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Chemistry Forums for Students => Organic Chemistry Forum => Organic Chemistry Forum for Graduate Students and Professionals => Topic started by: Neetisha on May 23, 2016, 11:14:29 AM

Title: cathode ray
Post by: Neetisha on May 23, 2016, 11:14:29 AM

Electrons of cathode rays are of cathode metal or gas filled in the discharged tube?

Title: Re: cathode ray
Post by: Enthalpy on May 23, 2016, 11:19:30 AM

If there is enough gas to sustain a discharge, most electrons originate in the ionization of that gas.

In vacuum, the electron source is the cathode (or the walls, or or...).

So both modes exist and their behaviour is very different. The tubes use to bear different names.