- is an illusive
driving force of change
is a term coined by Thomas Young to broaden the
concept of heat and work.
has many forms
mechanical energy defined
in Newtonian physics as potential and
unit: joule (J), 1 J = 1 N m
- heat - energy in transition within a medium
unit: calorie (cal), 1 cal = 4.184 J.
- electric energy
- energy acquired by electric charge when accelerated by a voltage
units: J eV MeV GeV TeV amu etc
- radiation (light and radioactivity)
- chemical energy
- energy carried by sound
- energy mass (nuclear energy)
converts from one form to another at fixed rate.
For example: 1 cal = 4.184 J (a new definition of cal)
There is much to learn in energy conversion.
can neither be created nor destroyed - the
law of conservation of energy .
has many sources and forms
is managed individually and collectively in a society