(physics) An approximation to a wave function made by taking a linear combination of simpler functions

(physics) A function of the position and spin of an electron; related to the probability of finding the electron in a specified position

(physics) A function which is a solution of Schrödinger's wave equation; the psi function

(physics) The low-energy, ground state of a metal in which densities of the electron spins and charges follow a regular spatial distribution

(electronics) An electron tube in which high-energy microwaves are produced by transferring energy from electrons

The use of mathematics and a large number of loudspeakers to accurately reproduce a given field of sound.

(astronomy) Electromagnetic waves with a wavelength less than one millimeter (the band begins at about 0.3 THz). A term often used by radio astronomers.

plural of hybrid wave function

plural of electron wave function

(US politics, slang) To mention martyrs and wars (especially the American Civil War) in an effort to draw empathy.