What is a Tube Rejuvenator and how did it work you knew a guy when you were a kid who used one for Catching Snakes?

Answer It is the about the same as a stunt gun or a protter that output a high voltage with very little current when used to rejuvenate a tube it is connected to the tubes cathode and the high voltage pulls remove the scale that is formed on the cathode over years and one can say that it open the way for the electrons to flow easer from the cathode to the anode, and yes it can be used for catching snakes but not to be tried if you don't know what you are doing, it can be lethal.