### joule

**(J)**
(SI unit of energy)

The **joule** (**J**) is an SI (derived) unit of energy equivalent to
the work done by the force of a **newton** (a unit
of force) pushing over a meter distance.
A *joule* is one kilogram meter-squared per second-squared
(kg·m²/s²),
a *newton* being the force necessary to accelerate a kilogram
by one meter per second-squared.
A *joule* is also a watt-second.
10^{7} ergs make a joule.

(*physics,unit,energy,SI*)
**Further reading:**

http://en.wikipedia.org/wiki/joule

**Referenced by pages:**

cosmic rays (CR)

energy density

erg

electron volt (eV)

foe

GZK limit

ideal gas law

insolation

luminosity (L)

Planck constant (h)

Planck units

radiance

radiant flux

standard gravitational parameter (μ)

tesla (T)

Uhuru

watt (W)

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