Question

explain the canal rays experiment.

Answer 1

An anode ray is beam  of positive ions that is created by certain types of gas discharges tubes. they were first observed in crookes tubes during experiments by the german scientist Eugen goldstein , in 1886 .

Answer 2

The existence of electrons in an atom was done by J.J Thomson in 1897.

Thomson explained the cathode rays as follows.
The gas taken in the discharge tube consists of atoms, and all atoms contain electrons, when high electric voltage is applied, the electrical energy pushes out some of the electrons from the atom of the gas
The fast moving electrons form cathode rays,
Thus, the formation of cathode rays shows that one of the subatomic particles present in all atoms is the negatively charged electron.
Electron is a negatively charged particles found in atoms of all the elements.

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