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String Theorists Squeeze Nine Dimensions Into Three A simulation of the early universe using string theory may explain why space has three observable spatial dimensions instead of nine. The leading mathematical explanation of physics goes beyond modern particle theory by positing tiny bits of vibrating string as the fundamental basis of matter and forces. String theory also requires that the universe have six or more spatial dimensions in addition to the ones observed in everyday life. Explaining how those extra dimensions are hidden is a central challenge for string theorists. “This new paper demonstrates, for the first time, that our 3-D space appears naturally … from the 9-D space that string theory originally has,” says Jun Nishimura of the High Energy Accelerator Research Organization in Tsukuba, Japan. He and his colleagues will publish their findings in an upcoming issue of Physical Review Letters.
Quantum decision affects results of measurements taken earlier in time Quantum entanglement is a state where two particles have correlated properties: when you make a measurement on one, it constrains the outcome of the measurement on the second, even if the two particles are widely separated. It's also possible to entangle more than two particles, and even to spread out the entanglements over time, so that a system that was only partly entangled at the start is made fully entangled later on. This sequential process goes under the clunky name of "delayed-choice entanglement swapping." And, as described in a Nature Physics article by Xiao-song Ma et al., it has a rather counterintuitive consequence. You can take a measurement before the final entanglement takes place, but the measurement's results depend on whether or not you subsequently perform the entanglement.
How to be Productive and Still Get 8 Hours Sleep Yes, you read that right. Productive people sleep eight hours a day. They also watch tv, go to wine tastings and perform sun salutations in the morning. Productive people don’t have more hours in the day. Chapter 3 Classical physics could not explain the spectra of black bodies. It predicted that the intensity (power emitted at a given wavelength) of emitted light should increase rapidly with decreasing wavelength without limit (the "ultraviolet catastrophe"). In the figure below, the curve labeled "Rayleigh-Jeans law" shows the classically expected behavior. However, the measured spectra actually showed an intensity maximum at a particular wavelength, while the intensity decreased at wavelengths both above and below the maximum. In order to explain the spectra, in 1900 the German physicist Max Planck (1858 - 1947) was forced to make a desperate assumption for which he had no physical explanation.
Myth, Legend, Folklore, Ghosts Apollo and the Greek Muses Updated July 2010 COMPREHENSIVE SITES ON MYTHOLOGY ***** The Encyclopedia Mythica - SEARCH - Areas - Image Gallery - Genealogy tables - Mythic Heroes Probert Encyclopaedia - Mythology Gods, Heroes, and MythDictionary of Mythology What is Myth? MESOPOTAMIAN MYTHOLOGYThe Assyro-Babylonian Mythology FAQ Sumerian Mythology FAQ Sumerian Mythology Sumerian Gods and Goddesses Sumerian Myths SUMERIAN RELIGION Mythology's Mythinglinks: the Tigris-Euphrates Region of the Ancient Near East Gods, Goddesses, Demons and Monsters of Mesopotamia The Assyro-Babylonian Mythology FAQ More info on Ancient Mesopotamia can be found on my Ancient River Valley Civilizations page.
Math, Physics, and Engineering Applets Oscillations and Waves Acoustics Signal Processing Electricity and Magnetism: Statics Electrodynamics Not-quite-so elementary, my dear electron Electrons in atoms behave like waves, and when researchers excite them to higher orbits, those waves can split up, revealing the constituent characteristics of the electron. In a feat of technical mastery, condensed-matter physicists have managed to detect the elusive third constituent of an electron — its 'orbiton'. The achievement could help to resolve a long-standing mystery about the origin of high-temperature superconductivity, and aid in the construction of quantum computers. Isolated electrons cannot be split into smaller components, earning them the designation of a fundamental particle. But in the 1980s, physicists predicted that electrons in a one-dimensional chain of atoms could be split into three quasiparticles: a ‘holon’ carrying the electron’s charge, a ‘spinon’ carrying its spin (an intrinsic quantum property related to magnetism) and an ‘orbiton’ carrying its orbital location1.
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How Time Dilation Makes Sense previous home next PDF Michael Fowler, UVa Physics, 12/1/07 “Moving Clocks Run Slow” plus “Moving Clocks Lose Synchronization” plus “Length Contraction” leads to consistency! Kaleidocsope Painter Click this button to download the painting into your computer as a standard image (png) file. The file can then be opened in an image editing program such as Paint or Adobe Photoshop. (If you can't open the file, please append ".png" to the filename.) If this feature doesn't work for you, please make sure that you're using the latest browser (Chrome, Firefox, Internet Explorer or Safari). Physics Flash Animations We have been increasingly using Flash animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from The categories are: In addition, I have prepared a small tutorial in using Flash to do Physics animations.
Einstein for Everyone Einstein for Everyone Nullarbor Press 2007revisions 2008, 2010, 2011, 2012, 2013 Copyright 2007, 2008, 2010, 2011, 2012, 2013 John D. Norton Published by Nullarbor Press, 500 Fifth Avenue, Pittsburgh, Pennsylvania 15260 with offices in Liberty Ave., Pittsburgh, Pennsylvania, 15222 All Rights Reserved Best Hindi Websites Hindi language teacher hints, advice and tips: I know from my own experience that being on a continual path of self-improvement is an absolute necessity toward be a good teacher. Hang out with other educators that you admire. altvw96 "The Alternate View" columns of John G. Cramer by John G. Cramer At the end of 1998 my wife, daughter, and I attended the Renaissance Weekend at Hilton Head Island, South Carolina.