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Latest Uncertainty principle Stories

2011-08-01 12:07:38

The quantum world allows you to answer questions correctly when you don't even have all the information you should need No-one likes a know-it-all but we expect to be able to catch them out: someone who acts like they know everything but doesn't can always be tripped up with a well-chosen question. Can't they? Not so. New research in quantum physics has shown that a quantum know-it-all could lack information about a subject as a whole, yet answer almost perfectly any question about the...

2011-06-21 17:41:47

Once we learn the relationship between a cue and its consequences"”say, the sound of a bell and the appearance of the white ice cream truck bearing our favorite chocolate cone"”do we turn our attention to that bell whenever we hear it? Or do we tuck the information away and marshal our resources to learning other, novel cues"”a recorded jingle, or a blue truck? Psychologists observing "attentional allocation" now agree that the answer is both, and they have arrived at two...

2010-11-18 17:16:36

Heisenberg Uncertainty Principle sets limits on Einstein's 'spooky action at a distance,' new research finds Researchers have uncovered a fundamental link between the two defining properties of quantum physics. Stephanie Wehner of Singapore's Centre for Quantum Technologies and the National University of Singapore and Jonathan Oppenheim of the United Kingdom's University of Cambridge published their work today in the latest edition of the journal Science. The result is being heralded as a...

2010-07-27 15:39:09

Uncertainty in the presence of a quantum memory A quantum particle is hard to grasp, because one cannot determine all its properties precisely at the same time. Measurements of certain parameter pairs such as position and momentum remain inaccurate to a degree given by Heisenberg's Uncertainty Principle. This is important for the security of quantum cryptography, where information is transmitted in the form of quantum states such as the polarization of particles of light. A group of...

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2010-07-01 09:20:08

In a study published in the July 1 issue of the journal Nature, Dartmouth researchers describe one example of the microscopic quantum world influencing--even dominating, they say--the behavior of something in the macroscopic classical world. "One major question in physics has to do with the connection between the microscopic and macroscopic worlds," said Alex Rimberg, associate professor of physics at Dartmouth College. In the microscopic world, tiny sub-atomic particles such as photons and...

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2010-03-04 08:57:42

Probability matching is tempting, but strategists are better off going by the numbers when choosing winners in the NCAA men's basketball tournament BLOOMINGTON, Ind. -- Soon Americans nationwide will begin poring over NCAA men's basketball tournament brackets in their annual attempt at glory -- and maybe even a little cash -- in winning the ubiquitous, albeit illegal, office pool. Some will go by the numbers, picking the team in each matchup with the best ranking or seed. Others use...

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2009-03-26 15:42:50

Exquisitely sensitive microwave amplifier increases nano-scale measurement accuracy; could lead to quantum computing breakthroughs In the weird world of quantum mechanics, sub-atomic particles such as electrons and photons behave in strange ways that make no sense on the human scale. One of the counter-intuitive concepts of quantum mechanics is the uncertainty principle, which says that you can't pin a particle down. That means at any given moment, you can't know exactly both a particle's...

2008-10-03 09:00:21

By KATE O'HARE By Kate O'Hare Zap2it.com WHEN A TV SERIES hits its fifth season, it can start to get a little mushy around the middle. David Krumholtz, star of CBS' mathematics/crime drama "Numb3rs," which reaches that milestone at 10 tonight, feels his show is still lean and mean. "I honestly think we hit our stride last year," he says. "Knowing what we've accomplished so far this season, I really do believe, it doesn't get much better than this. "If last year we hit our stride, this...

2008-01-15 06:00:09

There is no attractive gravitational force between matter. Gravitation is based on a repelling force. Gravitation arises from particle pressure towards matter. These are some claims of the General Theory of Matter, which is based upon the predicted existence of a very small and extremely abundant particle, the universal energy unit, here called the K-particle. The theory shows how local disturbance of the K flux (K pressure) can generate all known forces. Furthermore it demonstrates working...

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2005-10-11 14:15:00

A hundred years ago, we took the first steps in recognising, at the level of elementary physical events, the dual character of nature that had been postulated in natural philosophy. Albert Einstein was the first who saw Max Planck's quantum hypothesis leading to this dual character. Einstein suggested the photon have an electromagnetic wave character, although photons had previously been considered as particles. That was the quintessence of his work on the photoelectric effect. Later in...


Word of the Day
malpais
  • The ragged surface of a lava-flow.
'Malpais' translates from Spanish as 'bad land.'