Guest Blog: In Defence of GPS

October 27, 2010 by Actaphysica
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E=mc2: A Biography of the World’s Most Famous Equation

Already climbing the bestseller lists-and garnering rave reviews-this “little masterpiece”* sheds brilliant light on the equation that changed the world.

“This is not a physics book. It is a history of where the equation [E=mc2] came from and how it has changed the world. After a short chapter on the equation’s birth, Bodanis presents its five symbolic ancestors in sequence, each with its own chapter and each with rich human stories of achievement and failure, encouragement and duplicit

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John Major Jenkins – 2012, Mayan Cosmology, & Shamanism (Part 1)

October 27, 2010 by Actaphysica
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John Major Jenkins is an independent researcher who has devoted himself to reconstructing ancient Mayan cosmology and philosophy. Here John Major Jenkins discusses 2012 and numerology, what might happen on 12/21/12, Mayan shamanism, 12/21/12 misconceptions, the origins of his research, Terence McKenna, and much more. This is a three-part series. For more videos like this, please visit www.BouncingBearFilms.com Brought to you by Bouncing Bear Botanicals – Suppliers of rare, sacred and exotic plants and seeds. http

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Jet Substructure and the Search for Neutral Spin-One Resonances in Electroweak Boson Channels. (arXiv:1010.5253v1 [hep-ph])

October 26, 2010 by Actaphysica
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Strongly coupled models at the TeV scale often predict one or more neutral
spin-one resonances (Z’) which have appreciable branching fractions to
electroweak bosons, namely the Higgs and longitudinal W and Z. These resonances
are usually believed to have multi-TeV mass due to electroweak precision
constraints, placing them on the edge of LHC discovery reach. Searching for
them is made particularly challenging because hadronically decaying electroweak
bosons produced at such high energy will appear very similar to QCD jets. In
this work we revisit the possibility of discovering these resonances at the
LHC, taking advantage of recently developed jet substructure techniques. We
make a systematic investigation of substructure performance for the
identification of highly Lorentz-boosted electroweak bosons, which should also
be applicable to more general new physics searches. We then estimate the
model-independent Z’ discovery reach for the most promising final-state
channels, and find significant improvements compared to previous analyses. For
modes involving the Higgs, we focus on a light Higgs decaying to b quarks. We
further highlight several other novelties of these searches. In the case that
vertex-based b-tagging becomes inefficient at high p_T, we explore the utility
of a muon-based b-tag, or no b-tag at all. We also introduce the mode Z’ -> Zh
-> (invisible)(bb) as a competitive discovery channel.

hep-ex updates on arXiv.org… Continue reading …

Tags: arXiv1010.5253v1, Boson, Channels., Electroweak, hepph, neutral, Resonances, search, SpinOne, Substructure

Third Generation Photovoltaics: Advanced Solar Energy Conversion (Springer Series in Photonics) (Volume 0)

October 26, 2010 by Actaphysica
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Third Generation Photovoltaics: Advanced Solar Energy Conversion (Springer Series in Photonics) (Volume 0)

ISBN13: 9783540265627
Condition: USED – Very Good
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Photovoltaics, the direct conversion of sunlight to electricity, is now the fastest growing technology for electricity generation. Present “first generation” products use the same silicon wafers as in microelectronics. “Second generation” thin-films, now entering the market, have the potential to greatly improve the economics by eliminating material costs. Martin Green, one of the world’s foremost photovoltaic researchers, argues in this book that “second generation” photovoltaics will eventua

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Hubble Data Used to Look 10,000 Years into the Future

October 26, 2010 by Actaphysica
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The globular star cluster Omega Centauri has caught the attention of sky watchers ever since the ancient astronomer Ptolemy first catalogued it 2,000 years ago. Ptolemy, however, thought Omega Centauri was a single star. He didn’t know that the “star” was actually a beehive swarm of nearly 10 million stars, all orbiting a common center of gravity.

The stars are so tightly crammed together that astronomers had to wait for the powerful vision of Hubble Space Telescope to peer de [...]

International Space Fellowship… Continue reading …

Tags: 10000, data, Future, Hubble, Into, Look, used, Years

New Physics

October 26, 2010 by Actaphysica
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1) The space inside of an atom is not empty, but filled with space matter. 2) Electron (charged particle) has electric field and magnetic field in right angle regardless of any kind of its motions. 3) Wave nature of particles is not the property belong them, but it depends on the energy background that the particle exist. 4) In non-excited state, electrons in an atom have no any motions. 5) The magnetic field created by a permanent magnet is caused by the alignment of motionless electrons. 6) Oscillation of one field (electric/magnetic) in space creates no other field. 7) Light is oscillating magnetic lines and light travels as transverse wave in magnetic lines. Releasing of energy in a chemical or nuclear reaction is due to the releasing/expansion/explosion of space matter. 9) Only bond making reactions release energy and all bond breaking reactions absorb energy. This principle is applicable for both chemical and nuclear reactions. The 8th Asian International Seminar on Atomic and Molecular Physics (University of Western Australia). physics-edu.org physics-edu.org
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Hot Conformal Gauge Theories. (arXiv:1010.4798v1 [hep-ph])

October 26, 2010 by Actaphysica
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We compute the nonzero temperature free energy up to the order g^6 \ln(1/g)
in the coupling constant for vector like SU(N) gauge theories featuring matter
transforming according to different representations of the underlying gauge
group. The number of matter fields, i.e. flavors, is arranged in such a way
that the theory develops a perturbative stable infrared fixed point at zero
temperature. Due to large distance conformality we trade the coupling constant
with its fixed point value and define a reduced free energy which depends only
on the number of flavors, colors and matter representation.

We show that the reduced free energy changes sign, at the second, fifth and
sixth order in the coupling, when decreasing the number of flavors from the
upper end of the conformal window. If the change in sign is interpreted as
signal of an instability of the system then we infer a critical number of
flavors. Surprisingly this number, if computed to the order g^2, agrees with
previous predictions for the lower boundary of the conformal window for
nonsupersymmetric gauge theories. The higher order results tend to predict a
higher number of critical flavors. These are universal properties, i.e. they
are independent on the specific matter representation.

hep-th updates on arXiv.org… Continue reading …

Tags: arXiv1010.4798v1, Conformal, Gauge, hepph, theories.

Designing Audio Power Amplifiers Reviews

October 26, 2010 by Dyau
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Designing Audio Power Amplifiers

Master the art of audio power amplifier design This comprehensive book on audio power amplifier design will appeal to members of the professional audio engineering community as well as the hobbyist. Designing Audio Power Amplifiers begins with power amplifier design basics that a novice can understand and moves all the way through to in-depth design techniques for the very sophisticated audiophile and professional audio power amplifier designer. This is the single best source of knowledge

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Contract Signing Gives Galileo System its Operators

October 26, 2010 by Actaphysica
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A few swipes of the pen in Brussels yesterday forged the latest link in the chain of Europe’s Galileo satellite navigation system. ESA signed a contract with Spaceopal, the company providing ground-based services needed to operate the Galileo constellation once it has been fully deployed.

ESA, in its role as designated procurement agent on behalf of the European Union, followed a standard procurement procedure known as ‘Competitive Dialogue’, at the end of which Spaceopal provided ESA wit [...]