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In this video, we look at two devices that both use electromagnets. These are the relay and door-bell.

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Image credits: [ Ссылка ]

Ernest Rutherford
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Ernest Marsden
S P Andrew Ltd (1921)
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Doorbell
HNH
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Music credit: Deliberate Thought by Kevin MacLeod is licensed under a Creative Commons Attribution licence ([ Ссылка ])
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