equation of state

noun

Physics.

1. an equation relating the temperature, pressure, and volume of a given thermodynamic system.

equation of state

noun

1. any equation that expresses the relationship between the temperature, pressure, and volume of a substance

Example Sentences

Physicists seek accurate measurements of neutron stars’ masses and radii, which would help reveal their “equation of state”—the relationship between pressure and density within these stars.

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Knowing the neutron star equation of state would in turn indicate what kind of matter hides inside them.

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The equation of state they derived predicted that a neutron star containing the mass of 1.4 suns would have a radius of about 11.75 kilometers, plus or minus .81 to .86 km.

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In the process, she realized that the landscape for neutron-star research—in particular, the question of the equation of state—should look very different by then.

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With this precision, the group will be well placed to begin plotting out what is known as the neutron-star equation of state, which relates mass to radius or, equivalently, internal pressure to density.

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