• Suggestion Numerical Analysis Forum

    Updated: 2012-04-30 19:48:29
    Hi, prompted by another person's post I was wondering whether it was possible to start a Numerical Analysis section for mathematicians, scientists and engineers. I could imagine there's a potentially...

  • Force required to tip block backwards

    Updated: 2012-04-30 19:26:00
    *1. The problem statement, all variables and given/known data* There is a 2-D block with height *H*, width *W*, and mass *M*. (H W) A force *F* is applied from behind the block at a height *0.1H*...

  • Conditional probability on a finite set

    Updated: 2012-04-30 19:15:26
    T ≡ "two coins tossed 7 times by two people A and B giving outcomes [itex][A^+B^+, A^-B^+, A^+B^-, A^-B^+, A^+B^+, A^-B^-, A^-B^+][/itex], where + = heads and - = tails" Calculate...

  • What is mass?

    Updated: 2012-04-30 19:07:00
    Good afternoon. I am wondering what exactly is mass. Some say, quite inaccurately, that it is a measure of how much "stuff" an object has (what do they mean by "stuff"?). Others say that it's a...

  • Higgs Boson and confidence levels

    Updated: 2012-04-30 19:02:32
    What is the current state of things? Are they fairly confident that the Higgs exist despite more data being needed for the 5-sigma confidence level? Could it still (realistically) turn out to not...

  • Accelerometer tilt error correction

    Updated: 2012-04-30 18:48:23
    I am using arduino and accelerometer MMA7341 to measure the acceleration in x direction of an oscillating metal table. But the mounting of the accelerometer is tilted by a small angle (say Q) . Is it...

  • Stress + Shear stress

    Updated: 2012-04-30 18:33:46
    *1. The problem statement, all variables and given/known data* A draw bar between a tractor and trailer is made from a length of steel bar 0.08m by 0.012m rectangular cross-section. The load is...

  • Dimensional Analysis

    Updated: 2012-04-30 18:26:38
    *1. The problem statement, all variables and given/known data* how do i deduce the dimension of the following using dimensional analysis enthropy, surface charge density, inductance,...

  • Center Cap vs Tire Diameter Rotation

    Updated: 2012-04-30 18:10:49
    Hello all, Just trying to find a formula and need some help. If a tire is 22 inches in diameter, what are the RPMs of the outer diameter of a 22 inch tire versus the RPMs of the outer diameter...

  • What Is The Large Hadron Collider?

    Updated: 2012-04-30 12:14:24
    Most of all, the LHC is a machine with the purpose of breaking the known laws of the Universe. Hi All, Us QD folks appreciate all the questions and comments we get about the Large Hadron Collider, what we do there, and how we do it. Being head-deep in physics, though, I sometimes get the [...]

  • Table-Top Tests for Quantum Gravity (April 30, 2012 podcast)

    Updated: 2012-04-30 05:00:00
    Probing the Planck scale with current quantum optical technology

  • CMS collaboration discovers its first new particle

    Updated: 2012-04-27 10:48:43
    Members of the CMS collaboration announced the experiment’s first discovery of a new particle today.

  • Citizen scientists find new purpose in pulsar search

    Updated: 2012-04-26 19:39:10
    A project that lets citizen volunteers contribute to scientists' search for gravitational waves, theoretical ripples in the fabric of space-time, has expanded its efforts -- with impressive results.

  • Living Reviews in Relativity: “Quantum Measurement Theory in Gravitational-Wave Detectors”

    Updated: 2012-04-26 12:30:43
    Living Reviews in Relativity has published a new review article on “Quantum Measurement Theory in Gravitational-Wave Detectors” by Stefan L. Danilishin and Farid Ya. Khalili on April 26, 2012. Please find the abstract and further details below. —————— PUB.NO. lrr-2012-5 Danilishin, Stefan and Khalili, Farid Ya. “Quantum Measurement Theory in Gravitational-Wave Detectors” ACCEPTED: 2012-03-02 PUBLISHED: 2012-04-26 FULL ARTICLE AT: http://www.livingreviews.org/lrr-2012-5 ABSTRACT: The fast progress in improving [...]

  • PhD position in Analytical and Numerical Methods in General Relativity at the AEI

    Updated: 2012-04-26 10:41:49
    The Max Planck Institute for Gravitational Physics (Albert Einstein Institute) invites applications for a DFG-funded PhD position in the division of Geometric Analysis and Gravitation. The position will be part of the International Max Planck Research School (IMPRS). The successful candidate will work with Dr. Oliver Rinne on a combination of analytical and numerical methods applied [...]

  • World’s largest digital camera one step closer to reality

    Updated: 2012-04-24 16:08:57
    Perched high atop Cerro Pachón in the Chilean Andes, the Large Synoptic Survey Telescope will take the largest, fastest, most detailed pictures of the Southern Hemisphere’s night sky. With these images, researchers around the world will seek to reveal the nature of dark matter and dark energy—and to answer a host of other questions in [...]

  • April 2012 Physics Books

    Updated: 2012-04-21 09:00:09
    Education Physics Search Physics Basic Concepts Theories Experiments Share Free Physics Newsletter Sign Up Discuss in my forum April 2012 Physics Books By Andrew Zimmerman Jones About.com Guide April 21, 2012 My Bio Headlines Forum RSS Follow me : on Facebook Twitter March was kind of a slow month for new physics book releases , but April sees things picking up again . There are five books of particular interest in the realm of science and technology this month , and I've got them covered in our April 2012 book list The range is wide , from one about how the Earth could be destroyed just in time for Mayan calendar fanaticism to one about how we could save ourselves from an energy crisis and one that explains how to survive the crazy adventures of an intrepid time traveler Comments 0 See

  • Fermi uses gamma rays to unearth clues about “empty” space

    Updated: 2012-04-20 01:10:12
    The team working on the Large Area Telescope has discovered that most gamma rays detected by LAT cannot be attributed to individual point sources.

  • Listening for the sound of science

    Updated: 2012-04-18 15:43:13
    Ever wonder what physics sounds like? Composer and network engineer Domenico Vicinanza recently created a musical score that mimics the tracks of subatomic particles.

  • Quantum Gravity at Scientific American

    Updated: 2012-04-17 19:17:06
    Scientific American is doing a good job this month of putting out stories related to quantum gravity that actually make sense, steering clear of the multiverse and other pseudo-science. This month’s magazine has a very nice article by Steven Carlip … Continue reading →

  • “Quantum Gravity” by C. Kiefer (third edition)

    Updated: 2012-04-17 15:09:43
    Claus Kiefer: “Quantum Gravity” (Third Edition) International Series of Monographs on Physics 155, 408 pages Oxford University Press 2012 Table of Contents: 1: Why quantum gravity? 2: Covariant approaches to quantum gravity 3: Parametrized and relational systems 4: Hamiltonian formulation of general relativity 5: Quantum geometrodynamics 6: Quantum gravity with connections and loops 7: Quantization of black holes 8: Quantum cosmology 9: String theory 10: Phenomenology, decoherence, and [...]

  • Testing the Holographic Principle

    Updated: 2012-04-12 19:38:07
    Adrian Cho at Science magazine this week has an article about Craig Hogan’s project to build a “holometer” and somehow test the “holographic principle”. Since this promises some sort of experimental test of fashionable ideas about quantum gravity, it has … Continue reading →

  • Quantum mechanics in popular-science books

    Updated: 2012-04-11 15:00:00
    Physics World's podcast team discusses the enduring appeal of quantum mechanics

  • Two proposed linear collider programs to be joined under new governance

    Updated: 2012-04-11 14:00:48
    The world’s two most mature proposals for a collider complementary to the Large Hadron Collider are joining collaborative forces. The two proposed electron-positron collider projects, the Compact Linear Collider Study and the International Linear Collider, have traditionally been viewed as casual rivals–both in the running to be built as the future complement to CERN’s proton-smashing [...]

  • PhD Position in Quantum Gravity at Radboud University, Nijmegen, The Netherlands

    Updated: 2012-04-10 17:07:24
    One or more PhD positions in quantum gravity will become available in the autumn of 2012 in the new research group headed by Prof. Renate Loll at the Institute for Mathematics, Astrophysics and Particle Physics (IMAPP) of the Radboud University in Nijmegen, The Netherlands. The successful applicants will work under the supervision of Loll in [...]

  • Tenure Track Position in Quantum Gravity at Radboud University, Nijmegen, The Netherlands

    Updated: 2012-04-10 17:01:28
    As part of a new initiative of the Institute for Mathematics, Astrophysics and Particle Physics (IMAPP) and the Department of Theoretical High-Energy Physics in particular, we are looking for an Assistant Professor in Quantum Gravity (Tenure Track). This position will further strengthen the new research focus on Quantum Gravity, which was initiated with the recent [...]

  • 2nd BNU International Summer School on Quantum Gravity, Beijing (China)

    Updated: 2012-04-10 01:59:06
    The Beijing Normal University (BNU) International Summer School on Quantum Gravity is intended to provide a pedagogical introduction for graduate students and young post-docs to the main fields closely related to loop quantum gravity. Topics include: Loop quantum gravity, Loop quantum cosmology, Spin foams, Group field theory, Regge calculus Lecturers: - Abhay Ashtekar (Penn State Univ, USA) - Benjamin [...]

  • Tevatron experiment confirms LHC discovery of Chi-b (P3) particle

    Updated: 2012-04-09 17:10:38
    The DZero experiment at Fermilab’s Tevatron collider has confirmed the discovery of a new particle from an experiment at CERN’s Large Hadron Collider. In December, scientists on the ATLAS experiment at the LHC announced that they had unearthed in their data a never-before-seen particle composed of two bottom quarks, called Chi-b (P3). The DZero collaboration [...]

  • LHC physics data taking gets underway at new record collision energy of 8 TeV

    Updated: 2012-04-05 09:29:31
    At just after midnight in Geneva, operators brought stable beams of protons into collisions at the record-breaking energy of 8 TeV — 4 TeV per beam — for the first time. This marked the beginning of the LHC experiments’ data-taking for physics for 2012. “The experience of two good years of running at 3.5 TeV [...]

  • Physicists mobilize to rescue U.S. neutrino experiment

    Updated: 2012-04-04 21:00:36
    Neutrino physicists in the U.S. have begun to regroup after a disappointing setback last week, when they learned the Department of Energy would not support the budget of a major proposed experiment. The silver lining, as they see it, is that they have the chance to reevaluate their plans and find a path forward. DOE [...]

  • Korean experiment confirms groundbreaking neutrino measurement

    Updated: 2012-04-04 18:33:24
    Hot on the heels of the Daya Bay experiment's completion of one of the most difficult measurements in neutrino physics, a Korean experiment has produced its own measurement confirming the earlier results.

  • Quantum man: Richard Feynman's life in science

    Updated: 2012-04-04 11:15:52
    View on demand: an online lecture presented by Lawrence M Krauss

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