[PDF] the constant field equation

What is a constant field current equation?

Today, we know it as the constant-field current equation ( Eq. 1 ): where I is the current density carried by ion i, P is the permeability coefficient, z the valence of ion I, V is the membrane voltage, Ci,in and Ci,out are the ion concentrations in the solutions bathing either side of the membrane, and R, T, and F have their usual meaning.

What are Einstein field equations?

In the general theory of relativity, the Einstein field equations ( EFE; also known as Einstein's equations) relate the geometry of spacetime to the distribution of matter within it.

How do you find a constant field in a membrane?

G = P z 2 F 2 c e x R T. There is no need for the assumption that the field is constant within the membrane for the case of univalent cations alone (e.g., Na + and K + in the case of a cation- or anion-selective membrane), as long as the ions are of the same valence.

What is Einstein's cosmological constant?

In cosmology, the cosmological constant (usually denoted by the Greek capital letter lambda: ? ), alternatively called Einstein's cosmological constant, is the constant coefficient of a term that Albert Einstein temporarily added to his field equations of general relativity. He later removed it.