Birch–Murnaghan equation of state

The Birch–Murnaghan isothermal equation of state, published in 1947 by Francis Birch of Harvard, is a relationship between the volume of a body and the pressure to which it is subjected. This equation is named after Albert Francis Birch and Francis Dominic Murnaghan. Birch proposed this equation in a publication in 1947, based on the work of the Murnaghan of Johns Hopkins University published in 1944.