* Astronomy

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A new type of dark matter made up of collections of atoms that form balls up to 20 centimetres in size has been predicted by two theorists in Scotland and Denmark. The balls, which could weigh about 10¹¹ kilograms each, would be hard to detect but may exist inside heavy stars. The physicists think the ba...

Blobrana · Blobrana

Mathematicians have mapped the inner workings of one of the most complicated structures ever studied: the object known as the exceptional Lie group E8. This achievement is significant both as an advance in basic knowledge and because of the many connections between E8 and other areas, including...

Blobrana · Blobrana

Raman effect discovered on the 28th February, 1928. Raman scattering or the Raman effect is the inelastic scattering of a photon. It was discovered by Sir Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids, and by Grigory Landsberg and Leonid Mandelstam in crystals. R...

Blobrana · Blobrana

Normally, we think of building blocks as static objects. For instance, the brick and mortar used to build the local bank remain pretty much the same from the day it's built to the day it's torn down. But the building blocks of ordinary matter are different. These bricks are particles called quarks,...

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Name Symbol Antiparticle Charge (e) Spin Mass (GeV/c²) Interaction mediated ExistencePhoton Self 1 Electromagnetism ConfirmedW boson W- W+ -1 1 80.4 Weak interaction ConfirmedZ boson Z Self 1 91.2 Weak interaction ConfirmedGluon g Self 1 Strong interaction ConfirmedHiggs boson H° Self...

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Scientists have solved a question about the nature of plutonium that had remained a mystery since the Manhattan Project. Plutonium behaves like no other element in nature. The bonding of its electrons causes its crystal structure to be uneven, similar to a mineral, and the nucleus is unstable...

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UK overtakes US in physics research Britain has overtaken the US in the standard of its physics research, according to the Institute of Physics. While the US does more work in the field, British studies have received more citations per paper, which puts the UK second in the world to Canada, the resear...

Blobrana · Blobrana

While the shiny material of pearls and abalone shells has long been prized for its iridescence and aesthetic value in jewellery and decorations, scientists admire mother-of-pearl for other physical properties as well. Also called nacre ("NAY-ker"), mother-of-pearl is 3,000 times...

Blobrana · Blobrana

After publication of his work on the aberration, British astronomer James Bradley continued to observe, to develop and check his second major discovery, the nutation of the Earth's axis, but he did not announce this in print until 14 February 1748 (Phil. Trans. xlv. I), when he had tested its realit...

Blobrana · Blobrana

Thermionic emission is the heat-induced flow of charge carriers from a surface or over a potential-energy barrier. The phenomenon was initially reported in 1873 by Frederick Guthrie in Britain. While doing work on charged objects, Guthrie discovered that a red-hot iron sphere with a positive ch...

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Title: A proposal to solve some puzzles in semileptonic B decays Authors: Florian U. Bernlochner, Zoltan Ligeti, Sascha Turczyk Some long-standing problems in the experimental data for semileptonic b -> c l nu decay rates have resisted attempts to resolve them, despite substantial efforts....

Blobrana · Blobrana

Title: Enhancing l_i \to 3 l_j with the Z^0-penguin Authors: M. Hirsch, F. Staub, A. Vicente Lepton flavour violation (LFV) has been observed in neutrino oscillations. For charged lepton FV decays only upper limits are known, but sizable branching ratios are expected in many neutrino mass models...

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Title: First evidence of pep solar neutrinos by direct detection in Borexino Authors: The Borexino Collaboration (Submitted on 14 Oct 2011) We observed, for the first time, solar neutrinos in the 1.0-1.5 MeV energy range. We measured the rate of pep solar neutrino interactions in Borexino to be [3...

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From: Scientists from all major Dutch universities officially launched a website on Tuesday where all their research material can be acces...

Blobrana · Blobrana

Title: The Heisenberg-Euler Effective Action: 75 years on Authors: Gerald V. Dunne On this 75th anniversary of the publication of the Heisenberg-Euler paper on the full non-perturbative one-loop effective action for quantum electrodynamics I review their paper and discuss some of the impact i...

Topic		Started By	Replies	Last Post
	Froggatt-Nielsen Mechanism (Preview) A new type of dark matter made up of collections of atoms that form balls up to 20 centimetres in size has been predicted by two theorists in Scotland and Denmark. The balls, which could weigh about 10¹¹ kilograms each, would be hard to detect but may exist inside heavy stars. The physicists think the ba...	Blobrana	1	Mar 3 16:18 2012 by Blobrana
	Lie group E8 ( 1 2 ) Universe Lie group Quantum (Preview) Mathematicians have mapped the inner workings of one of the most complicated structures ever studied: the object known as the exceptional Lie group E8. This achievement is significant both as an advance in basic knowledge and because of the many connections between E8 and other areas, including...	Blobrana	19	Mar 1 13:06 2012 by Blobrana
	Raman effect (Preview) Raman effect discovered on the 28th February, 1928. Raman scattering or the Raman effect is the inelastic scattering of a photon. It was discovered by Sir Chandrasekhara Venkata Raman and Kariamanickam Srinivasa Krishnan in liquids, and by Grigory Landsberg and Leonid Mandelstam in crystals. R...	Blobrana	1	Feb 28 08:02 2012 by Blobrana
	Quantum Chromodynamics Quantum (Preview) Normally, we think of building blocks as static objects. For instance, the brick and mortar used to build the local bank remain pretty much the same from the day it's built to the day it's torn down. But the building blocks of ordinary matter are different. These bricks are particles called quarks,...	Blobrana	7	Feb 26 16:22 2012 by Blobrana
	Bosons Boson (Preview) Name Symbol Antiparticle Charge (e) Spin Mass (GeV/c²) Interaction mediated ExistencePhoton Self 1 Electromagnetism ConfirmedW boson W- W+ -1 1 80.4 Weak interaction ConfirmedZ boson Z Self 1 91.2 Weak interaction ConfirmedGluon g Self 1 Strong interaction ConfirmedHiggs boson H° Self...	Blobrana	1	Feb 23 23:49 2012 by Blobrana
	Plutonium Elements (Preview) Scientists have solved a question about the nature of plutonium that had remained a mystery since the Manhattan Project. Plutonium behaves like no other element in nature. The bonding of its electrons causes its crystal structure to be uneven, similar to a mineral, and the nucleus is unstable...	Blobrana	3	Feb 23 08:09 2012 by Blobrana
	UK physics research (Preview) UK overtakes US in physics research Britain has overtaken the US in the standard of its physics research, according to the Institute of Physics. While the US does more work in the field, British studies have received more citations per paper, which puts the UK second in the world to Canada, the resear...	Blobrana	0	Feb 22 22:16 2012 by Blobrana
	Mother-of-pearl (Preview) While the shiny material of pearls and abalone shells has long been prized for its iridescence and aesthetic value in jewellery and decorations, scientists admire mother-of-pearl for other physical properties as well. Also called nacre ("NAY-ker"), mother-of-pearl is 3,000 times...	Blobrana	1	Feb 16 23:41 2012 by Blobrana
	Nutation (Preview) After publication of his work on the aberration, British astronomer James Bradley continued to observe, to develop and check his second major discovery, the nutation of the Earth's axis, but he did not announce this in print until 14 February 1748 (Phil. Trans. xlv. I), when he had tested its realit...	Blobrana	0	Feb 14 08:02 2012 by Blobrana
	Thermionic emission (Preview) Thermionic emission is the heat-induced flow of charge carriers from a surface or over a potential-energy barrier. The phenomenon was initially reported in 1873 by Frederick Guthrie in Britain. While doing work on charged objects, Guthrie discovered that a red-hot iron sphere with a positive ch...	Blobrana	0	Feb 13 16:35 2012 by Blobrana
	Semileptonic B Decays (Preview) Title: A proposal to solve some puzzles in semileptonic B decays Authors: Florian U. Bernlochner, Zoltan Ligeti, Sascha Turczyk Some long-standing problems in the experimental data for semileptonic b -> c l nu decay rates have resisted attempts to resolve them, despite substantial efforts....	Blobrana	0	Feb 10 16:16 2012 by Blobrana
	Lepton flavour violation (Preview) Title: Enhancing l_i \to 3 l_j with the Z^0-penguin Authors: M. Hirsch, F. Staub, A. Vicente Lepton flavour violation (LFV) has been observed in neutrino oscillations. For charged lepton FV decays only upper limits are known, but sizable branching ratios are expected in many neutrino mass models...	Blobrana	0	Feb 10 16:13 2012 by Blobrana
	Borexino (Preview) Title: First evidence of pep solar neutrinos by direct detection in Borexino Authors: The Borexino Collaboration (Submitted on 14 Oct 2011) We observed, for the first time, solar neutrinos in the 1.0-1.5 MeV energy range. We measured the rate of pep solar neutrino interactions in Borexino to be [3...	Blobrana	0	Feb 10 11:53 2012 by Blobrana
	Research Free?l (Preview) From: Scientists from all major Dutch universities officially launched a website on Tuesday where all their research material can be acces...	Blobrana	1	Feb 10 00:27 2012 by Blobrana
	Quantum electrodynamics Quantum (Preview) Title: The Heisenberg-Euler Effective Action: 75 years on Authors: Gerald V. Dunne On this 75th anniversary of the publication of the Heisenberg-Euler paper on the full non-perturbative one-loop effective action for quantum electrodynamics I review their paper and discuss some of the impact i...	Blobrana	0	Feb 9 10:22 2012 by Blobrana
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