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Properties of canal rays

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Goldstein  (1886)  used  perforated  cathode  in  the  discharge  tube and repeated Thomson's experiment and observed the formation of anode rays. These rays also termed as positive or canal rays.

  

Anode rays travel in straight line.

  

                 Unlike cathode rays, their e/m value is dependent upon  the nature of the gas taken in the tube. It is maximum when gas present in the tube is hydrogen

  

These rays produce flashes of light on ZnS screen.

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