THE WHATIS.COM WORD-OF-THE-DAY June 11, 2002 speed of sound ______________ TODAY'S SPONSOR: The .tv Corporation
Save 30% on Web addresses! Not only will you get a great deal on your Web addresses, but you'll also get superior customer service, innovative products and services and a place that is easy to register and manage your Web addresses. Great names are still available. Register the names you want before someone else does! Check it out now: http://WhatIs.com/r/0,,3818,00.htmthe.tvcorporation ______________ TODAY'S WORD: speed of sound See our definition with hyperlinks at http://whatis.techtarget.com/definition/0,,sid9_gci832223,00.html The speed of sound, or of acoustic traveling waves, is a physical constant for any given medium at a specific pressure and temperature. In dry air at sea level at 0 degrees Celsius, the speed of sound is approximately 331.4 meters per second (m/s). Temperature, pressure, and humidity affect this value to some extent. In most liquids and solids, the speed of sound is greater than in air at sea level. In part, this is because traveling waves in air occur because of compression, but traveling waves in solids and liquids occur because of lateral motion of the molecules, a phenomenon that generally propagates faster. The higher speed of sound in liquids and solids, compared with gases, is also partly the result of the fact that liquids and solids are usually more dense than gases. Traveling-wave speed generally increases with increasing density and hardness of the medium. RELATED TERMS: Table of Physical Units http://whatis.techtarget.com/definition/0,,sid9_gci551931,00.html ______________________ SELECTED LINKS: The speed of sound in air can be calculated as a function of temperature. http://hyperphysics.phy-astr.gsu.edu/hbase/sound/souspe.html The speed of sound varies for other media. http://hyperphysics.phy-astr.gsu.edu/hbase/tables/soundv.html#c1 ______________________ WHATIS DISCUSSION FORUM | Challenge #2 THE SCENARIO: Company Beta held a meeting to inform employees that they would begin monitoring employee e-mail. Management says it's their duty to prevent improper use of e-mail. Employees are concerned that monitoring e-mail will change the culture of the company. Who's right? You be the judge! http://whatis.discussions.techtarget.com/WebX?[EMAIL PROTECTED]^5@.1dcf9e64/63!viewtype= ______________________ QUIZ #27 | Security awareness for end users Studies show that a company's biggest security threat is its own employees. The SANS Institute recommends that organizations should take time to educate their employees about computer security and periodically test employees to make sure they understand the basics. To help you in your efforts to raise security awareness in your organization, we've created the following quiz: http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci826572,00.html _________________________________________________________ LESS THAN 2 WEEKS UNTIL OUR FREE SECURITY DECISIONS EVENT Time's running out to attend Security Decisions June 19-21 at the Hilton Chicago Hotel. There are still seats left but you should act now or risk being shut out. FREE attendance available at: http://www.securityconf.com/html/registration.htm Benefit from top strategies to make the most cost-effective security purchases, expert tactics to close specific security holes in your system, and the most effective ways to manage network security (without breaking the bank). Apply today! ______________________________ RECENT ADDITIONS AND UPDATES [1] subset symbol http://whatis.techtarget.com/definition/0,,sid9_gci831748,00.html [2] gap analysis http://whatis.techtarget.com/definition/0,,sid9_gci831294,00.html [3] XSD http://searchwebservices.techtarget.com/sDefinition/0,,sid26_gci831325,00.html [4] PersonalJava http://searchsolaris.techtarget.com/sDefinition/0,,sid12_gci831420,00.html [5] Resilient Packet Ring http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci754865,00.html ____________________________________________________________________ ::::::::::::::::::: WHATIS.COM CONTACTS ::::::::::::::::::: LOWELL THING, Site Editor ([EMAIL PROTECTED]) ____________________________________________________________________ MARGARET ROUSE, Assistant Editor ([EMAIL PROTECTED]) ___________________________________________________________________ :::::::::::::::::::: ABOUT THIS NEWSLETTER ::::::::::::::::::::: Created by TechTarget (http://www.techtarget.com) TechTarget - The Most Targeted IT Media Copyright 2002, All Rights Reserved. If you would like to sponsor this or any techtarget newsletter, please contact Gabrielle DeRussy at [EMAIL PROTECTED] Unsubscribe from 'Word of the Day' - Simply Reply to this Email with REMOVE within the Body or Subject > or - Go to: http://WhatIs.techtarget.com/register - Log in to edit your profile. - Click on the link to Edit email subscriptions. - Uncheck the box next to the newsletter you wish to unsubscribe from. - When finished, click "Save Changes to My Profile."
