How does a vacuum diode work?

A vacuum diode consists of a glass bottle from which air is evacuated. Anode and cathode are located inside the balloon. The anode looks like a cylinder. Inside this cylinder is the cathode, which is a slip-on metal tube.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.