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[[File:lighterstill.jpg]][[File:Bouyancy_gravity.jpg‎|right|frame]]

[[File:lighterstill.jpg]][[File:Bouyancy_gravity.jpg‎|right|frame]]

'''Buoyancy''' (pronounced /ˈbɔɪ.ənsi/) is the upward force, caused by [[fluid]] pressure, that keeps [[things]] afloat. The net upward buoyancy [[force]] is equal to the magnitude of the weight of fluid displaced by the [[body]]. This force enables the object to float or at least seem lighter.[http://en.wikipedia.org/wiki/Buoyancy]

'''Buoyancy''' (pronounced /ˈbɔɪ.ənsi/) is the upward force, caused by [[fluid]] pressure, that keeps [[things]] afloat. The net upward buoyancy [[force]] is equal to the magnitude of the weight of fluid displaced by the [[body]]. This force enables the object to float or at least seem lighter.[https://en.wikipedia.org/wiki/Buoyancy]

==Definitions==

==Definitions==

*Date: [http://en.wikipedia.org/wiki/18th_Century 1713]

*Date: [https://en.wikipedia.org/wiki/18th_Century 1713]

*1 a : the tendency of a [[body]] to float or to rise when submerged in a fluid  

*1 a : the tendency of a [[body]] to float or to rise when submerged in a fluid