Why the cathode rays always are considered to be consist of fundamental common particles called electrons?
Answers
Answer:
Cathode rays (electron beam or e-beam) are streams of electrons observed in vacuum tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode (the electrode connected to the negative terminal of the voltage supply). They were first observed in 1869 by German physicist Julius Plücker and Johann Wilhelm Hittorf,[1] and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays.[2][3] In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a previously unknown negatively charged particle, which was later named the electron. Cathode ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to render an image on a screen.
Explanation:
when the pressure is very low and voltage is very high in the discharge tube
the gas present in it ioniz and forms
-e+(gas)+
so everytime electrons released moves from negative to positive electrode
and that is why cathode rays cost of fundamental common particles called electrons