Chapter 4 discusses isothermal compressibility, \(\kappa_T\), an important thermodynamic quantity that aids in understanding various thermodynamic processes. The text explores historical insights by I...Chapter 4 discusses isothermal compressibility, \(\kappa_T\), an important thermodynamic quantity that aids in understanding various thermodynamic processes. The text explores historical insights by Isaac Newton, who miscalculated the speed of sound due to an assumption of isothermal compression, rather than adiabatic compression as later corrected by Pierre-Simon Laplace.