Changes

[[Image:lighterstill.jpg]][[Image:Energy.jpg|right|frame]]

[[Image:lighterstill.jpg]][[Image:Energysmall.jpg|right|frame]]

'''Energy''' (from the Greek ἐνέργεια}} - ''[[energeia]]'', "activity, operation", from ἐνεργός - ''energos'', "active, working" [http://www.etymonline.com/index.php?term=energy] is a scalar [[physical]] [[quantity]] that is an attribute of objects and systems that is conserved in nature. In physics textbooks, energy is often defined as the ability to do work or to cause change.  

'''Energy''' (from the Greek ἐνέργεια}} - ''[[energeia]]'', "activity, operation", from ἐνεργός - ''energos'', "active, working" [http://www.etymonline.com/index.php?term=energy] is a scalar [[physical]] [[quantity]] that is an attribute of objects and systems that is conserved in nature. In physics textbooks, energy is often defined as the ability to do work or to cause change.