# Bulk Modulus - volume

## Description

The bulk modulus ( or ) of a substance measures the substance’s resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume.

Related formulas## Variables

K | bulk modulus (>0) (pascal) |

V | volume (m^{3}) |

δ_{P} | pressure (pascal) |

δ_{V} | volume (m^{3}) |