PIRA 5G10.00 MAGNETS

DCS #DEMONSTRATIONREFERENCEABSTRACT
5G10.00Magnets
5G10.10magnet assortmentPIRA 500
5G10.10magnet assortment5G10.10
5G10.13letters on magnetsAJP 55(1),10Remarkably. the letters on the magnet are two the the three that can be read from either end or in a mirror.
5G10.14various magnetsE-6cVarious magnets are pictured.
5G10.14strong magnetsE-6dVarious strong magnets are shown.
5G10.15lodestonePIRA 1000
5G10.15lodestone5G10.15Show that the lodestone attracts small nails.
5G10.16lodestone suspendedPIRA 1000
5G10.16lodestoneEr-5Magnetite is suspended in a magnetic field.
5G10.16permanent magnetsE-84Pick up nails with a cobalt steel magnet. Also - levitation, elastic collisions.
5G10.16lodestoneE-77Two pieces of magnetite in paper stirrups come to rest on the magnetic meridian. Poles are identified and repulsion and attraction are demonstrated.
5G10.16lodestoneDisc 19-02A large lodestone is suspended in a cradle with the south pole painted white. A bar magnet is used to show attraction and repulsion.
5G10.20break a magnetPIRA 500
5G10.20break a magnet5G10.20Show a magnet attracts nails, break it and repeat.
5G10.20forming new magnetic polesEr-12Break a magnet.
5G10.20break a magnetE-93Magnets of hard or hardened steel are broken and the pieces shown to be magnetized.
5G10.20broken magnetDisc 19-05A broken magnet still exhibits north and south poles.
5G10.30Which is a magnet?PIRA 1000
5G10.30magnet and non-magnetEs-9Two bars look alike, one is a magnet and the other is not.
5G10.30Which is a magnet?E-85With two similar bars of iron, one magnetized, use the end of one to lift the middle of the other.
5G10.35two south pole magnetE-79How to induce four poles in a knitting needle, the same poles at each end.
5G10.36no pole magnet32-3.5Make a circularly polarized magnet in a steel ring and then break it in half.
5G10.50lowest energy configuration of magnetsPIRA 1000
5G10.50magnetic interactionsAJP 33(4),346Magnets float in water with the north pole up constrained by a ring magnet. Place up to 22 magnets in the tub and show equilibrium configurations.
5G10.50lowest energy configurationDisc 19-06Magnets held vertically in corks are placed in a dish of water. When a coil around the dish is energized, the magnets move to the lowest energy configuration.
5G10.90cast magnetic fieldTPT 3(5),226Iron filings are cast in gelatin.
5G10.90magnetic monopoleEr-13Iron filings cast in acrylic over one pole of a magnet.
5G10.90isolated poleE-81An "isolated pole" is demonstrated by passing a long magnetized knitting needle through a cork and floating it on water.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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