This equation is known as Freundlich adsorption isotherm or Freundlich adsorption equation. The adsorption can be described by the Langmuir adsorption isotherm if lateral interactions are neglected. These types are a function of the shape of the desiccant's moisture sorption isotherm. Thus, the Freundlich adsorption isotherm fails at higher pressure. Irving Langmuir was the first to derive a scientifically based adsorption isotherm in 1918. The Freundlich isotherm is the most important multisite adsorption isotherm for rough surfaces. The SSA can be measured by adsorption using the BET isotherm. Brunauer, Emmett and Teller derived the first isotherm for multilayer adsorption. The Langmuir isotherm and Freundlich isotherm are useful in describing this equilibrium. This equation is formally equivalent to the Langmuir isotherm. During isothermal expansion, both and change along an isotherm with a constant product. The last expression is the Langmuir isotherm for the surface coverage. The January mean is only colder than the isotherm for the oceanic climate. The breeding habitat of the sanderling is coastal tundra north of July isotherm. As a result, the coldest month just falls short of the isotherm.