Question

who discovered the canal Ray's ​

Answer 1

Answer:

One of the first spectrometers using such ion sources was that of Dempster [21]. He managed to use only magnetic bending. Goldstein had discovered canal rays by the light they emitted when travelling through gases and by the fluorescent patch they produced on the wall of the discharge tube.

Explanation:

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Answer 2

Answer:

An anode ray (also positive ray or canal ray) is a beam of positive ions that is created by certain types of gas-discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886. Later work on anode rays by Wilhelm Wien and J. J.