I'm trying to understand electricity and there for electrons. And so far i believe i am grasping it. But there are a few parts i have a hard time understanding.
For example in as i understand it, in electricity there must be a closed loop in order for the electrons to move. But when i apply this knowledge to CRT's and Electron guns it kinda gets messy. I get most parts of the electron gun, but not how it actually produces electrons, because it dosnt seem to be a closed circut. I read somewhere that most electrons get back to the anode but if only "most" electrons get back wouldt the crt or electron gun actually stop working after a while, because it would bleed to many electrons in the end ?
In a old fashined crt, with a cathode and anode on each side (the class tube one) i can grasp how it can keep going forever, or at least as long as you provide it with current. But in new type of crt where you have an electric gun, i cant really understand how it can keep going.