Energy (disambiguation)

Energy is a concept related to matter, work, and force in physics and other sciences.

Energy may refer to:

• Energy (chemistry), the potential for substances to undergo transformations or transform other substances
• Energy (biology), the potential of organisms to undergo or cause a change in their form or function
• Energy (earth science), the potential of various constituents of the planet Earth to influence one another
• Energy (cosmology), energy transformations in the universe beyond the planet Earth
• Energy (signal processing) the energy Es of a continuous-time signal x(t)
• Energy (social studies), energy resources - substances like fuels, petroleum products and electricity

In Psychology and spirituality:

• Energy (spirituality), invoked by spiritualists for alternative modes of healing the human body
• Energy (psychological), a psychological term used to describe the states of human mind
• Vitalism, often referred to as "energy"

In music:

• Energy (album), the only full CD released by Operation Ivy
• Energy (band), a Taiwanese boy group
• Energy Rekords, a record label
• "Energy", a song by The Pillows from Pantomime
• "Energy", a song in the LazyTown soundtrack

In radio stations:

• KNGY, Energy 92.7, San Francisco, California
• KNRJ, Energy 92.7 & 101.1, Phoenix, Arizona
• KBZD, Energy 99.7, Amarillo, Texas
• NRJ Radio, a radio network in Paris, France
• WNRJ, Energy 106.1, Poquoson, Virginia

Types of energy

• Potential energy, the form of energy that is due to position of an object
• Kinetic energy, the form of energy as a consequence of the motion of an object or its constituents
• Mechanical energy, the potential energy and kinetic energy present in the components of a mechanical system.
• Binding energy, a concept explaining how the constituents of atoms or molecules are bound together
• Bond energy, a measure of the strength of a chemical bond
• Blue energy, energy retrieved from the difference in the salt concentration between seawater and river water
• Nuclear energy, energy that is the consequence of decomposition or combination of atomic nuclei
• Gibbs free energy, a related concept in chemical thermodynamics that incorporates entropy considerations too
• Helmholtz free energy, a thermodynamic potential that measures the "useful" work obtainable from a closed thermodynamic system at a constant temperature, useful for studying explosive chemical reactions
• Elastic energy, which causes or is released by the elastic distortion of a solid or a fluid
• Interaction energy, the contribution to the total energy that is a result of interaction between the objects being considered
• Internal energy, potential for a closed thermodynamic system held at constant entropy
• Negative energy
• Dark energy, used to explain some cosmological phenomena
• Planck energy, 1.22 × 10¹⁹ GeV (billion electron volts)
• Food energy, energy in food that is available through digestion

See also

• Energetics
• List of energy topics
• Entropy
• Fuel
• International Energy Agency
• Stress-energy tensor