Template:Physconst/doc

This template allows the values of physical constants to be quickly entered in articles. As of now, it returns CODATA 2010 recommended values, but using the template allows all the articles using it to be updated at once when more recent values become available. In particular, if the proposed new SI definitions are approved, the numerical values of the constants used in the new definitions will become exact whereas those of the constants used in the old definition will acquire an uncertainty.

Arguments

 * : If set to , the value is preceded by the symbol of the constant, followed by ≈ or &#61; depending on whether or not   is set.
 * : If omitted, the value is shown along with its standard uncertainty. If set to an integer n, the value is rounded to the first n digits after the decimal point. If set to, the value is rounded so that the standard uncertainty is no more than 1.5 units in the last place.
 * : If set to, the unit of measurement is not shown.
 * : If set to, no reference is given. If set to  , only the reference is given.
 * : Text (e.g. punctuation) to be shown after the constant before the reference.

Examples










Available constants

 * : fine-structure constant
 * : speed of light
 * : elementary charge
 * : vacuum permittivity
 * : electronvolt
 * : Faraday constant
 * : gravitational constant
 * : conductance quantum
 * : Planck constant
 * : reduced Planck constant
 * : inverse fine-structure constant
 * : Boltzmann constant
 * : electron mass
 * : proton mass
 * : proton-to-electron mass ratio
 * : atomic mass constant
 * : vacuum permeability
 * : Avogadro constant
 * : magnetic flux quantum
 * : gas constant
 * : Rydberg constant
 * : Stefan–Boltzmann constant