WHY ARE CATHODE RAYS ARE CALLED CANAL RAYS?

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Solution

These rays are beams of particles moving in a direction opposite to the "cathode rays," which are streams of electrons which move toward the anode. Goldstein called these positiverays Kanalstrahlen, "channel rays" or "canal rays", because they were produced by the holes or channels in the cathode.

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Why were anode rays also called as 'canal rays'?

Q. Why do cathode rays do not depend upon the material of cathode and anode or the type of gas taken in the discharge tube while the canal rays depend?

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