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Latest Le Sage's theory of gravitation Stories

Researchers Levitate Particles With Sound Waves
2014-01-03 18:09:52

Lee Rannals for redOrbit.com – Your Universe Online University of Tokyo researchers have developed a new technique for levitating objects using sound, allowing the floating objects to be steered in three different directions. The team wrote in a paper that levitation technology works by offsetting the effect of gravity. Scientists have known that an ultrasound standing wave is able to suspend small particles at its sound pressure nodes. “Our manipulation system has two original...

Plasma Waves Move Faster Than Shockwaves
2012-07-20 08:07:31

Lawrence LeBlond for redOrbit.com - Your Universe Online The Sun and the dynamic space weather system that envelops the Earth are what researchers are trying to get a better understanding of with the help of Heliophysics nuggets -- collections of early scientific results, new research techniques and instrument updates. More than 99 percent of the matter found in the universe resembles nothing like what we have here on Earth, according to scientists from NASA´s Goddard Space Flight...

Cancer Cells Could Be Sorted Using Tiny 'Speed Bump' Device
2012-06-12 15:38:13

In life, we sort soiled laundry from clean; ripe fruit from rotten. Two Johns Hopkins engineers say they have found an easy way to use gravity or simple forces to similarly sort microscopic particles and bits of biological matter -- including circulating tumor cells. In the May 25 online issue of Physical Review Letters, German Drazer, an assistant professor of chemical and biomolecular engineering, and his doctoral student, Jorge A. Bernate, reported that they have developed a lab-on-chip...

2012-01-26 12:36:24

To understand long-range interactions between particles at the micrometric scale, researchers utilize methods which are used to study the formation of our universe. Scientists have found that micron-size particles which are trapped at fluid interfaces exhibit a collective dynamic that is subject to seemingly unrelated governing laws. These laws show a smooth transitioning from long-ranged cosmological-style gravitational attraction down to short-range attractive and repulsive forces. The...

2011-02-28 22:21:36

New York University physicists have developed a method for packing microscopic spheres that could lead to improvements in commercial products ranging from pharmaceutical lotions to ice cream. Their work, which relies on an innovative application of statistical mechanics, appears in the Proceedings of the National Academy of Sciences. The study aimed to manipulate the properties of emulsions, which are a mixture of two or more immiscible liquids. The NYU researchers examined droplets of oil in...

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2010-09-01 20:55:08

A new experiment proposed by physicists at the National Institute of Standards and Technology (NIST) may allow researchers to test the effects of gravity with unprecedented precision at very short distances"”a scale at which exotic new details of gravity's behavior may be detectable.Of the four fundamental forces that govern interactions in the universe, gravity may be the most familiar, but ironically it is the least understood by physicists. While gravity's influence is...

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2010-02-17 14:25:13

Scientists measure interference between matter waves separated by 0.1 mm While airplane and rocket experiments have proved that gravity makes clocks tick more slowly "“ a central prediction of Albert Einstein's general theory of relativity "“ a new experiment in an atom interferometer measures this slowdown 10,000 times more accurately than before, and finds it to be exactly what Einstein predicted. The result shows once again how well Einstein's theory describes the real world,...

2009-08-20 14:40:00

An international group of scientists says it has defined the energy density of gravitational waves created immediately after the birth of the universe. Gravitational waves that still ripple across the universe are believed to result from the Big Bang that created the universe more than 13 billion years ago. Albert Einstein predicted the existence of the waves in 1916, and the first evidence of their existence was reported in 1979. Scientists from the Laser Interferometer Gravitational-Wave...

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2009-08-17 19:45:00

Quantum mechanics and Einstein's theory of general relativity are both extremely accurate theories of how the universe works, but all attempts to combine the two into a unified theory have ended in failure. When physicists try to calculate the properties of a quantum theory of gravity, they find quantities that become infinite -- infinities that are so bad they can't be removed by mathematical gambits that work in other areas of physics.Now, Zvi Bern, John Carrasco, and Henrik Johanssen at...


Word of the Day
negawatt
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.