Difference between revisions of "Natural units"
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'''Natural units''' are units of [[measurement]] that arise when a physical [[constant]], such as [[Planck's constant]] or the [[speed of light]] in a vacuum, is set to a [[dimensionless]] value such as one.<ref>[http://superstringtheory.com/unitsa.html Natural units]</ref> | '''Natural units''' are units of [[measurement]] that arise when a physical [[constant]], such as [[Planck's constant]] or the [[speed of light]] in a vacuum, is set to a [[dimensionless]] value such as one.<ref>[http://superstringtheory.com/unitsa.html Natural units]</ref> | ||
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| + | [[Radian]]s used in [[geometry]] are one example of a natural constant, since they are definted so that [[pi]] radians make a half-turn (more widely known as 180 degrees). | ||
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==References== | ==References== | ||
<references/> | <references/> | ||
[[Category:Physics]] | [[Category:Physics]] | ||
Revision as of 17:06, March 27, 2012
Natural units are units of measurement that arise when a physical constant, such as Planck's constant or the speed of light in a vacuum, is set to a dimensionless value such as one.[1]
Radians used in geometry are one example of a natural constant, since they are definted so that pi radians make a half-turn (more widely known as 180 degrees).
