Before revision: 320px|Maximum Power Principle in Energy Systems Language adapted from Odum and Odum 2000, p. 38 The maximum power principle or Lotka's principle has been proposed as the fourth principle of energetics in open system thermodynamics , where an example of an open system is a biological cell .
After revision: 320px|Maximum Power Principle in Energy Systems Language adapted from Odum and Odum 2000, p. 38 The maximum power principle or Lotka's principle has been proposed as the fourth principle of energetics in open system thermodynamics .