What symbols have been adopted to identify different types of electrodes?

Different types of electrodes are identified using specific symbols in schematic diagrams. For instance, a standard electrode is often represented by a vertical line, while a reference electrode may be depicted with a triangle or a dot. Additionally, a battery electrode is symbolized with a pair of parallel lines of varying lengths to indicate the positive and negative terminals. These symbols help in easily recognizing the function and type of electrode in electrical and electronic circuits.