Difference between revisions of "Energy"
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In [[physics]], '''energy''' is a property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed. | In [[physics]], '''energy''' is a property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed. | ||
| + | |||
| + | (TO DO: expand, organize, cross-reference, illustrate.) | ||
== Many forms of energy == | == Many forms of energy == | ||
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== See also == | == See also == | ||
| + | * [[Computation]] | ||
| + | * [[Entropy]] | ||
| + | * [[Information theory]] | ||
* [[Machine]] | * [[Machine]] | ||
* [[Physics]] | * [[Physics]] | ||
Revision as of 11:54, 9 September 2015
In physics, energy is a property of objects which can be transferred to other objects or converted into different forms, but cannot be created or destroyed.
(TO DO: expand, organize, cross-reference, illustrate.)
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
- Gravitational
- Electric
- Magnetic
- The elastic energy stored by stretching solid objects
- The chemical energy released when a fuel burns
- The thermal energy due to an object's temperature
See also
External links
- Energy @ Wikipedia
