Understanding Cathode Ray Discharge and Electron Knockout

AI Thread Summary
Applying high voltage across electrodes in a low-pressure discharge tube causes electrical energy to knock out electrons from atoms, creating cathode rays. This process typically involves thermal emission from a hot cathode, akin to vacuum tube technology. The discussion seeks further clarification on the mechanisms behind how electrical energy ejects electrons. Additionally, the Williams Tube, a CRT used for memory storage, is mentioned as an interesting historical note. Understanding these principles is essential for grasping the functionality of cathode ray tubes and related technologies.
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When a high voltage is applied across the electrodes of the discharge tube, and the pressure of the gas inside the tube is lowered, the electrical energy knocks out some of the electrons from the atoms. These constitute the cathode rays. How does electrical energy knocks out electrons is something I want to know. Please explain.
 
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