# Gyroradius

## Description

The gyroradius (also known as radius of gyration, Larmor radius or cyclotron radius) is the radius of the circular motion of a charged particle in the presence of a uniform magnetic field. In SI units, the gyroradius is given by the shown formula.

Related formulas## Variables

r_{g} | gyroradius (dimensionless) |

m | mass of the particle (dimensionless) |

v_{p} | velocity's perpendicular component to the magnetic field (dimensionless) |

q | particle charge (dimensionless) |

B | magnetic field (dimensionless) |