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Faddeev-Popov ghost
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In physics, Faddeev-Popov ghosts (also called ghost fields) are additional fields which are introduced into gauge quantum field theories to maintain the consistency of the path integral formulation. They are named after Ludvig Faddeev and Victor Popov. Every gauge field has an associated ghos...
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Inertia
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Inertia is the resistance of any physical object to a change in its state of motion or rest, or the tendency of an object to resist any change in its motion. The principle of inertia is one of the fundamental principles of classical physics which are used to describe the motion of matter and how it is affe...
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Ultraviolet Light
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Ultraviolet Light: At the End of the Rainbow - 1946 Educational Documentary Educational documentary sponsored by the Sun-Kraft Corporation that explains the history, physics and health-giving properties of ultra violet light. Being...
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Microwave oscillators
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UCLA-led research team develops world's most powerful nanoscale microwave oscillators A team of UCLA researchers has created the most powerful high-performance nanoscale microwave oscillators in the world, a development that could lead to cheaper, more energy-efficient mobile communica...
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Strange B Meson
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The Strange B meson is a meson composed of a bottom antiquark and a strange quark. Its antiparticle is the B s meson, composed of a bottom quark and a strange antiquark. Strange B mesons are noted for their ability to oscillate between matter and antimatter via a box-diagram with Delta ms = 17.77 ± 0.10 (...
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Embedded Lenses
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Title: Image Properties of Embedded Lenses Authors: Ronald Kantowski, Bin Chen, Xinyu Dai We give analytic expressions for image properties of objects seen around point mass lenses embedded in a flat \Lambda CDM universe. An embedded lens in an otherwise homogeneous universe offers a more reali...
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Planck length
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Title: Can we measure structures to a precision better than the Planck length? Authors: Sabine Hossenfelder It was recently claimed that the Planck length is not a limit to the precision by which we can measure distances, but that instead it is merely the Planck volume that limits the precision by wh...
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Gaussian distribution
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Why is the bell curve so ubiquitous? Known to statisticians as the Gaussian or Normal distribution, the bell curve is routinely used to describe everything from the outcome of dice rolls to the weights, heights and IQs of randomly selected groups of people. [url=http://sciencefocus.com/qa/wh...
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XENON10 detector
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Title: A search for light dark matter in XENON10 data Authors: J. Angle, E. Aprile, F. Arneodo, L. Baudis, A. Bernstein, A. Bolozdynya, P. Brusov, L.C.C. Coelho, C.E. Dahl, L. DeViveiros, A.D. Ferella, L.M.P. Fernandes, S. Fiorucci, R.J. Gaitskell, K.L. Giboni, R. Gomez, R. Hasty, L. Kastens, J. K...
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OPERA neutrino experiment
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Title: Measurement of the neutrino velocity with the OPERA detector in the CNGS beam Authors: OPERA The OPERA neutrino experiment at the underground Gran Sasso Laboratory has measured the velocity of neutrinos from the CERN CNGS beam over a baseline of about 730 km with much higher accuracy than pr...
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Dimensions
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In everyday life the number of dimensions refers to the minimum number of measurements required to specify the position of an object, such as latitude, longitude and altitude. Implicit in this definition is that space is smooth and obeys the laws of classical physics. But what if space is not so well...
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Principle of equivalence
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Not every physicist has to wear a hard hat to work. But when Stanford University physics professor Mark Kasevich and two of his graduate students, Jason Hogan and David Johnson, descend into the 25-foot pit containing their experiment, they take the necessary precautions. Located in the basement...
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Neutrinoless double beta decay
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Physicists Close in on a Rare Particle-Decay Process In the biggest result of its kind in more than ten years, physicists have made the most sensitive measurements yet in a decades-long hunt for a hypothetical and rare process involving the radioactive decay of atomic nuclei. If discovered, the r...
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Element 114
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Six New Isotopes of the Superheavy Elements Discovered A team of scientists at the U.S. Department of Energy's Lawrence Berkeley National Laboratory has detected six isotopes, never seen before, of the superheavy elements 104 through 114. Starting with the creation of a new isotope of the yet-to...
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Livermorium
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Element 116, livermorium, was first made in Dubna, Russia in July 2000. The work was a collaboration between science teams at the Joint Institute for Nuclear Research in Dubna and the Lawrence Livermore National Laboratory in California led by Yuri Oganessian and Ken Moody. [url=http://www.che...
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