Energy

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  • Energy
definition
  • The capacity for doing work as measured by the capability of doing work (potential energy) or the conversion of this capability to motion (kinetic energy)
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  • E
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Abstract from DBPedia
    In physics, energy is the quantitative property that must be to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton. Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature. Mass and energy are closely related. Due to mass–energy equivalence, any object that has mass when stationary (called rest mass) also has an equivalent amount of energy whose form is called rest energy, and any additional energy (of any form) acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy. For example, after heating an object, its increase in energy could be measured as a small increase in mass, with a sensitive enough scale. Living organisms require energy to stay alive, such as the energy humans get from food. Human civilization requires energy to function, which it gets from energy resources such as fossil fuels, nuclear fuel, or renewable energy. The processes of Earth's climate and ecosystem are driven by the radiant energy Earth receives from the sun and the geothermal energy contained within the earth.

    エネルギー資源(エネルギーしげん、英語: Energy resource)とは、産業・運輸・消費生活などに必要な動力の源。 18世紀までは主要なエネルギー源は水力や風力、薪、炭、鯨油などであったが、19世紀の産業革命の頃からそれらに代わって、石炭、石油が主に用いられるようになり、20世紀には核燃料が登場した。 最近では、一次資源がとに分けて考えられるようになっており、再生可能エネルギーの開発とそれへの移行が進行中である。 消費されるエネルギー資源の構成が劇的に変化すること、あるいはその転換期を指してエネルギー革命と呼ぶことがある。転換期としてのエネルギー革命とは、第二次世界大戦後の石炭から石油への急激なエネルギー源の転換などを指すことが多い。

    (Source: http://dbpedia.org/resource/Energy)

    In physics, energy is the quantitative property that must be to an object in order to perform work on, or to heat, the object. Energy is a conserved quantity; the law of conservation of energy states that energy can be converted in form, but not created or destroyed. The SI unit of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of 1 metre against a force of 1 newton. Common forms of energy include the kinetic energy of a moving object, the potential energy stored by an object's position in a force field (gravitational, electric or magnetic), the elastic energy stored by stretching solid objects, the chemical energy released when a fuel burns, the radiant energy carried by light, and the thermal energy due to an object's temperature. Mass and energy are closely related. Due to mass–energy equivalence, any object that has mass when stationary (called rest mass) also has an equivalent amount of energy whose form is called rest energy, and any additional energy (of any form) acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy. For example, after heating an object, its increase in energy could be measured as a small increase in mass, with a sensitive enough scale. Living organisms require energy to stay alive, such as the energy humans get from food. Human civilization requires energy to function, which it gets from energy resources such as fossil fuels, nuclear fuel, or renewable energy. The processes of Earth's climate and ecosystem are driven by the radiant energy Earth receives from the sun and the geothermal energy contained within the earth.

    エネルギー(独: Energie、英: energy)とは、 1. * (物理学)仕事をすることのできる能力のことを指す。物体や系が持っている仕事をする能力の総称。 2. * 1. の意味から転じて、物事をなしとげる気力・活力のこと。活動の源として体内に保持する力。 3. * エネルギー資源のこと。

    (Source: http://dbpedia.org/resource/Energy)

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