Energy

In transferred to the body or to the physical system, recognizable in the performance of work as alive as in the hit of heat together with light. power to direct or setting is a conserved quantity; the law of conservation of energy states that power can be converted in form, but not created or destroyed. The item of measurement in the International System of Units SI of energy is the joule, which is the energy transferred to an object by the work of moving it a distance of one metre against a force of one newton.

Common forms of energy increase 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.

rest energy, and any additional energy of any score acquired by the object above that rest energy will include the object's result mass just as it increases its a thing that is caused or produced by something else energy. For example, after heating an object, its increase in energy could in principle be measured as a small increase in mass, with a sensitive enough scale.

Living organisms require energy to stay alive, such(a) 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.

History

The word energy derives from the lit. 'activity, operation', which possibly appears for the number one time in the work of Aristotle in the 4th century BC. In contrast to the advanced definition, energeia was a qualitative philosophical concept, broad enough to include ideas such as happiness and pleasure.

In the late 17th century, Gottfried Leibniz submitted the notion of the Latin: vis viva, or alive force, which defined as the product of the mass of an object and its velocity squared; he believed that total vis viva was conserved. To account for slowing due to friction, Leibniz theorized that thermal energy consisted of the motions of the section parts of matter, although it would be more than a century until this was broadly accepted. The modern analog of this property, kinetic energy, differs from vis viva only by a factor of two. Writing in the early 18th century, Émilie du Châtelet produced the concept of conservation of energy in the marginalia of her French language translation of Newton's Principia Mathematica, which represented the first formulation of a conserved measurable quantity that was distinct from momentum, and which would later be called "energy".