# The nature of cathode rays and canal rays

by DevPhysics
Tags: canal, cathode, nature, rays
 P: 11 Hello everyone, I have some questions about these rays. And i would be grateful if you could help me, 1- The nature of cathode rays doesnt depend on neither the gas in the tube nor the material of the electrodes. Why? 2-The nature of canal rays depends on the gas in the tube. Why? 3- Does the nature of canal rays also depend on the material of the electrodes? Thank you and have a great day.
 Sci Advisor PF Gold P: 1,111 Is this a homework question? If yes, please give an attempt at a solution. In any case, start by looking at Wikipedia http://en.wikipedia.org/wiki/Anode_ray http://en.wikipedia.org/wiki/Cathode_ray and come back if you still have specific questions.
 P: 11 Hi dr, This isn t for homework. These are some questions that stuck in my mind while studying. And i have checked the links already. All of the questions are specific. And i couldn t find a proper answer. That is why i am asking these questions here Thanks
PF Gold
P: 1,111

## The nature of cathode rays and canal rays

Your first two questions can be answered by considering: what are cathode rays and canal rays composed of?
 P: 11 Thanks but this doesn t answer my questions properly. I have looked for the links as yoy said but all of them just says like "each gas gives different charge to mass ratio (anode rays) ..." I want to know "why". Thanks
 Admin P: 22,703 Say, you have samples of helium and argon. Say, each has been ionized by removing a single electron. Calculate mass/charge ratio. Are they identical?
 P: 11 Ooh so i am removing same number of electrons from the gases. In this case their charge will be the same (+1) but their mass will be different because of their proton and notron numbers (mass). But when it comes to cathode rays, if i increase the number electrons, their charge and mass ratio won t change. I get it now thank you so much. And about the 3rd questions . So the nature of anode rays doesnt depend on the material of electrodes. It only depends on the gas right?