Cathode

A cathode is the electrode in an electronic device or chemical cell where positive ions gain electrons and become neutral atoms or molecules. In electrical terms, it is the terminal from which current flows out of a device or component. In batteries, the cathode is the positive side, attracting electrons and undergoing reduction reactions. In devices like televisions or CRT monitors, the cathode emits electrons when heated, which then create images or signals. Overall, the cathode plays a key role in facilitating the flow of electrical energy or chemical reactions within various electronic and electrochemical systems.