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Energy - Wikipedia, the free encyclopedia
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Energy
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This article is about the scalar physical quantity. For other uses, see
Energy (disambiguation).
"Energetic" redirects here. For other uses, see
Energetic (disambiguation).
Lightning is the electric breakdown of air by strong electric fields, which produce a force on charges. When these charges move through a distance, a flow of energy occurs. The electric
potential energy in the atmosphere then is transformed into thermal energy, light, and sound, which are other forms of energy.
In ) is an indirectly observed quantity. It is often understood as the ability a Since work is defined as a
force acting through a distance (a length of space), energy is always equivalent to the ability to exert pulls or pushes against the basic forces of nature, along a path of a certain length.
The total energy contained in an object is identified with its
mass, and energy (like mass), cannot be created or destroyed. When
matter (ordinary material particles) is changed into energy (such as energy of motion, or into radiation), the mass of the system does not change through the transformation process. However, there may be mechanistic limits as ...
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