• Sum of three cosines equals 1

    Updated: 2012-02-29 17:10:35
    Hi there, I'm trying to figure out how the sum of three cosines exposed in page 2 of: http://www.mrl.ucsb.edu/~seshadri/2004_100A/100A_MillerBragg.pdf can be proved... Any help would be...

  • Is there an equation to prove the Zeroth law of thermodynamics?

    Updated: 2012-02-29 16:59:08
    Is there a formula/equation that proves the Zeroth law, that can be confirmed by experiments? And another quick question. If I bunch together three temperatures (all water, of the same volume)....

  • 3D Chart Axes Angles

    Updated: 2012-02-29 16:47:54
    Yes, that is my problem. I could never reproduce in computer the scheme I learned in Computer Engineering graduation I am coursing. The way the teachers show and in some books, I never get into that...

  • Magnetic strength over distance

    Updated: 2012-02-29 16:24:11
    I am working on an engineering project in which I am mounting an electromagnet onto a small RC robot. The link for the electromagnet is here...

  • Why can't an electron have a even lower energy level in atom?

    Updated: 2012-02-29 16:24:11
    Why can't an electron have a even lower energy level in atom and be closer to the nuclei? (as the next step is to fuse with one of the protons and make neutron.. )

  • Control - State-Space and Transfer Function

    Updated: 2012-02-29 16:22:40
    *1. The problem statement, all variables and given/known data* Image: http://www.djmystic.com.mt/bucket/control/question.jpg *2. Relevant equations* Image:...

  • Our Early Universe: Inflation, or Something Totally Wacky?

    Updated: 2012-02-28 21:04:18
    Astronomers generally accept the theory that our universe looks the way it does because of cosmic inflation — rapid expansion in the moments after its birth. This explains the expanse and apparent flat shape of the universe observed through instruments like NASA’s Wilkinson Microwave Anisotropy Probe. But inflation isn’t the only model that explains the [...]

  • The Science of Sports

    Updated: 2012-02-28 08:00:52
    This year will be the 2012 Summer Olympics. While this is rightly a celebration of physical excellence, sports of these types also allow an opportunity to enhance our minds. Sports are about the sophisticated application of force to achieve a desired outcome ... which means that provide an inherently interesting environment for studying applied physics....Read Full Post

  • Relativity and Gravitation – 100 Years after Einstein in Prague (3rd circ.)

    Updated: 2012-02-27 15:46:58
    The conference is organized at the occasion of the 100th anniversary of Albert Einstein’s stay in Prague, with the aim of providing an overview of the development and progress achieved in general relativity and its applications since then. The main topics of the conference include: - Mathematical relativity - Numerical relativity - Relativistic astrophysics - Relativistic cosmology - Quantum gravity - Gravitation [...]

  • Living Reviews in Relativity: “Brane Effective Actions, Kappa-Symmetry and Applications”

    Updated: 2012-02-27 15:03:37
    Living Reviews in Relativity has published a new review article on “Brane Effective Actions, Kappa-Symmetry and Applications” by Joan Simón on 27 February 2012. Please find the abstract and further details below. —————— PUB.NO. lrr-2012-3 Simón, Joan “Brane Effective Actions, Kappa-Symmetry and Applications” ACCEPTED: 2012-01-09 PUBLISHED: 2012-02-27 FULL ARTICLE AT: http://www.livingreviews.org/lrr-2012-3 ABSTRACT: This is a review on brane effective actions, their symmetries and some of its [...]

  • Webcast: Combining science disciplines for modern cancer treatment

    Updated: 2012-02-27 11:51:53
    A webcast of the public lecture “Treating cancer in the XXI century: biology, physics and genomics,” will be available at webcast.cern.ch today at 12:30 p.m. EST.

  • Book Review: Krauss' A Universe From Nothing

    Updated: 2012-02-24 06:00:29
    One of the biggest questions in science has always been how the universe formed. Over the last century, we've made a lot of progress about understanding the way it has developed: The Big Bang Model. With the most sophisticated telescopes ever built, scientists have now made measurements confirming the accuracy of this model within just moments of when the universe began....Read Full Post

  • February Big Bang Episodes

    Updated: 2012-02-23 22:15:14
    The last few weeks have had some hilarious episodes of CBS' The Big Bang Theory. They haven't all necessarily had a strong physics focus, but sometimes you can still have good television even without physics. (Amazing, I know, but it seems to be true!)...Read Full Post

  • World’s best measurement of W boson mass tests Standard Model, Higgs boson limits

    Updated: 2012-02-23 20:00:03
    Today, scientists from the CDF collaboration have unveiled the world's most precise measurement of the W boson mass, based on data gathered at the Tevatron accelerator. The precision of this measurement surpasses all previous measurements combined and restricts the space in which the Higgs particle should reside according to the Standard Model, the theoretical framework that describes all known subatomic particles and forces.

  • Faster-than-light neutrinos explained?

    Updated: 2012-02-23 18:54:39
    Albert Einstein's law of special relativity might shrug off the challenge of faster-than-light neutrinos after all. Scientists in the OPERA collaboration announced today that they have found two possible causes for the surprising results they presented in September 2011, in which neutrinos seemed to beat Einstein's cosmic speed limit.

  • Advanced School in General Relativity in Sao Paolo: Relativistic Astrophysics and Cosmology

    Updated: 2012-02-22 11:26:32
    16 – 27 July, 2012 Instituto de Fisica Teorica – UNESP – Sao Paulo, Brazil Modern technology is improving our observations of neutron stars, pulsars, black holes, and other compact objects, which only can be understood in the context of general relativity. Moreover, the direct observation of gravitational waves, expected in the next years, should dramatically increase our [...]

  • String Theory Skeptics and Multiverse Mania

    Updated: 2012-02-21 22:08:12
    My endless rants here about the hot field of multiverse studies are mainly motivated by concern about the effect this is having on particle theory. Multiverse scenarios all too often function as an excuse for not admitting that string theory/extra-dimensional … Continue reading →

  • 14th Canadian Conference on General Relativity and Relativistic Astrophysics (2nd circ.)

    Updated: 2012-02-21 11:11:26
    This is the second announcement for the the 14th Canadian Conference on General Relativity and Relativistic Astrophysics which will take place July 9-12, 2012 in St. John’s, Newfoundland. CCGRRA14 is the latest in a biennial series of meetings that bring together Canadian and international relativists for scientific discussion and exchange. These meetings are broadly based, [...]

  • February 2012 issue of symmetry available

    Updated: 2012-02-16 19:09:44
    Our February issue runs the gamut from the proud 30-year-legacy of the Tevatron Collider to the latest popular physics sensation: faster-than-light neutrinos.

  • Quantum man: Richard Feynman's life in science

    Updated: 2012-02-16 16:15:52
    Register now: Tuesday 6 March 2012 An online lecture presented by Lawrence M Krauss

  • Tomorrow: Live underground tour of the CMS detector on Google+

    Updated: 2012-02-14 10:16:32
    You're invited to tour an underground cavern that holds one of the largest scientific experiments in the world. Tomorrow, Feb. 15, the head of the CMS experiment at the Large Hadron Collider, physicist Joe Incandela, will chat live from the CMS detector 100 meters underground in France via a Google+ Hangout.

  • Why Physics Students Need Philosophy Too

    Updated: 2012-02-13 21:30:00
    : skip to main skip to sidebar Monday , February 13, 2012 Why Physics Students Need Philosophy Too Quantum Mechanics is notoriously difficult , and the subject has raised some deep questions about the natural world . Perhaps the best known example is the Schrodinger's cat thought experiment that poses the following question : does quantum mechanics imply that a cat can be both dead and alive at the same time Physics education researchers have found that professors often glance over or sidestep fundamental questions like this , and it's hindering students' understanding . Touching on these interpretive questions not only makes students more excited about physics , but it also leads to a better understanding of the underlying physics . principles Schrodinger's cat is placed in a box with a

  • CERN plans for even more intense year of LHC physics

    Updated: 2012-02-13 15:40:11
    CERN scientists will begin running the Large Hadron Collider at a higher energy than ever before when this winter’s technical stop comes to a close in mid-March, the laboratory announced in a press release today.

  • Latest from the LHC

    Updated: 2012-02-07 15:15:35
    CMS and ATLAS have just released final versions of their Higgs analyses for the 2011 data (the new CMS gamma-gamma analysis was previously discussed here). The preliminary versions of these were what was released last December, and the final versions … Continue reading →

  • Reader challenge: My physical romance

    Updated: 2012-02-07 11:00:12
    Before next week’s holiday, we at Symmetry Breaking want to know about your affair with physics. Send us a love letter (or “Dear John” letter) about your research, a playful pun about a physical concept, or a story about a connection you’ve made with a fellow scientist. Post your comments here or send them to scharley@fnal.gov. We will publish our favorites on Feb. 14.

  • The Langlands Program and Quantum Field Theory

    Updated: 2012-02-02 01:59:53
    Edward Frenkel is here this semester in the math department at Columbia, and he’s giving a series of lectures on a topic dear to my heart. Video of his lectures on The Langlands Program and Quantum Field Theory is starting … Continue reading →

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