Kathod

Kathod, also spelled Kathode, is a term derived from Greek, meaning "negative electrode." In the context of electronics and electrochemistry, it refers to the electrode in an electrochemical cell or electrical device where electrons enter the device. This is in contrast to the anode, where electrons leave the device. The term is often used in the context of vacuum tubes, where the kathod is the negatively charged electrode that emits electrons. These electrons are then accelerated towards the positively charged anode, creating a current flow. The kathod is also a key component in cathode ray tubes (CRTs), used in older television and computer monitors, where it emits a beam of electrons that strikes the screen to produce an image. In modern electronics, the term has largely been replaced by terms like "cathode" or "electron source," but it remains a useful term in certain contexts.