Template:Physconst

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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.

Usage[edit]

Arguments[edit]

symbol
If set to yes, the value is preceded by the symbol of the constant, followed by or = depending on whether or not round is set.
round
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 auto, the value is rounded so that the standard uncertainty is no more than 1.5 units in the last place.
unit
If set to no, the unit of measurement is not shown.
ref
If set to no, no reference is given. If set to only, only the reference is given.
after
Text (e.g. punctuation) to be shown after the constant before the reference.

Examples[edit]

{{physconst|c|unit=no|after= [[metre per second|metres per second]].}}
299792458 metres per second.[1]
{{physconst|mu0|symbol=yes}}
μ0 = 12.566370614...×107
 N/A2
[2]
{{physconst|G|symbol=yes}}
G = 6.67384(80)×1011
 m3kg−1s−2
[3]
{{physconst|h|round=auto|ref=no}}
6.62607×1034
 J s
{{physconst|hbar|round=2|symbol=yes}}
ħ ≈ 1.05×1034
 J s
[4]

Available constants[edit]

See also[edit]

  1. 1.0 1.1 "CODATA Value: speed of light in vacuum". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  2. 2.0 2.1 "CODATA Value: magnetic constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  3. 3.0 3.1 "CODATA Value: Newtonian constant of gravitation". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  4. 4.0 4.1 "CODATA Value: Planck constant over 2 pi". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  5. "CODATA Value: fine-structure constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  6. "CODATA Value: elementary charge". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  7. "CODATA Value: electric constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  8. "CODATA Value: electron volt". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  9. "CODATA Value: Faraday constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  10. "CODATA Value: conductance quantum". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  11. "CODATA Value: Planck constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  12. "CODATA Value: inverse fine-structure constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  13. "CODATA Value: Boltzmann constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  14. "CODATA Value: electron mass". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  15. "CODATA Value: proton mass". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  16. "CODATA Value: proton-electron mass ratio". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  17. "CODATA Value: atomic mass constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  18. "CODATA Value: Avogadro constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  19. "CODATA Value: magnetic flux quantum". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  20. "CODATA Value: molar gas constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  21. "CODATA Value: Rydberg constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)
  22. "CODATA Value: Stefan-Boltzmann constant". The NIST Reference on Constants, Units, and Uncertainty. US National Institute of Standards and Technology. June 2011. Retrieved 2011-06-23. External link in |work= (help)