Preferred Label : Drude–Nernst equation (for electrostriction);
IUPAC definition : Equation describing the contraction (ΔVel) taking place in a dielectric medium of
relative static permittivity ɛr (formerly called dielectric constant) upon introduction
of an ion of charge number z and radius r: \[Δ V_{{el}} -\frac{\left ( z\,e \right
) {2}}{2\,r\,\varepsilon_{{r}}}\frac{ \left ( {ln}\varepsilon_{{r}}\right)}{ \,p}\]
with e the elementary charge.;
Scope note : inasmuch as the derivative of ¿ r with respect to pressure, ¿ r p ,is
not known for all media, there are approximations to evaluate this term as a function
of ¿ r and of the isothermal compressibility of the medium, ¿t.;
Origin ID : DT07364;
See also
Equation describing the contraction (ΔVel) taking place in a dielectric medium of
relative static permittivity ɛr (formerly called dielectric constant) upon introduction
of an ion of charge number z and radius r: \[Δ V_{{el}} -\frac{\left ( z\,e \right
) {2}}{2\,r\,\varepsilon_{{r}}}\frac{ \left ( {ln}\varepsilon_{{r}}\right)}{ \,p}\]
with e the elementary charge.
