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Physics news 1234

Inventor Doesn't Dare Say 'Perpetual Motion Machine'

February 07, 2008 | User rating: 4.4 / 5 after 257 vote(s) | User comments: 52

Thane Heins knows the track record of inventors that claim to make breakthroughs in power generation methods, especially when they claim to defy the second law of thermodynamics. Every so often, a (usually ...


Physicist Claims First Real Demonstration of Cold Fusion

May 27, 2008 | User rating: 4.6 / 5 after 273 vote(s) | User comments: 47

To many people, cold fusion sounds too good to be true. The idea is that, by creating nuclear fusion at room temperature, researchers can generate a nearly unlimited source of power that uses water as fuel ...


A Test of the Copernican Principle

May 22, 2008 | User rating: 4.3 / 5 after 93 vote(s) | User comments: 37

The Copernican principle states that the Earth is not the center of the universe, and that, as observers, we don’t occupy a special place. First stated by Copernicus in the 16th century, today the idea is ...


Nonlocality of a Single Particle Demonstrated Without Objections

November 09, 2007 | User rating: 4.7 / 5 after 151 vote(s) | User comments: 33

Usually when physicists talk about nonlocality in quantum mechanics, they’re referring to the fact that two particles can have immediate effects on each other, even when separated by large distances. Einstein ...


Before the Big Bang: A Twin Universe?

April 09, 2008 | User rating: 4.3 / 5 after 266 vote(s) | User comments: 30

Until very recently, asking what happened at or before the Big Bang was considered by physicists to be a religious question. General relativity theory just doesn’t go there – at T=0, it spews out zeros, infinities, ...


Researchers Prove Existence of New Basic Element for Electronic Circuits -- 'Memristor'

April 30, 2008 | User rating: 4.5 / 5 after 196 vote(s) | User comments: 28

HP today announced that researchers from HP Labs have proven the existence of what had previously been only theorized as the fourth fundamental circuit element in electrical engineering.


Are We in the Peak of an Oil Bubble?

July 07, 2008 | User rating: 4.3 / 5 after 118 vote(s) | User comments: 27

Since 2003, worldwide oil prices have quadrupled. According to a new study, the price of oil is rising at a faster-than-exponential rate, and cannot be sustained. In other words, we’re in the midst of an oil ...


What Anthropic Reasoning Can Really Tell Us

February 08, 2008 | User rating: 4 / 5 after 96 vote(s) | User comments: 25

Anthropic reasoning is under debate in the scientific community, and is considered by some as a cop-out. It has now lost further ground as physicists show that anthropic conclusions mostly reflect our biases ...


The Dark Side of Light

February 19, 2008 | User rating: 4.5 / 5 after 190 vote(s) | User comments: 23

Light may not seem very interesting in our everyday lives. But to scientists, light’s properties are a constant source of intrigue. The nature of light as both wave and particle, light as the universal speed ...


Researchers create mercury-absorbent container linings for broken CFLs

June 27, 2008 | User rating: 4.5 / 5 after 19 vote(s) | User comments: 22

With rising energy prices and greater concern over global warming, compact fluorescent lamps (CFLs) are having a successful run. Sales of the curlicue, energy-sipping bulbs, which previously had languished ...


A Critique of Shortsighted Anthropic Principles

May 16, 2008 | User rating: 3.7 / 5 after 58 vote(s) | User comments: 21

Many people marvel that we live in a universe that seems to be precisely tailored to suit the development of intelligent life. The observation is the basis for some forms of "Anthropic Principles" that strive to explain why ...


World's Largest Quantum Bell Test Spans Three Swiss Towns

June 16, 2008 | User rating: 4.7 / 5 after 114 vote(s) | User comments: 21

In an attempt to rule out any kind of communication between entangled particles, physicists from the University of Geneva have sent two entangled photons traveling to different towns located 18 km apart – ...


'Squeezed' Light May Improve Gravitational Wave Detectors

June 05, 2008 | User rating: 4.6 / 5 after 54 vote(s) | User comments: 20

A research collaboration has taken steps toward improving the sensitivity of gravitational wave detectors, devices designed to measure distance changes as minute as one-thousandth the diameter of a proton. ...


First stars might have been powered by dark matter

February 12, 2008 | User rating: 4.2 / 5 after 62 vote(s) | User comments: 18

For a long time, scientists have assumed that the very first stars were powered by fusion, in processes similar to what goes on in present day stars. But a new theory is emerging to challenge that view. “The first stars were ...


Physicists Demonstrate How Information Can Escape From Black Holes

May 14, 2008 | User rating: 4.4 / 5 after 98 vote(s) | User comments: 17

Physicists at Penn State have provided a mechanism by which information can be recovered from black holes, those regions of space where gravity is so strong that, according to Einstein's theory of general ...


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