News tagged with kinetic energy
Time crystals could behave almost like perpetual motion machines
(PhysOrg.com) -- As every young science student knows, moving objects have kinetic energy. But just how much energy does something need to move? In a new study, a pair of physicists has shown that it’s ...
Feb 20, 2012 |
4.7 / 5 (34) |
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Vehicle shock absorber recovers energy from bumps in the road
(PhysOrg.com) -- In the past decade, regenerative braking systems have become increasingly popular, recovering energy that would otherwise be lost through braking. However, another energy recovery mechanism ...
Mar 17, 2010 |
4.5 / 5 (30) |
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Graphene battery demonstrated to power an LED
(PhysOrg.com) -- Scientists in Hong Kong have reported, in ArXiv, their experiments to make a graphene battery that they say generates an electrical current by drawing on the ambient thermal energy in the sol ...
Nanotechnology / Nanomaterials
Mar 16, 2012 |
4.1 / 5 (25) |
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Increasing rainfall may affect winds: study
(PhysOrg.com) -- Falling raindrops produce friction as they drop through the atmosphere to the ground, and this dissipates the kinetic energy, converting it into diffuse heat. Now researchers in the US have ...
Space & Earth / Earth Sciences
Feb 24, 2012 |
4.8 / 5 (8) |
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Wind farms lift the temperature in their region
Wind turbines can modify the local climate by warming the atmosphere, according to a study that revealed an increase in temperature of 0.72 degrees over a region of Texas where four large wind farms have been ...
Technology / Energy & Green Tech
Apr 30, 2012 |
3.3 / 5 (12) |
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Physicists' findings about helium could lead to more accurate temperature measurements
In the May 7 edition of Physical Review Letters an international team led by University of Delaware researchers reports new findings about helium that may lead to more accurate standards for how temperature and pr ...
May 17, 2010 |
4.7 / 5 (9) |
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Evidence of macroscopic quantum tunneling detected in nanowires
A team of researchers at the University of Illinois has demonstrated that, counter to classical Newtonian mechanics, an entire collection of superconducting electrons in an ultrathin superconducting wire is ...
May 27, 2009 |
4.3 / 5 (15) |
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Scientists find an equation for materials innovation
(PhysOrg.com) -- Princeton engineers have made a breakthrough in an 80-year-old quandary in quantum physics, paving the way for the development of new materials that could make electronic devices smaller and ...
Feb 25, 2010 |
4.9 / 5 (24) |
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Kites flying in high-altitude winds could provide clean electricity
(PhysOrg.com) -- At any moment, the winds in high-altitude jet streams hold roughly 100 times more energy than all the electricity being consumed on Earth, according to a study by Stanford environmental and ...
Technology / Energy & Green Tech
Jun 24, 2009 |
4.6 / 5 (44) |
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New detector design improves gamma-ray measurements
(Phys.org) -- In the pursuit of precision measurements, nothing is simple, even when the apparatus employed appears to be utterly uncomplicated. An instructive case in point is the new ionization chamber used ...
Apr 06, 2012 |
5 / 5 (4) |
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Elusive 'hot' electrons captured in ultra-thin solar cells
Boston College researchers have observed the "hot electron" effect in a solar cell for the first time and successfully harvested the elusive charges using ultra-thin solar cells, opening a potential avenue to improved solar ...
Dec 11, 2009 |
4.5 / 5 (13) |
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Faux trees convert CO2 to O2
(PhysOrg.com) -- Air is one of the few things that you really cannot do without. At least if you want to continue to live. As the population of the earth gets bigger and bigger and increasing amounts of the ...
Mar 10, 2011 |
4.1 / 5 (18) |
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Speed-bump device converts traffic energy to electricity
(PhysOrg.com) -- The two little words "speed bump" usually evoke unpleasant memories of spilled coffee and back-seat arguments questioning if and where you learned how to drive. In some green energy circles, ...
Technology / Energy & Green Tech
Nov 09, 2011 |
4.3 / 5 (4) |
8
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Fingerprinting uranium: X-rays identify mobile, stationary forms of atomic pollutant
(PhysOrg.com) -- Determining if uranium will zip through the soil or not is easier now, thanks to scientists at Pacific Northwest National Laboratory and the University of North Texas. Dr. Eugene Ilton and ...
Chemistry / Analytical Chemistry
Dec 19, 2011 |
5 / 5 (2) |
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Movement of black holes powers the universe's brightest lights
Whether on their own or orbiting as a pair, black holes don't typically sit still.
Jul 20, 2011 |
4.2 / 5 (6) |
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