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Electrons in our lives
The development of modern technologies has depended on our understanding of the properties of electrons.

Here are four significant items from the collections of the Science Museum (www.nmsi.ac.uk/) that have successfully harnessed these properties for the benefit of all mankind.
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Emitron camera tube, 1935
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Randall and Boot's cavity magnetron, 1940
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Original radar receiver, 1935
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Crooke's Maltese Cross tube, c1875

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