(physics) Planck's constant divided by 2π, symbolized ℏ; the quantum of angular momentum and spin.

Alternative form of Boltzmann's constant

(physics) The physical constant relating energy at the particle level with temperature observed at the bulk level. It is the gas constant R divided by the Avogadro's number N_A:- k=R/(N_rm A),

(physics) An empirical physical constant involved in the calculation of the gravitational attraction between objects with mass

Alternative form of Einstein's constant

plural of constant function

Alternative form of Planck's constant

Describing a universal joint that allows constant power to be transmitted through a variable angle

(physics) A physical quantity that is generally believed to be both universal in nature and constant in time.

(physics) A characteristic of a spring which is defined as the ratio of the force affecting the spring to the displacement caused by it.