metal that is a bar and is also a magnet. Because the metal has a strong 'north' end and a strong 'south' end, the name helps explain why it pulls iron and moves compass needles.