Energy transformation
hideIn physics, the term [energy] describes the amount of work which may potentially be done by forces within a system. Changes in energy in systems can only be accomplished by adding or subtracting energy from them, as energy is a quantity which is conserved. (Loosely, changes in the energy of systems also coincide with changes in the system's mass).
Energy in a system may be transformed so that it resides in a different state. Energy in many states may be used to do many varieties of physical work. Energy may be used in natural processes or machines, or else to provide some service to society (such as heat, light, or motion). For example, an internal combustion engine converts the potential chemical energy in gasoline and oxygen into heat, which is then transformed into the propulsive energy (kinetic energy that moves a vehicle. A solar cell converts solar radiation into electrical energy that can then be used to light a bulb or power a computer.
The generic name for a device which converts energy from one form to another is transducer.
For more information about Energy transformation, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
News tagged with energy transfer
Research shows power of FRET-based approach for distinguishing among distinct states of proteins
Nov 30, 2009 |
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In the December 2009 issue of the Journal of General Physiology, Moss et al. report a comprehensive investigation employing Förster resonance energy transfer (FRET) to study the {gamma}-amino acid (GABA) transporter GAT1, ...
Cross-country runabouts -- immune cells on the move
Nov 17, 2009 |
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(PhysOrg.com) -- In order to effectively fight pathogens, even at remote areas of the human body, immune cells have to move quickly and in a flexible manner.
Invention will help speed development of drug treatments for heart failure
Nov 23, 2009 |
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Research conducted by University of Minnesota scientists, in collaboration with Celladon Corporation, has led to the invention of technology to more rapidly identify compounds for the treatment of heart failure.
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Scientists discover mechanism behind superinsulation
2 hours ago |
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(PhysOrg.com) -- Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered the microscopic mechanism behind the phenomenon of superinsulation, the ability of certain materials ...
New funding will stimulate alternative energy research
Nov 16, 2009 |
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Initiatives to provide geothermal heating or power at the Pueblo of Jemez and the New Mexico Institute of Mining and Technology campus are receiving Los Alamos National Laboratory assistance, thanks to recent American Reinvestment ...
At Stanford, nanotubes + ink + paper = equal instant battery (w/ Video)
Nanotechnology / Nanomaterials
Dec 07, 2009 |
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(PhysOrg.com) -- Stanford scientists are harnessing nanotechnology to quickly produce ultra-lightweight, bendable batteries and supercapacitors in the form of everyday paper.
3-D microchips for more powerful and environmentally friendly computers
Dec 11, 2009 |
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Not so long ago our computers had a single core which had to be boosted for performance - making each machine into a great central heating system. Beyond 85° C, however, electronic components become unstable. ...
Researchers Identify Key Molecules in Photosynthesis
Dec 02, 2009 |
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(PhysOrg.com) -- Chemistry professor Harry Frank led an international group of researchers that identified the molecules in algae which direct the organisms to convert sunlight into oxygen. The findings may ...
Nanotech in Space: Experiment To Weather the Trials of Orbit
Nanotechnology / Nanomaterials
Nov 24, 2009 |
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Novel nanomaterials developed at Rensselaer were sent into orbit on Nov. 16 aboard Space Shuttle Atlantis.
It's not just dirt!
Nov 25, 2009 |
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Soil is the linchpin of the environment, where atmosphere, biosphere, and hydrosphere meet. Despite that, many students see soil as "just dirt" - a place to grow plants, but nothing more. Soil science educators are challenged ...
Toshiba develops essential technology for spintronics-based MOS field-effect transistor
Dec 09, 2009 |
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(PhysOrg.com) -- Toshiba Corporation today announced that it has developed MOSFET cell based on spin transport electronics, or spintronics, an advanced semiconductor technology that makes use of the spin and ...
Turning heat to electricity... efficiently
Nov 18, 2009 |
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(PhysOrg.com) -- In everything from computer processor chips to car engines to electric powerplants, the need to get rid of excess heat creates a major source of inefficiency. But new research points the way ...
Absorbing Hydrogen Fluoride Gas to Enhance Crystal Growth
Dec 10, 2009 |
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(PhysOrg.com) -- Two scientists at the U.S. Department of Energy's Brookhaven National Laboratory have developed a method to control the buildup of hydrogen fluoride gas during the growth of precision crystals ...
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