This scientist corrected the isotherm of a van der Waals gas by replacing an oscillating section below the critical temperature with a horizontal line splitting the curve into two equal areas. The equality of mixed partial derivatives can be used to derive a set of relations named for this man equating various partials of thermodynamic quantities. This physicist developed a distribution function describing the velocities of molecules in ideal gases that is also named for Boltzmann, and he added a displacement current term to correct Ampere's law. He also conceived of a being that could violate the second law of thermodynamics. For 10 points, name this British scientist who put together the four fundamental equations of electromagnetism and 
This scientist corrected the isotherm of a van der Waals gas by replacing an oscillating section below the critical temperature with a horizontal line splitting the curve into two equal areas. The equality of mixed partial derivatives can be used to derive a set of relations named for this man equating various partials of thermodynamic quantities. This physicist developed a distribution function describing the velocities of molecules in ideal gases that is also named for Boltzmann, and he added a displacement current term to correct Ampere's law. He also conceived of a being that could violate the second law of thermodynamics. For 10 points, name this British scientist who put together the four fundamental equations of electromagnetism and has a namesake demon.
This scientist corrected the isotherm of a van der Waals gas by replacing an oscillating section below the critical temperature with a horizontal line splitting the curve into two equal areas.
James Clerk Maxwell