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Event horizon
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Title: A signature for the absence of event horizons Authors: J. Barbieri, G. Chapline A sharp dip in the spectrum of gamma rays coming from compact objects below 70 MeV would be an unambiguous signal that compact astrophysical objects have a physical surface, and there is no event horizon. Observa...
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leap second 2005
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To make up for the slowing down of the Earth's rotation, an extra second will be added to 2005.
The “leap second" is the first in seven years and reflects the variation in the Earth's rotation. For the first time since 1998, the International Earth Rotation and Reference Systems Service (IERS[/...
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axions
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Title: Status report of the Tokyo axion helioscope experiment Authors: Y. Inoue, M. Minowa, Y. Akimoto, R. Ota, T. Mizumoto, A. Yamamoto We have searched for solar axions with a detector which consists of a 4T x 2.3m superconducting magnet, PIN-photodiode X-ray detectors, and an altazimu...
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DM-Ice17
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Title: First data from DM-Ice17 Author: DM-Ice Collaboration: J. Cherwinka, D. Grant, F. Halzen, K. M. Heeger, L. Hsu, A. J. F. Hubbard, A. Karle, M. Kauer, V. A. Kudryavtsev, C. Macdonald, R. H. Maruyama, S. Paling, W. Pettus, Z. P. Pierpoint, B. N. Reilly, M. Robinson, P. Sandstrom, N. J. C. Spooner...
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Antimatter
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1 2 3 4 5 … 6
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(Preview)
What happens when a hydrogen atom meets an antihydrogen atom?
Can they form a molecule?
The answer to this second question is a definite no according to two theoretical physicists in Germany who have derived the first analytical expression for the stability of matter-antimatter mo...
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Quantum vacuum
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Title: A magneto-electric quantum wheel Authors: Alexander Feigel Here we show that self-propulsion in quantum vacuum may be achieved by rotating or aggregating magneto-electric nano-particles. The back-action follows from changes in momentum of electro-magnetic zero-point fluctuation...
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antiproton
(Preview)
The antiproton (p, pronounced p-bar), which is also sometimes referred to as a negatron, is the antiparticle of the proton. The antiproton was experimentally confirmed in 1955 by University of California, Berkeley physicists Emilio Segrč and Owen Chamberlain, for which they were awarded the 19...
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Special unitary group SU(5)
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Title: A Renormalisable Supersymmetric SU(5) Model Authors: Jun-hui Zheng, Da-Xin Zhang In the Supersymmetric SU(5) Model of Unification with the Missing Partner Mechanism, we present a renormalisable model using the Georgi-Jarlsog mechanism to describe the fermion masses and mixing. At th...
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Quantum wavefunction
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Canadian researchers discover method for direct measurement of the quantum wavefunction Scientists around the world now have a new tool to investigate the elementary units of nature. Until now, the quantum wavefunction was believed to be impossible to measure directly, since the very act of obs...
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Extreme materials
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A series of lectures and discussions on the subject of Space Materials for High Temperature Applications will be taking place from 26. to 27. June 2007, at the Politecnico di Torino in Turin, Italy. The Extremat Consortium, together with the Bayern Innovativ GmbH, Department BayTech, would like t...
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21
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Plutonium batteries
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Defence analysts say the long-lasting, plutonium-powered batteries the Department of Energy wants to produce at a new $300 million facility in Idaho could eventually wind up in everything from space-based satellite killers to battlefield laptop computers.
That's contrary to how the agen...
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Nobel Prize in Physics
(Preview)
Nobel Prize in Physics 2011 Saul Perlmutter, Brian P. Schmidt, Adam G. Riess The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics for 2011 with one half to Saul Perlmutter The Supernova Cosmology Project Lawrence Berkeley National Laboratory and University of Cali...
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Light
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(Preview)
Light may arise from tiny relativity violations, according to a new theory.
Speaking most recently at last month's American Physical Society meeting of the Division of Atomic, Molecular, and Optical Physics in Nebraska, Alan Kostelecky of Indiana University described how light mi...
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Crystal structure prediction
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Researchers at the University of Bradford have made a breakthrough in the prediction of the crystal structures of small organic molecules as part of an international scientific competition. The team have met the challenge by correctly predicting the crystal structures of all four Blind Test com...
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Lightbulbs
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New development could lead to more effective lightbulbs US researchers say they have developed a technique that can significantly improve the efficiency of the traditional incandescent lightbulb. These older bulbs have been phased out in many countries because they waste huge amounts of energ...
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