2 docs tagged with "physics"

Entropy is a fundamental concept in physics that measures the thermal energy per unit temperature that is unavailable for doing useful work. It is also a measure of the molecular disorder or randomness of a system. Introduced by physicist Rudolf Clausius in 1850, the concept of entropy provides deep insight into the direction of spontaneous change in various phenomena.

Freeman Dyson, a renowned mathematical physicist and gifted writer, was known for his clarity of thought and expression. Despite his small stature and old-fashioned attire, Dyson's intellectual presence was immense. An American citizen since 1957, he retained a strong English accent and was both direct and unassumingly friendly.