Physics

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By John Matson Hot on the heels of detecting the two highest-energy neutrinos ever observed, scientists working with a mammoth particle detector buried in ice near the South Pole unveiled preliminary data showing that they also registered the signal of 26 additional high-energy neutrinos. The newfound neutrinos are somewhat less energetic than the two record-setters but nonetheless appear to carry more energy than would be expected if created by cosmic rays hitting the atmosphere—a prodigious source of neutrinos raining down on Earth. The particles thus may point to unknown energetic astrophysical processes deeper in the cosmos . “The result right now is very preliminary,” cautions Nathan Whitehorn of the University of Wisconsin–Madison, who described the new data May 15 during a symposium in Madison on particle astrophysics. “We’re not totally certain right now that it’s from an astrophysical source.” IceCube Neutrino Observatory Detects Mysterious High-Energy Particles IceCube Neutrino Observatory Detects Mysterious High-Energy Particles
Dark matter experiment CDMS sees three tentative clues 15 April 2013Last updated at 16:08 ET By Jason Palmer Science and technology reporter, BBC News, Denver, Colorado The CDMS experiment is based underground at the Soudan mine in Minnesota, US Researchers have revealed the first potential hints of the elusive material called dark matter at an underground laboratory in the US. Though it is believed to make up a quarter of our Universe, dark matter - true to its name - has never been seen. Scientists at the American Physical Society meeting showed three promising clues to it from the CDMS experiment. However, they stressed the preliminary nature of the results and that more data are needed to confirm it. Dark matter experiment CDMS sees three tentative clues
New measurements have been released by the LHCb collaboration on the search for matter anti-matter differences (CP violation) in particles containing charm quarks. A previous LHCb measurement gave a first hint of CP violation differences in the charm sector. This was further strengthened by results from two other experiments (CDF in the USA, and Belle in Japan). PHYSICS HIGHLIGHTS - PLAIN ENGLISH SUMMARIES PHYSICS HIGHLIGHTS - PLAIN ENGLISH SUMMARIES
BOSTON — Big news in the search for dark matter may be coming in about two weeks, the leader of a space-based particle physics experiment said today (Feb. 17) here at the annual meeting of the American Association for the Advancement of Science. That's when the first paper of results from the Alpha Magnetic Spectrometer, a particle collector mounted on the outside of the International Space Station, will be submitted to a scientific journal, said MIT physicist Samuel Ting, AMS principal investigator. Though Ting was coy about just what, exactly, the experiment has found, he said the results bear on the mystery of dark matter, the invisible stuff thought to outnumber regular matter in the universe by a factor of about six to one. "It will not be a minor paper," Ting said, hinting that the findings were important enough that the scientists rewrote the paper 30 times before they were satisfied with it. Has Dark Matter Finally Been Found? Big News Soon Has Dark Matter Finally Been Found? Big News Soon
Time: The entanglement of quantum physics
Who's Afraid of a Big Black Hole
A Capella Science - Rolling in the Higgs (Adele Parody)

Hans Bethe: Quantum Physics Made Relatively Simple

Three Lectures by Hans Bethe IN 1999, legendary theoretical physicist Hans Bethe delivered three lectures on quantum theory to his neighbors at the Kendal of Ithaca retirement community (near Cornell University). Given by Professor Bethe at age 93, the lectures are presented here as streaming videos synchronized with slides of his talking points and archival material. Intended for an audience of Professor Bethe's neighbors at Kendal, the lectures hold appeal for experts and non-experts alike. Hans Bethe: Quantum Physics Made Relatively Simple
Physics of the Impossible How to Become Invisible
Brian Cox's guide to quantum mechanics
Common Sense Quantum Physics | Togism - Together we are One
Pr. Brian Cox - A Night with the Stars [BBC, Full Lecture]
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MinutePhysics

"Beautiful" New Particle Found at LHC Known as Xi(b)* (pronounced "csai bee-star"), the new particle is a baryon, a type of matter made up of three even smaller pieces called quarks. Protons and neutrons, which make up the nuclei of atoms, are also baryons. (Related: "Proton Smaller Than Thought—May Rewrite Laws of Physics." ) The Xi(b)* particle belongs to the so-called beauty baryons, particles that all contain a bottom quark, also known as a beauty quark. The newfound particle had long been predicted by theory but had never been observed. Although finding Xi(b)* wasn't exactly a surprise, the discovery should help scientists solve the larger puzzle of how matter is formed. "Beautiful" New Particle Found at LHC
What Today's Higgs Boson Discovery Really Means

What Today's Higgs Boson Discovery Really Means

Earlier today, scientists from the ATLAS and CMS experiments at CERN's Large Hadron Collider announced the discovery of a subatomic particle that's consistent with the Higgs Boson. So, have physicists finally found the elusive particle? Short answer? Yes. Longer answer?
BBC Richard Hammonds Invisible Worlds S01E01 720p BluRay Full episode
BBC Richard Hammonds Invisible Worlds S01E02 720p BluRay
BBC Richard Hammonds Invisible Worlds S01E03 720p BluRay

Why do we believe in electrons, but not in fairies?

Why do we believe in electrons, but not in fairies? by Benjamin Kuipers No one has directly observed either electrons or fairies. Both of them are theoretical constructs, useful to explain observations that might be difficult to explain otherwise. The "theory of fairies" can actually explain more things than the "theory of electrons". So why do we believe in electrons, but not in fairies?
Physics

(Phys.org) -- Earlier this year, theoretical physicists Frank Wilczek, of MIT put forth an idea that intrigued the research community. He suggested that it should be possible to construct a so called space-time crystal by adding a fourth dimension, movement in time, to the structure of a crystal, causing it to become an infinitely running clock of sorts. At the time, Wilczek acknowledged that his ideas on how to do so were inelegant, to say the least. Now another international team led by Tongcang Li has proposed a way to achieve what Wilczek proposed using a far more elegant process. ics team proposes a way to create an actual space-time crystal ics team proposes a way to create an actual space-time crystal
Carl Sagan's Cosmos Welcome to YouTube! The location filter shows you popular videos from the selected country or region on lists like Most Viewed and in search results.To change your location filter, please use the links in the footer at the bottom of the page. Click "OK" to accept this setting, or click "Cancel" to set your location filter to "Worldwide".
For the Love of Physics (May 16, 2011)
Cassiopeia Project - Physics - Gravity And Branes