Energy (physics) | Wikipedia audio article
Channel: wikipedia tts
Date: 2018-12-30

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Energy


00:01:33 1 Forms
00:02:30 2 History
00:04:51 3 Units of measure
00:06:21 4 Scientific use
00:06:30 4.1 Classical mechanics
00:08:56 4.2 Chemistry
00:10:11 4.3 Biology
00:15:39 4.4 Earth sciences
00:17:31 4.5 Cosmology
00:18:40 4.6 Quantum mechanics
00:19:59 4.7 Relativity
00:22:32 5 Transformation
00:22:35 5.1 Conservation of energy and mass in transformation
00:27:20 5.2 Reversible and non-reversible transformations
00:29:00 6 Conservation of energy
00:29:30 7 Energy transfer
00:31:12 7.1 Closed systems
00:35:48 7.2 Open systems
00:35:57 8 Thermodynamics
00:37:25 8.1 Internal energy
00:37:53 8.2 First law of thermodynamics
00:38:02 8.3 Equipartition of energy
00:38:37 9 See also
00:40:56 10 Notes
00:42:24 11 References



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SUMMARY
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In physics, energy is the quantitative property that must be transferred 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 available 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.