In physics, **natural units** are physical units of measurement based only on universal physical constants. For example the elementary charge *e* is a natural unit of electric charge, and the speed of light *c* is a natural unit of speed. A purely natural system of units is defined in such a way that some set of selected universal physical constants are each normalized to unity; that is, their numerical values in terms of these units are exactly 1. While this has the advantage of simplicity, there is a potential disadvantage in terms of loss of clarity and understanding, as these constants are then omitted from mathematical expressions of physical laws.

Read more about Natural Units: Introduction, Notation and Use, Choosing Constants To Normalize, Electromagnetism Units

### Other articles related to "natural units, unit, natural, units":

**Natural Units**

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**Natural Units**- Summary Table

... Quantity / Symbol Planck (with Gaussian) Stoney Hartree Rydberg "

**Natural**" (with L-H) "

**Natural**" (with Gaussian) Speed of light in vacuum Planck's constant (reduced) Elementary charge ...

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**Natural units**Conventional electrical

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**natural units**" or the quantum chromodynamical system of

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**Natural Units**

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**Natural units**are physical

**units**of measurement defined in terms of universal physical constants in such a manner that some chosen physical constants take on the numerical value of one when expressed in terms of a ...

**Natural units**are

**natural**because the origin of their definition comes only from properties of nature and not from any human construct ... Various systems of

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