This quantity is constant in isobaric processes and inversely proportional to volume in Boyle's Law.
Measurements of heat capacity where this quantity is constant produce larger values than those at constant volume. This quantity can be defined as temperature times the partial of entropy with respect to volume. Intensity over the speed of light gives one version of this quantity when light is absorbed, and when the light is reflected the radiation type of this quantity is doubled. This quantity is constant in isobaric processes and inversely proportional to volume in Boyle's Law. For 10 points, name this scalar quantity with units of Pascals that is defined as force per unit area.
Measurements of heat capacity where this quantity is constant produce larger values than those at constant volume.
pressure