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21.8: Thinking about the Material
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Reflect and research
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When was magnetism first discovered?
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What is the origin of the word “magnetism”?
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What experiments support that magnetic monopoles do not exist?
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What did J.J. Thomson measure, and how?
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How do debit and credit cards use magnetism?
To try at home
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Attempt to construct a compass using household materials.
To try in the lab
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Propose an experiment to measure the magnitude of Earth’s magnetic field.
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Propose an experiment to construct a galvanometer and test its accuracy.