Energy
Energy is a fundamental quantity that every physical system possesses. Energy of physical system in a certain given state is defined as the amount of work W needed to change the state of the system from some initial state (called reference state or reference level) to the given state.
See also
Energy in natural sciences
- energy conversion
- enthalpy
- exergy
- power (physics)
- specific orbital energy
- thermodynamics
- thermodynamic entropy
Energy use by humans
Major topics
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- List of energy topics
- Energy crisis
- Energy development
- Energy technology
- Energy policy
- Renewable energy
- Energy balance
- Energy demand management and DSM
- Energy storage
- Energy transmission
- EU Energy Label
Other articles
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~ Table of Content ~
| ► | Introduction |
| ► | Units |
| ► | Transfer of energy |
| ► | Types of energy |
| ► | History |
| ► | Energy use |
| ► | See also |
| ► | Further reading |
| ► | External links |
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