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Physics / Physics news 1234

Physicists Demonstrate How Information Can Escape From Black Holes

May 14, 2008 | User rating: 4.4 / 5 after 80 vote(s) | User comments: 15

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 ...


Black holes not black after all

May 12, 2008 | User rating: 4.1 / 5 after 54 vote(s) | User comments: 11

International scientists have used flowing water to simulate a black hole, testing Stephen Hawking's theory that black holes are not black after all.


A Critique of Shortsighted Anthropic Principles

12 hours ago | User rating: 3.8 / 5 after 34 vote(s) | User comments: 7

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 ...


New efficiency record for solar cells

May 14, 2008 | User rating: 4.7 / 5 after 40 vote(s) | User comments: 6

Physicist Bram Hoex and colleagues at Eindhoven University of Technology, together with the Fraunhofer Institute in Germany, have improved the efficiency of an important type of solar cell from 21.9 to 23.2 percent (a relative ...


Rochester's Omega Laser Receives 50-Fold Power Increase to Become 'Petawatt' Laser

13 hours ago | User rating: 4.5 / 5 after 13 vote(s) | User comments: 2

The University of Rochester will mark another important step in the effort toward attaining sustainable fusion, the ultimate source of clean energy, Friday, May 16.


Argonne scientists use lasers to align molecules

May 13, 2008 | User rating: 4.1 / 5 after 7 vote(s) | User comments: 1

Protein crystallographers have only scratched the surface of the human proteins important for drug interactions because of difficulties crystallizing the molecules for synchrotron x-ray diffraction.


First measurement of entangled states in nitrogen

May 15, 2008 | User rating: 4.6 / 5 after 23 vote(s) | User comments: 1

When atoms form molecules, they share their outer electrons and this creates a negatively charged cloud. Here, electrons buzz around between the two positively charged nuclei, making it impossible to tell ...