Quantities (I)
illuminance \(E\),\(E_{\text{v}}\)impact parameter \(b\)impedance \(Z\)inhibitory concentration \(\text{IC}\)inhibitory dose \(\text{ID}\)inner electric potential \(\phi\)integral capacitance internal absorptance \(\alpha_{\text{i}}\)internal energy \(U\)interparticle porosity \(\varepsilon\)interparticle volume of the column \(V_{0}\)intrinsic activation energy \(E_{\text{a,i}}\)ionic conductivity ionic strength \(I\)ionic transport number \(t\)ionization energy \(E_{\text{i}}\)irradiance (at a point of a surface) \(E\)