Pressure inside an ideal soap bubble

Description

The pressure inside an ideal (one surface) soap bubble can be derived from thermodynamic free energy considerations. At constant temperature and in equilibrium, when the pressure inside the bubble is equal to the pressure outside of the bubble, is related to surface tension and the radius of the bubble

Related formulas

Variables

PPressure (Pa)
γSurface tension (N/m)
RbubbleRadius of bubble (m)