James12345678 Messages 4 Reaction score 0 Thread starter Mar 10, 2015 #1 What type of gas would change the colour of an electron beam as the speed of the electrons increases?
What type of gas would change the colour of an electron beam as the speed of the electrons increases?
davenn Science Advisor Gold Member Messages 9,736 Reaction score 11,895 Mar 10, 2015 #2 Hi there James welcome to PF an electron beam doesn't have a colour but exciting a gas with a beam of electrons will cause the gas to glow this is called fluorescence have a look at this wiki link http://en.wikipedia.org/wiki/Cathode_ray cheers Dave Last edited: Mar 10, 2015
Hi there James welcome to PF an electron beam doesn't have a colour but exciting a gas with a beam of electrons will cause the gas to glow this is called fluorescence have a look at this wiki link http://en.wikipedia.org/wiki/Cathode_ray cheers Dave