| In 1820, Hans Christian Oersted discovered electromagnetism by chance during a class demonstration. |
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 | And I see that when a current is flowing through a wire, the needles of the compasses move! This must mean something! | |
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| The physics textbook doesn't say anything about it though. | |
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| Don't be silly, it is a new discovery. That textbook is long outdated. | |
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| Oh okay | |
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| That's why Sec 4 Physics students have to study electromagnetism | |
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| Hurhur | |
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