In measurement of non-faradaic admittance (or tensammetry), a plot of @A00252@ against @A00424@ shows a minimum or maximum when a non-@E01940@ undergoes @A00155@ or @D01620@ at the surface of the @I03006@. Such a maximum or minimum may be called an @A00411@ to emphasize its non-faradaic origin and distinguish it from a 'summit', which would result from a charge-transfer process. The highest value of the current on such an @A00411@ may be called an @A00411@ current, and the corresponding @A00424@ may be called an @A00413@.