Physics Ontology

One map of physics, three ways in. Drill down on any quantity to see its units, the equations it lives in, and how its values span the universe.

← Back to all quantities
LL
Thermodynamics

Latent Heat

Energy per unit mass absorbed or released during a change of state.

SI unit

joule per kilogram (J/kg)

Dimension: [L2T2][\,L^2 T^{-2}\,]

Other units

  • joule per kilogram (J/kg)

Order of magnitude

How values of latent heat span the physical world (in J/kg, log scale).

Fusion of ice
3.34 × 105 J/kg
Vaporisation of water
2.26 × 106 J/kg
Lower limit104 J/kgUpper limit107 J/kg

Appears in 1 equation

Latent Heat
ΔE=LΔm\Delta E = L\Delta m