Absolute zero
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Absolute zero is the theoretically coldest temperature, a state at which a system's internal energy, and in ideal cases entropy, reach their minimum values. The Kelvin scale is defined so that absolut
Robert Boyle, who pioneered the idea of an absolute zero.
Commemorative plaque in Leiden
The rapid expansion of gases leaving the Boomerang Nebula, a bi-polar, filamentary, likely proto-planetary nebula in Centaurus, has a temperature of 1 K, the lowest observed outside of a laboratory.
Entropy
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Entropy is a thermodynamic state variable that quantifies the probabilistic distribution of accessible microstates in a system. The term and the concept are used in diverse fields, from classical ther
Absolute zero
…Absolute zero is the theoretically coldest temperature, a state at which a system's internal energy, and in ideal cases entropy, reach their minimum values. The Kelvin scale is defined so that absolute zero is 0 K, equivalent to −273.15 °C on the Celsius scale, and −459.67 °F…
Fragmentation of standardized paper sheets into heterogeneous offcuts through industrial cutting, illustrating increased entropy in a production system.
Rudolf Clausius (1822–1888), originator of the concept of entropy