background preloader

Physics

Facebook Twitter

[1309.4474] Mass, Speed, Direction: John Buridan's 14th century concept of momentum. Why does particle physics matter? Watch a compilation of many scientists' explanations of the importance of particle physics.

Why does particle physics matter?

Editor's note: The "why particle physics matters" contest ended at 5pm Central on Sept. 3. Thanks to everyone who voted! Symmetry will announce the winner on Tuesday, Sept. 10. As you await the results, we encourage you to check out all the explanations on symmetry's YouTube channel. If you’ve voted for one of the five scientists whose explanations made it into symmetry’s “Why particle physics matters” contest, you’ll know that particle physics benefits humanity by seeking answers to big questions about where we come from and where we’re going. You’ll know that equipping young people with the knowledge and skills that come with a degree in particle physics benefits many parts of society, and you'll know that technology developed for particle physics research can be applied in other areas of life.

Illustration by Sandbox Studio, Chicago. Rare particle decay is bad news for exotic physics - physics-math - 19 July 2013. (Image: CERN) The two red lines seen emerging from the smoosh of particles above may look like the highly sensitive antenna of a strange organism, but they are actually the distinctive calling card of an incredibly rare particle transformation.

Rare particle decay is bad news for exotic physics - physics-math - 19 July 2013

Physicists who work on the Large Hadron Collider at CERN, near Geneva, Switzerland, today confirmed that they had seen a particle called a Bs meson decaying into two muons. The latter are represented by the red lines above. A signal that looked like this rare decay was glimpsed for the first time last year. On that occasion there were hints that around 1 in every 300 million Bs mesons decays this way, matching the predictions laid out in the standard model of particle physics, our leading theory of particles and forces.

Now the LHCb and CMS detectors at CERN have seen more decays and are able to confirm that this is the rate of decay of a Bs meson. More From New Scientist Star next door may host a 'superhabitable' world (New Scientist) Recommended by. Phys. Rev. ST Phys. Educ. Res. 9, 010115 (2013): Female physicist doctoral experiences. The underrepresentation of women in physics doctorate programs and in tenured academic positions indicates a need to evaluate what may influence their career choice and persistence.

Phys. Rev. ST Phys. Educ. Res. 9, 010115 (2013): Female physicist doctoral experiences

This qualitative paper examines eleven females in physics doctoral programs and professional science positions in order to provide a more thorough understanding of why and how women make career choices based on aspects both inside and outside of school and their subsequent interaction. Richard Phillips Feynman - The Last Journey Of A Genius. Press Releases - NOW AVAILABLE: PHYSICS PUZZLE GAME 'MR. PIG MUDDY' [This unedited press release is made available courtesy of Gamasutra and its partnership with notable game PR-related resource GamesPress.] For Immediate Release Amsterdam, The Netherlands - December 18, 2012 - Dutch video game publisher, Keesing Games announced today that physics puzzle game Mr. Pig Muddy ( is now available on iOS and Android.

Developed by Gamious, Mr. Pig Muddy features 130 levels of progressively difficult gameplay, offering hours of physics puzzle action that will challenge even the most adept puzzler. Watch Mr. iTunes link: Google play Link : Daan Boekestein from Keesing Games adds: " Mr. Quarks and gluons with an unsung hero: Professor Graham Ross. First Muslim Nobel Prize Winner Dr. Abdus Salam.flv. Quantum Theory: von Neumann vs. Dirac. First published Tue Jul 27, 2004; substantive revision Mon May 21, 2012 An ongoing debate in the foundations of physics concerns the role of mathematical rigor in theorizing.

Quantum Theory: von Neumann vs. Dirac

The contrasting views of von Neumann and Dirac provide interesting and informative insights concerning two sides of this debate. Von Neumann's contributions often emphasize mathematical rigor and Dirac's contributions emphasize pragmatic concerns. The discussion below begins with an assessment of their contributions to the foundations of quantum mechanics. Their contributions to mathematical physics beyond quantum mechanics are then considered, and the focus will be on the influence that these contributions had on subsequent developments in quantum theorizing, particularly with regards to quantum field theory and its foundations. Broadcast Yourself. TABLE 3.4. Welcome. Today, december 20th, 2011, marks the 802th day (more than two years!)

Welcome

Of "provisional detention" of our colleague Adlène Hicheur. He has been incarcerated without formal charge in Fresnes prison for more than 2 years under suspicion of having visited subversive websites. No material evidence has come to light to justify this treatment which is in flagrant contravention of the letter and spirit of European Convention of Human Rights (ECHR). See also the editorial published this week in "Nature".

Join the support network, and denounce this scandalous situation, which dishonours France. French anti-terrorism magistrates abuse their powers and take advantage of the presumption that they conduct their investigations in an evenhanded, truth-seeking manner -- when in fact they behave more like a prosecutor in an adversarial legal system. In june Adlene hired a new lawyer, maitre Patrick Baudoin, who is also honorary president of FIDH (International Dederation for Human Rights) . Zero Gravity: The Lighter Side of Science. TEDxCaltech. The Physics Classroom. Physics.