Energy
From Wiki @ Karl Jones dot com
In physics, energy is a property of objects which can be transferred to other objects or converted into different forms.
Many forms of energy
Energy has many different forms, making a comprehensive definition difficult.
One common definition: energy is the ability of a system to perform work.
In SI units, energy is measured in joules, the energy transferred to an object by the mechanical work of moving it 1 metre against a force of 1 newton.
Conversion
All of the many forms of energy are convertible to other kinds of energy, and obey the conservation of energy.
Common forms of energy
- The kinetic energy of a moving object
- The radiant energy carried by light
- The potential energy stored by an object's position in a force field
- The elastic energy stored by stretching solid objects
- The chemical energy released when a fuel burns - see Combustion
- The thermal energy due to an object's temperature
See also
- Combustion
- Computation
- Entropy
- Forms of energy
- Fuel
- Hydrogen fuel
- Index of energy articles
- Index of wave articles
- Information theory
- Machine
- Orders of magnitude (energy)
- Physical body
- Physics
- Transfer energy
- Work
External links
- Energy @ Wikipedia