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Isothermal vs Adiabatic - What's the difference?

isothermal | adiabatic |

As adjectives the difference between isothermal and adiabatic

is that isothermal is of or pertaining to a process that takes place at constant temperature while adiabatic is that occurs without gain or loss of heat (and thus with no change in entropy, in the quasistatic approximation).

As a noun isothermal

is an isotherm.

isothermal

English

Adjective

(head)
  • Of or pertaining to a process that takes place at constant temperature
  • Of or pertaining to an isotherm
  • Derived terms

    (derived terms) * isothermal annealing * isothermal atmosphere * isothermal calorimiter * isothermal chart * isothermal compression * isothermal equilibrium * isothermal expansion * isothermal flow * isothermal layer * isothermal magnetization * isothermal parameterization * isothermal remanent magnetization * isothermal titration calorimiter * isothermal transformation * isothermal treatment

    Noun

    (en noun)
  • (geography) An isotherm
  • Anagrams

    * * *

    adiabatic

    English

    Adjective

    (-)
  • (physics, thermodynamics, of a process) That occurs without gain or loss of heat (and thus with no change in entropy, in the quasistatic approximation).
  • * 2006 , Thomas Pynchon, Against the Day , Vintage 2007, p. 737:
  • Talk of dynamic compression and adiabatic gradients didn't carry as much weight as the certainty of its conscious intent.
  • (physics, quantum mechanics, of a process) That involves the slow change of the Hamiltonian of a system from its initial value to a final value.
  • * 1961 , Albert Messiah, Quantum Mechanics , Volume II, page 740,
  • In this section we examine the limiting cases when T is very small (sudden change) and very large (adiabatic change).

    Antonyms

    * (thermodynamics) diabatic * (quantum mechanics) non-adiabatic

    Derived terms

    * adiabat * adiabatically * subadiabatic * superadiabatic