Tačka slane je temperatura na kojoj, hlađenjem vazduha bez promene pritiska, vodena para postaje zasićena, ali u odnosu na led. Tačka rose na ternperaturama ispod 0°C je niža od tačke slane.
Termodinamika sa termotehnikom, Đorđević B, Valent V, Šerbanović S., 2000.
Termin:
frost point
Definicija:
The dew point when temperatures are below freezing; the temperature to which a given parcel of humid air must be cooled, at constant barometric pressure, for water vapor to be deposited on a surface as ice without going through the liquid phase.