Second law of thermodynamics
The second law of thermodynamics may be expressed in many specific ways, the most prominent classical statements being the statement by Rudolf Clausius (1854), the statement by Lord Kelvin (1851), and the statement in axiomatic thermodynamics by Constantin Carathéodory (1909). These statements cast the law in general physical terms citing the impossibility of certain processes. The Clausius and the Kelvin statements have been shown to be equivalent.
Adrian Bejan
Adrian Bejan is a Romanian-American professor who has made contributions to modern thermodynamics and developed what he calls the constructal law. He is J. A. Jones Distinguished Professor of Mechanical Engineering at Duke University and author of the 2016 book "The Physics of Life: The Evolution of Everything".