(physics) The energy of a heterogeneous (polychromatic) photon beam calculated as if it were monochromatic

(physics) The potential energy of a system of separated electric charges.

(physics) The energy needed to change something from the ground state to any particular excited state

(physics) The potential energy of an electric or magnetic field.

(physics) The potential energy of an electric charge in an electric field, or of an electric current in a magnetic field. / Electrical energy.

(physics) The potential energy stored in a system when it is distorted or deformed; the classic example is that of a coiled spring

(physics) The highest energy of a particle that is part of a many-particle system of identical fermions in its ground state.

(materials science) The energy needed to fracture a material under standard conditions.

interfacial energy

(physics) The energy required to separate the ions of an ionic solid (especially a crystal) to infinity