Deposition
The direct phase transition of a gas into a solid without passing through an intermediate liquid phase.
Governing formula
ΔH_dep = -ΔH_sub
SI unit
J/kg or J/mol
In depth
Exothermic phase transformation releasing heat equal to heat of sublimation. Common in sub-zero atmospheric vapor conditions.
Examples in the real world
Frost forming on window panes during sub-freezing winter nights as water vapor in air deposits directly as ice crystals.