Energy (disambiguation)

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This disambiguation page lists articles associated with the same or a similar title.

Energy is a word with several connotations. The word goes back to the natural philosophy of Aristotle, ενέργεια (energeia), where it means roughly "efficacy". In the early nineteenth century the word was incorporated into science by Thomas Young. In science, the concept energy has a clear meaning, which, however, is not easy to explain because of the many forms in which energy manifests itself. The word energy is also very commonly used outside science, where it means physical or mental power to achieve something. "Negative energy" is a mental power that is in the way of achieving things. A person with a cheerful, positive or motivational attitude is said to have "good energy".

Specifically, Energy may refer to: