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New Periodic Table
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Oxford ecologist Philip Stewart has designed a new periodic table of the elements. American schools are placing orders daily for Stewart's table, and the Royal Society of Chemists recently sent a copy to every British secondary school. Stewart's is the only remake to achieve widespread...
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10
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Element 113
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New 113th Element Has Been Discovered at RIKEN On July 23 at 18:55, an event that strongly confirmed the creation of the 113th element was observed by a research team directed by Dr. Kosuke Morita of RIKEN. For 80 days, the team bombarded a 209Bi target with an intense 70Zn beam from the "RILAC&qu...
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2
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Chameleon particles
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Call them the Energiser bunny of particle physics: the GammeV collaboration reins in costs, works fast and just keeps going, and going The collaboration of 10 people formed in April 2007 to look for candidates for dark matter and dark energy. Although several members work on other experiments as we...
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5
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Boson 1,500 GeV
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LHC sees hint of boson heavier than Higgs The two experiments that discovered the Higgs boson in 2012 have sensed an intriguing if very preliminary whiff of a possible new elementary particle. Both collaborations announced their observations on 15 December, as they released their first signific...
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Supersymmetry
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Supersymmetry breaking
Authors: Yael Shadmi
These lectures provide a simple introduction to supersymmetry breaking. After presenting the basics of the subject and illustrating them in tree-level examples, we discuss dynamical supersymmetry breaking, emphasizing t...
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34
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General relativity
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Despite the success of general relativity, one of the most important problems in modern physics is finding a theory of quantum gravity that reconciles the continuous nature of gravitational fields with the inherent 'graininess' of quantum mechanics. Recently, Petr Horava at Lawrence Berkeley...
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15
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Space-time
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Sound waves in a fluid behave uncannily like light waves in space. Black holes even have acoustic counterparts.
Could spacetime literally be a kind of fluid, like the ether of pre-Einsteinian physics?
When Albert Einstein proposed his special theory of relativity in 1905, he rejected the 1...
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120
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Baryon-photon ratio
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Using the baryon-photon ratio to calculate the primordial abundances of baryonic matter: The photon density = 3.7 x 102/cm-3 Baryon density = (Universe mass density)/Mass_Proton = 4.2 x 10-31 g cm-3 / 1.66 x 10-24 g = ~2.5 x 10-7 Baryon density / photon density = 2.5 x 10-7 / 3.7 x 102 = ~6.7 x 10-10 For ev...
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Rossiter-McLaughlin effect
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Title: The Earth transiting the Sun as seen from Jupiter's moons: detection of an inverse Rossiter-McLaughlin effect produced by the Opposition Surge of the icy Europa Author: Paolo Molaro, Mauro Barbieri, Lorenzo Monaco, Simone Zaggia, Christophe Lovis We report on a multi-wavelength observ...
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Hawking Radiation
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Title: Do Evaporating Black Holes Form Photospheres? Authors: Jane H. MacGibbon, B. J. Carr, Don N. Page (Version v5) Several authors, most notably Heckler, have claimed that the observable Hawking emission from a microscopic black hole is significantly modified by the formation of a photosphe...
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31
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Henry Moseley
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Tributes paid to First World Wars lost scientist He was to chemistry and physics what Wilfred Owen was to poetry: a phenomenal talent cut down in his prime. But while most people know of Wilfred Owen, few have heard of the brilliant British physicist Henry GJ Moseley (1887-1915), part of a generation...
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Pentaquark
(Preview)
New, higher precision data gathered at the Department of Energy's Thomas Jefferson National Accelerator Facility (Jefferson Lab) shows the Theta-plus pentaquark doesn't appear in another place it was expected.
This intriguing finding contradicts evidence previously presente...
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Dark Matter Annihilation
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Title: Dark Matter as a Possible New Energy Source for Future Rocket Technology Authors: Jia Liu (Version v2) Current rocket technology can not send the spaceship very far, because the amount of the chemical fuel it can take is limited. We try to use dark matter (DM) as fuel to solve this problem. In th...
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22
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Water
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An Erie cancer researcher has found a way to burn salt water, a novel invention that is being touted by one chemist as the "most remarkable" water science discovery in a century. John Kanzius happened upon the discovery accidentally when he tried to desalinate seawater with a radio-freq...
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17
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De Sitter space
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Title: Cosmic Baldness Authors: W. Boucher, G.W. Gibbons We elucidate the mechanism where by gravitational fluctuations are frozen in during a period of inflation but nevertheless within the past horizon of any geodesic observer the spacetime settles down exponentially fast to the de-Sitter m...
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