• Big Ban Skeptic

    Updated: 2012-05-21 04:37:38
    as alternative to the big bang, lets construct an arc from the farthest points of the discernible universe such that the universe now has the appearance of a ring, like those Saturn. Now all parts...

  • A very simple question concerning the algebra of physics

    Updated: 2012-05-21 04:13:27
    *1. The problem statement, all variables and given/known data* *2. Relevant equations* *3. The attempt at a solution*

  • Multiverse (Many Worlds)

    Updated: 2012-05-21 03:59:47
    *1. The problem statement, all variables and given/known data* This is personal homework. I am not a physics student but if anyone could solve this problem it would be appreciated as I am writing...

  • Factoring known drag into finding height of projectile

    Updated: 2012-05-21 03:41:13
    Alright, I am trying to work out some equations on a project to determine if fictional instances of physics are possible or not. In my case, I am seeing how a person travels if they are thrown from a...

  • Quation about term symbols: N atom

    Updated: 2012-05-21 03:08:20
    So the term symbol for the nitrogen atom is 4S3/2 This means L=0, S=3/2, hence J=3/2. My question is that if S=3/2 than this is a quartet, meaning there are four levels, yet I only ever see one...

  • Coverage Area Of Light Reflected Using A Convex Mirror

    Updated: 2012-05-21 02:29:16
    I have a real-world situation I need help with before I run out and spend money. I have a wall that is in the shadows. I want to use a convex mirror to reflect sunlight onto the wall, covering as...

  • Evaluate line integral

    Updated: 2012-05-21 02:29:02
    *1. The problem statement, all variables and given/known data* I have attached the problem to the post. *2. Relevant equations* Properties of line integral. Path independence. *3. The...

  • Minimum Distance between surface of sphere and cube

    Updated: 2012-05-21 02:23:17
    *1. The problem statement, all variables and given/known data* Find the minimum distance between the surface of a sphere with radius 3 with center (2,1,2) and a cube with length 6 with center...

  • Nonstandard Concave Mirror Optics, beyond the parabola.

    Updated: 2012-05-21 02:09:00
    Why is the parabola the most bent, concave, effective mirror? What are some properties of a third order mirror (absolute value of x^3)? There is no uniform focal point. Shouldn't shining a light...

  • Limit cycles in asymptotic safety?

    Updated: 2012-05-21 01:58:44
    Litim and Satz have just addressed a question I've long wondered (http://www.physicsforums.com/showpost.php?p=2458446&postcount=113) about. http://arxiv.org/abs/1205.4218 *Limit cycles and...

  • Big Bang Theory - Season 5 Round-Up

    Updated: 2012-05-18 15:15:36
    With the conclusion of season 5 of The Big Bang Theory, we've got our reviews of the last couple of episodes up on the site now, along with links to the science-related subjects that get mentioned in the course of the geek-related comedy....Read Full Post

  • Scientists celebrate completion of underground physics laboratory

    Updated: 2012-05-17 14:00:18
    The elevator that sinks into the Vale Creighton Mine near Sudbury, Ontario, is a gateway to two different worlds. One is Canada’s largest nickel mine, opened at the turn of the last century and still in operation. The other is SNOLAB, a large underground particle physics laboratory, the grand opening of which will take place today.

  • Gravity Research Foundation, Awards for the Essays 2012

    Updated: 2012-05-16 16:47:15
    GRAVITY RESEARCH FOUNDATION PO BOX 81389 WELLESLEY HILLS MA 02481-0004 USA Roger W. Babson, Founder George M. Rideout, Jr., President The trustees are pleased to announce the Awards for Essays for 2012. 1. $4,000 – Can Effects of Quantum Gravity Be Observed in the Cosmic Microwave Background? by Claus Kiefer and Manuel Kraemer, Institute for Theoretical Physics, University of Cologne, Zuelpicher [...]

  • Postdoc in gravitational physics at the University of Vienna

    Updated: 2012-05-16 10:59:13
    The Gravitational Physics group of the Department of Physics of University of Vienna (see http://gravity.univie.ac.at/) is seeking to fill a post-doctoral position (Universitaetsassistent/in) in the field of mathematical general relativity and/or numerical general relativity; in the latter case candidates with strong interest in rigorous aspects of numerical analysis will be sought. The appointment will be [...]

  • Researchers developing underwater neutrino experiment make oceanographic discovery

    Updated: 2012-05-15 22:45:53
    Researchers deciding where to place the planned Neutrino Mediterranean Observatory, or NEMO, were measuring water currents and temperatures when they stumbled upon unexpected patterns in the water.

  • 2012 IOP Gravitational Physics Group Thesis Prize (sponsored by CQG)

    Updated: 2012-05-14 16:24:28
    The 2012 Institute of Physics Gravitational Physics Group Thesis Prize, sponsored by Classical and Quantum Gravity (CQG), will be made for excellence in postgraduate research and communication skills in gravitational physics. All members of the IOP Gravitational Physics Group who passed their PhD viva voce exam between 30 September 2010 and 31 December 2012 are [...]

  • Vacuum Energy and Virtual Particles

    Updated: 2012-05-14 07:36:40
    Education Physics Search Physics Basic Concepts Theories Experiments Share Free Physics Newsletter Sign Up Discuss in my forum Vacuum Energy and Virtual Particles By Andrew Zimmerman Jones About.com Guide May 14, 2012 My Bio Headlines Forum RSS Follow me : on Facebook Twitter One of the weirdest facts about quantum physics is that particles are constantly springing into and out of existence all around us . Even within empty space , which seems like it should contain no energy at all , there are virtual particle pairs that manifest for a moment before annihilating each . other This means that energy is contained even in the empty vacuum of space itself , a fact which yields all sort of strange behavior . This vacuum energy may explain the dark energy that cosmologists observe , but the

  • 2012 VESF fellowships for theoretical research on Gravitational Wave Detection

    Updated: 2012-05-13 20:58:40
    2012 Call for VESF Fellowships for theoretical research on Gravitational Wave Detection The Virgo EGO Scientific Forum (VESF) is glad to announce the following call for fellowship applications to work on theoretical research relevant to the physics of the Virgo experiment. Mostly contemplated topics will be: potentially detectable gravitational wave sources, emitted waveforms, rates, data analysis [...]

  • John Miller awarded 2011 IOP Gravitational Physics Group thesis prize co-sponsored by CQG

    Updated: 2012-05-11 09:31:43
    I am delighted to announce that the 2011 IOP Gravitational Physics Group’s thesis prize, co-sponsored by Classical and Quantum Gravity, has been awarded to Dr John Miller, currently at Australian National University (ANU), for his excellent work on non-Gaussian beams and optomechanical parametric instabilities in gravitational wave detectors and their impact on designing future gravitational [...]

  • New accelerator to study steps on the path to fusion

    Updated: 2012-05-09 15:30:27
    Berkeley Lab scientists and engineers announced in a press release today that they have completed a machine tailor-made to examine an approach to fusion power.

  • Fermilab scientists revise plans for construction of new accelerator project

    Updated: 2012-05-07 22:16:21
    With their eyes on the tight federal budget, scientists plan to divide Project X, the accelerator project that will power Fermilab's future experiments, into phases in order to lessen the initial costs.

  • May 2012 issue of symmetry available

    Updated: 2012-05-01 21:07:04
    We’ve done it again. The May issue of symmetry is now available online.

  • Black Holes, Gravitational Waves and Cosmology

    Updated: 2012-04-30 22:17:30
    This is a meeting in celebration of the 70th birthday of Remo Ruffini on the 40th anniversary of the book “Black Holes, Gravitational Waves and Cosmology” by Martin Rees, Remo Ruffini and John Archibald Wheeler. Many of us began our research as students working with Remo, who has had an important influence on the direction of [...]

  • 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 [...]

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