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thermal equilibrium

thermal equilibrium

1 6.4
A state where all parts have the same temperature and no heat flows between them
  • noun
  • /ˈθɜrməl ˌiːkwɪˈlɪbriəm/
  • Specialized
translation icon : equilibrio térmico
  • The real physics is quite subtle because the detector is in IR thermal equilibrium with the gas column.

Of course, that's a state of thermal equilibrium.

Examples

  • The two objects were placed in the same environment until they reached thermal equilibrium and had equal temperatures.

  • The universe was sufficiently small to have achieved thermal equilibrium at very early times, and it maintained this as it inflated.

    Academic text (2002)
  • But is this hot volume in thermal equilibrium?

    Academic text (2003)
  • It's rather hard to bring radiation in the room into thermal equilibrium with the air.

  • Experiments must determine to what extent the system is in thermal equilibrium.

    Academic text (2003)
  • OK, so let's calculate how fast particles move at thermal equilibrium in room temperature.

  • Notice that before inflating, the tiny initial universe could have achieved thermal equilibrium.

    Academic text (2002)
  • At thermal equilibrium, increasing the strength of the magnetic field induces abrupt jumps of the Fermi level at particular field values.

    Academic text (1994)
  • Even though there is a non-uniform temperature distribution, the column of gas will still be in thermal equilibrium because the non-uniformity simply arises due to the decreasing density of the atmosphere with altitude.

    Blog text (18)
  • As you say, in a perfectly transparent atmosphere with no lateral heat transport, there would be no surface warming caused by the atmosphere, because the atmosphere would be in quasi-static thermal equilibrium with the surface and would not lose energy at all on the outside (air-vacuum) interface.

    Blog text (18)

How Thermalized

thermal equilibrium
  • Specialized
1 6.4
thermalization
  • Specialized
9.1

Surface Forms

Morphology

thermal + equilibrium

The term is directly compositional: 'thermal' (relating to heat) modifies 'equilibrium' (a stable state), so a learner who knows both words can infer a stable state with respect to temperature/no heat flow. Although somewhat technical, the adjective+noun composition and the concept have clear parallels in other languages, making the meaning predictable for a B1 learner who knows the constituents.

Etymology

Thermal equilibrium with thermal meaning heat and equilibrium meaning balance paints a simple picture: two things reach the same temperature so no heat moves between them. That's why thermal equilibrium means 'all parts have the same temperature and no heat flows'.