A constant representing the charge on one mole of electrons; 96,
485 coulombs.

FEA

Finite element analysis.

Fermi energy

The energy level in a solid at which the probability of finding an
electron is 1/2. For a metal, the energy corresponding to the
highest filled electron state in the valence band at 0 K.

Ferroelectric material

A dielectric material such as Rochelle salt and barium titanate
with a domain structure containing dipoles (asymmetric
distributions of electrical charge) which spontaneously
align. Their domain structure makes them analogous to
ferromagnetic materials. They exhibit hysteresis and usually the
piezoelectric effect.

Ferromagnetism

Permanent and large magnetizations found in some metals (e.g. Fe,
Ni and Co), resulting from the parallel alignment of neighboring
magnetic moments.

Relates to transmission of information as modulated light in tiny
transparent fibers instead of copper wires.

Fick's first law

The diffusion flux is proportional to the concentration gradient.
This relationship is employed for steady-state diffusion
situations.

Fick's second law

The time rate of change of concentration is proportional to the
second derivative of concentration. This relationship is employed
in non-steady-state diffusion situations.