THE WHATIS.COM WORD-OF-THE-DAY February 6, 2003 11th dimension
______________ TODAY'S SPONSOR: ITT Technical Institute Upgrade your IT skills. Update your resume. Get $tarted with ITT. Thinking of a transition in your IT career? Need to update your IT training skills? Visit ITT Technical Institute and find out what others have already learned: ITT has the flexibility and depth in its technology programs you need to secure your future. You'll find rograms like software applications and programming, information security, Web development, computer networking, and more! To request a brochure or stop by an ITT campus near you, Click here. http://WhatIs.com/r/0,,10035,00.htm?itt-tech ______________ TODAY'S WORD: 11th dimension See our complete definition with hyperlinks at http://whatis.techtarget.com/definition/0,,sid9_gci878923,00.html The 11th dimension is a characteristic of space-time that has been proposed as a possible answer to questions that arise in superstring theory. The theory of superstrings involves the existence of nine dimensions of space and one dimension of time (a total of 10 dimensions). According to this notion, we observe only three spatial dimensions and one time dimension because the other six spatial dimensions are "curled up" or "compactified." According to superstring theory, all of the elementary particles in the universe are composed of vibrating, one-dimensional mathematical objects known as strings. The theory does not explicitly state what the strings are made of or where they come from; rather, they are proposed as geometric ideals. Each string has a length of only 10-35 meters, many times smaller than the diameter of the nucleus of an atom. Any given subatomic particle (or hadron) is made of a string that vibrates and rotates at the speed of light. A particular hadron gets its unique identity from the manner in which the string rotates and vibrates according to the dynamics of Einstein's theory of general relativity. The frequency of vibration corresponds to the mass of the particle. The nagging question remains, "Where do the strings come from?" Also, there are five different versions of superstring theory that explain the way subatomic particles behave. Are all five versions correct, or are some correct and others wrong? In an attempt to answer these questions, some physicists have suggested that there exists an 11th dimension, which is compactified like the other six spatial dimensions we do not directly observe. Superstring theory with the inclusion of the 11th dimension is sometimes called M theory or the theory of everything (TOE). RELATED TERMS: superstring theory http://whatis.techtarget.com/definition/0,,sid9_gci341514,00.html M theory http://whatis.techtarget.com/definition/0,,sid9_gci549055,00.html ______________________ SELECTED LINKS: Michio Kaku has written a paper entitled "Into the 11th Dimension." http://www.fortunecity.com/emachines/e11/86/dimens.html The Duke University Computer Science Department provides Carleton Kingsford's paper, "The Search for a Theory of Everything." http://www.cs.duke.edu/~clk/papers/phy49s/finalpaper.html ______________________ QUIZ #35 | Common Vulnerabilities Take our quiz to test your knowledge about common security vulnerabilities. Learn how to defend your organization against them with the resources we've collected. http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci875285,00.html ______________________ REAL LIFE CHALLENGE | Upgrade to Win2k server or wait for .NET? Ned is an IT manager in a Windows NT environment with a couple of hundred workstations and several servers. Ned's CEO wants him to determine whether it would be better for the company upgrade to a Windows 2000 server, or wait until the Windows .NET server (now called Microsoft Windows Server 2003) comes out. Can you advise? http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]@.1dcfae0e/211!viewtype=threadDate&skip=&expand= ______________________________ RECENT ADDITIONS AND UPDATES [1] EBITDA http://searchcio.techtarget.com/sDefinition/0,,sid19_gci877929,00.html [2] ABAP Objects http://searchsap.techtarget.com/sDefinition/0,,sid21_gci877494,00.html [3] Direct R/3 http://searchsap.techtarget.com/sDefinition/0,,sid21_gci877428,00.html [4] switch-on-a-chip http://searchstorage.techtarget.com/sDefinition/0,,sid5_gci877286,00.html [5] switch http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213079,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Associate Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Published by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2003, All Rights Reserved. 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