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Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.
Renewable energy (or green energy) is energy from renewable natural resources that are replenished on a human timescale. The most widely used renewable energy types are solar energy, wind power, and hydropower. Bioenergy and geothermal power are also significant in some countries.
Energy in the United States is obtained from a diverse portfolio of sources, although the majority came from fossil fuels in 2021, as 36% of the nation's energy originated from petroleum, 32% from natural gas, and 11% from coal.
In physics, energy is a property intrinsic to anything that is able to interact in the universe. The energy of an object is its capability of producing a force that can do work, as well as its capability of transferring heat.
Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or various other forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another. Learn more about energy in this article.
Energy can be used to perform work; work can be made to increase the energy of a system. This is one way of stating an important principle, the work-energy theorem. The two quantities are not the same, any more than mass and energy are the same thing, but one can be converted into the other.
GEM Wiki is a shared, community-built resource featuring thousands of interlinked pages covering all aspects of the global energy system. GEM Wiki is built on the MediaWiki platform, a tool developed by the Wikipedia Foundation that allows anyone to edit existing articles and create new ones.
Welcome to GEM Wiki, the shared resource on all things energy: fossil fuels, renewable energy sources, environmental impacts, and the global movement to transition to a clean energy system.
Energy是一个台灣 男子團體，於2002年7月12日成立，2009年全員單飛，2024宣布重新復出並簽約相信音樂，團員擅長街舞 [1] 。 團內職務分別為：團長和主領舞暨饒舌 牛奶 、主唱 阿弟 、副主唱 書偉 、創作和饒舌 Toro 、顏值擔當和饒舌 坤達 。
History of energy. Thomas Young - the first to use the term "energy" to refer to kinetic energy in its modern sense, in 1802. In the history of physics, the history of energy examines the gradual development of energy as a central scientific concept.