5223 Cathode ray tube with whirl

5223 Cathode ray tube with whirl View larger
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5223

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5223 Cathode ray tube with whirl

This tube enables you to show the mechanical effects of cathode rays. In fact a small, fluorescent whirl , which can rotate with little friction, starts spinning the moment the cathode ray beam hits it. To be used with 5cm Spark induction coil.

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