THE WHATIS.COM WORD-OF-THE-DAY August 7, 2003 dark energy
________________ SPONSORED BY: Microsoft The Quick Guide to Windows Server 2003. Get the latest information on installation, new features and training. Click here! http://WhatIs.com/r/0,,16822,00.htm?microsoft ________________ TODAY'S WORD: dark energy See our complete definition with hyperlinks at http://whatis.techtarget.com/definition/0,,sid9_gci917929,00.html Dark energy, also called quintessence, is a mysterious energy or force that has been postulated by astronomers and cosmologists to explain recent observations suggesting that the universe is expanding at an ever-increasing rate of speed. Dark energy affects the behavior of photons (light particles) as they travel through space. An exact definition of dark energy has eluded scientists. One description is that it is like gravity, but is repulsive (outward-pushing) rather than attractive (inward-pulling), and operates over a much larger scale than conventional gravity. The existence of dark energy is inferred from the apparent acceleration in the universe's expansion, and also from observed irregularities in the cosmic background radiation left over from the Big Bang. The term Big Bang refers to a gigantic explosion that took place approximately 12 billion years ago, in which all the matter and energy in the known universe emanated from a single point or tiny primordial particle. ______________________ RELATED TERMS: energy http://whatis.techtarget.com/definition/0,,sid9_gci213564,00.html photon http://whatis.techtarget.com/definition/0,,sid9_gci214455,00.html ______________________ SELECTED LINKS: Some scientists believe they have found direct evidence for the existence of dark energy. http://www.nature.com/nsu/030721/030721-5.html Scientists at the Lawrence Berkeley National Laboratory have written an online brochure about modern cosmology. http://snap.lbl.gov/brochure/foreword.html ______________________ TODAY'S TECH NEWS: LINUXWORLD: RED HAT PADS FUND TO FIGHT SCO, FILES COMPLAINT Red Hat kicked LinuxWorld off with a bang when it announced it has filed a complaint in federal court against SCO Group for its "unfair and deceptive" actions. Also, it pledged $1 million for a fund intended to help the open-source community fight any legal action by the SCO Group, which revealed licensing fees Linux users could pay SCO for System V as a way of avoiding legal action. http://searchenterpriselinux.techtarget.com/originalContent/0,289142,sid39_gci917777,00.html LINUXWORLD: SUN COMMITS TO OPEN SOURCE DESKTOP, NEW ALLIANCES Sun Microsystems had a busy day at LinuxWorld on Tuesday, announcing a new open-source desktop, Java 3D technologies and new partnerships. http://searchenterpriselinux.techtarget.com/originalContent/0,289142,sid39_gci917843,00.html LINUXWORLD: KERNEL CHANGES SPICE UP NEXT-GEN TECHNOLOGIES An IBM executive looks into his crystal ball and shares his predictions on how the 2.6.0 kernel, grid computing and virtualization will affect next-generation technologies. http://searchenterpriselinux.techtarget.com/originalContent/0,289142,sid39_gci917782,00.html >> Catch up on all the latest IT news at http://searchtechtarget.techtarget.com/ ______________________ Information Kit | Linux, Unix, and all the little ixes Get up to speed quickly, and be the Linux/Unix Know-IT-All at your office. http://whatis.techtarget.com/definition/0,,sid9_gci915803,00.html ______________________ Secret Word-of-the-Day | What is it? HINT: This is the Linux penguin's name. >> Think you know the Secret Word of the Day? See if you're right! http://whatis.techtarget.com/definition/0,,sid9_gci513154,00.html _____________________ Quiz #5 | General IT terms Do you know how the Internet works? Take this week's quiz and find out! >> Click to take the quiz http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci553879,00.html ______________________________ RECENT ADDITIONS AND UPDATES [1] segment http://searchdatabase.techtarget.com/sDefinition/0,,sid13_gci916820,00.html [2] block http://searchdatabase.techtarget.com/sDefinition/0,,sid13_gci916318,00.html [3] bias http://whatis.techtarget.com/definition/0,,sid9_gci914376,00.html [4] cache cramming http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci914394,00.html [5] initial extent http://searchdatabase.techtarget.com/sDefinition/0,,sid13_gci916333,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Associate Editor ([EMAIL PROTECTED]) ::::::::::::::::::::: ABOUT THIS NEWSLETTER :::::::::::::::::::::: This newsletter is published by TechTarget, the most targeted IT media. http://www.techtarget.com Copyright 2003 TechTarget. 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