Internal structure of a magnet
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Simulation:
Ferromagnetic materials are made from many small elementary magnets and can be magnetized and demagnetized.
Englisch, Spanisch (CREA), Deutsch
25.06.2021
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A collection of three independent simulations illustrates the essential properties of ferromagnetic materials. The physical principles are each summarized in a mnemonic that can be displayed and hidden. The simulations in detail:
• A magnet is disassembled. The inner structure made of elementary magnets (Weiss domains) becomes clear.
• The elementary magnets in a ferromagnetic material are aligned in an external magnetic field. The material becomes magnetized, and becomes a magnet itself.
• A magnetized material is exposed to heat or mechanical force and thus loses its magnetization. It becomes demagnetized.
Information and ideas:
The students can verify the illustrated facts in simple experiments.
• A magnet is disassembled. The inner structure made of elementary magnets (Weiss domains) becomes clear.
• The elementary magnets in a ferromagnetic material are aligned in an external magnetic field. The material becomes magnetized, and becomes a magnet itself.
• A magnetized material is exposed to heat or mechanical force and thus loses its magnetization. It becomes demagnetized.
Information and ideas:
The students can verify the illustrated facts in simple experiments.
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Information sheet; Simulation
Physics; Technology
Grade 7 to 9; Grade 10 to 13
Middle/high school
Magnetism
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