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User:Attractor321/Binding energy
A '''binding energy''' is the net negative [[potential energy]] (''i.e.'', the net energy debt) pulling a bound system together.<ref>Young, Hugh D.; Freedman, ‎Roger A. [https://www.google.co.uk/search?newwindow=1&tbm=bks&q=%22has+a+net+negative+potential+energy%22 University Physics]. Addison-Wesley, 2000, p. 736. "'''A crystal''' of table salt is made of ions of sodium (Na<sup>+</sup>) and chlori(contracted; show full)

From ''E''&nbsp;=&nbsp;''mc''<sup>2</sup>, it follows that '''''Binding energy'' = ''Mass change'' × ''c''<sup>2</sup>'''. Since the mass change is negative (a mass defect), the binding energy is negative too.

==See also==
*[[
User:Attractor321/Minimum total potential energy principle|Minimum total potential energy principle]]
*[[Potential energy]]

==References==
{{Reflist}}

==External links==
*[http://hyperphysics.phy-astr.gsu.edu/hbase/nucene/nucbin.html Nuclear Binding Energy]

{{DEFAULTSORT:Binding Energy}}
[[Category:Basic physics ideas]]
[[Category:Cosmology]]
[[Category:Energy]]