bar magnet


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bar magnet

[′bär ‚mag·nət]
(electromagnetism)
A bar of hard steel that has been strongly magnetized and holds its magnetism, thereby serving as a permanent magnet.
References in periodicals archive ?
Here the pupils may use bar magnets to establish ideas pertaining to the north and south pole of a magnet.
In the late eighteenth century, Franz Anton Mesmer used bar magnets and hypnotic "animal magnetism" (mesmerization) to treat patients.
wand or bar magnet Step 1: Measure 125 ml (1/2 cup) of the cereal and
Ampere also demonstrated that a current flowing through a wire bent into a helix (similar in shape to a bed spring) strengthened the magnetic effect with each turn of the wire, and the helix clearly acted like a bar magnet with a north pole and a south pole.
They found that at an atomic scale, the atoms arrange themselves in a grid of microscopic domains, each of which behaves like a small bar magnet.
The material to be treated is conveyed through an electrode array where an RF alternating energy field causes polar molecules in the material to continuously reorient them to face opposite poles much like the way a bar magnet would behave in an alternating magnetic field.
They also show that each chondrule is magnetized like a little bar magnet, but with 'north' pointing in random directions," Desch said.
Each fundamental particle behaves like a very tiny bar magnet or compass needle," explains Stefan Ulmer, a particle physicist at RIKEN in Wako, Japan.
A cycle starts with the Sun's magnetic field weak and dipolar--like a giant bar magnet.
It's as if a bar magnet slowly lost its magnetic field and regained it in the opposite direction, so the positive side becomes the negative side.
Each focus group was also given the opportunity to play with and observe the behaviour of one permanent bar magnet and a peg with a metal spring.
Take the meter stick and move the bar magnet over the metal objects on the floor.