Physical constants

physical quantity that is generally believed to be both universal in nature and constant in time

physical constant; the molar equivalent to the Boltzmann constant

the electric charge carried by a single proton or a single positron

smallest describable unit of time

physical constant: electric charge of one mole of electrons

physical constant; the most probable distance between an electron and the nucleus in a nonrelativistic model of the hydrogen atom with infinitely heavy nucleus

physical constant

ratio between the radiative power of a black body to the fourth power of its temperature

unit of magnetic moment (approx. 9.2 J/T); the magnetic dipole moment of an electron orbiting an atom with angular momentum ℏ in the Bohr model

set of pseudo units to describe small values of miscellaneous dimensionless quantities

сonstant in crystallography

physical constant providing length scale to interatomic interactions

physical constant - number density of molecules in an ideal gas at standard temperature and pressure

The hartree (symbol: Eh), also known as the Hartree energy, is the unit of energy in the atomic units system, named after the British physicist Douglas Hartree. Its CODATA recommended value is = The name "hartree" was suggested for this unit of energy.

physical constant relating the magnitudes of the electric and magnetic fields of electromagnetic radiation travelling through free space

Relation between observed magnetic moment of a particle and the related unit of magnetic moment

quantized unit of magnetic flux threading a loop in a bulk superconductor

constant used in orbital mechanics of the solar system

property that relates a material’s magnetic susceptibility to its temperature through Curie’s law

mass of a stationary electron

organization

empirically derived parameters A and B that characterize the differential rotational properties of our galaxy at the position of our Sun

type of constant

electroweak coupling constant describing the position of the electromagnetic U(1) within the electroweak gauge group; the arccosine of the W-boson/Z-boson mass ratio

spin of an electron

dimension that defines the scale of a physical system

physical constant in chemistry

measure of the size of atomic nuclei