The majority of shipmounted weapons are beam-based. That is, they fire particles in phase (organized and unidirectional) at or close to the speed of light. The two well-known forms of beam-based weaponry rely on the photon and electron, respectively. Space beam weapons, unlike sidearms and rifles used by ground forces, have a peculiar nomenclature. There is little correlation in the naming conventions between the two. The following table specifies the manufacturer name of the types of beam guns.