Temperature
This article is about the thermodynamic property. For other uses, see Temperature (disambiguation). Temperature Annual mean temperature around the world Common symbols T SI unit kelvin (K) Other units °C, °F, R Intensive? yes Derivations from other quantities pVnR{displaystyle {frac {pV}{nR}}} , dqrevdS{displaystyle {frac {dq_{text{rev}}}{dS}}} Dimension Θ Thermal vibration of a segment of protein alpha helix: The amplitude of the vibrations increases with temperature. Thermodynamics The classical Carnot heat engine Branches Classical Statistical Chemical Quantum thermodynamics Equilibrium / Non-equilibrium Laws Zeroth First Second Third Systems State Equation of state Ideal gas Real gas State of matter Equilibrium Control volume Instruments Processes Isobaric Isochoric Isothermal Adiabatic Isentropic Isenthalpic Quasistatic Polytropic Free expansion Reversibility ...