News tagged with kinetic energy
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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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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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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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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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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Oh-My-God Particles
Cosmic rays are really sub-atomic particles, being mainly protons (hydrogen nuclei) and occasionally helium or heavier atomic nuclei and very occasionally electrons. Cosmic ray particles are very energetic ...
Jun 13, 2011 |
4.4 / 5 (15) |
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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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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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Mini generators make energy from random ambient vibrations
Tiny generators developed at the University of Michigan could produce enough electricity from random, ambient vibrations to power a wristwatch, pacemaker or wireless sensor.
Mar 23, 2010 |
3.9 / 5 (11) |
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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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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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Generating electricity from air flow
A group of researchers at the City College of New York is developing a new way to generate power for planes and automobiles based on materials known as piezoelectrics, which convert the kinetic energy of motion into electricity. ...
Nov 22, 2009 |
3.5 / 5 (11) |
2
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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Corky, The Little Brown Mouse That's 100 Percent Green
(PhysOrg.com) -- A computer mouse that’s made from recycled and biodegradable cork and recycled plastic components is one of 18 finalists in the Greener Gadgets Design Competition. But its technology is even ...
Technology / Energy & Green Tech
Feb 12, 2010 |
3.9 / 5 (8) |
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