----- Forwarded Message ---- From: ISMAIL CHOHAN <[email protected]> To: nidokido group <[email protected]> Sent: Tue, January 25, 2011 11:03:54 AM Subject: [nidokidos] Kilogram is losing weight, say experts Click here to get beautiful emails Click here to join forum ________________________________ Kilogram is losing weight, say experts London , Jan 24 (ANI): Experts want to redefine the kilogram, which came into existence two centuries ago. They fear it is not as constant as it should be. Experts are willing to make the changes so that it is no longer based on the mass of a solid cylinder of platinum-iridium alloy that sits beneath three layers of protective glass sealed in a locked vault in Sevres, France . This metal block, known as the International Prototype Kilogram, has been used since it was first registered with the International Bureau of Weights and Measures (BIPM) in 1889 as the definitive unit of mass against which all other kilograms are measured. In the past 122 years, it has been brought out of storage just three times to calibrate the national prototype kilograms used by countries around the world. However, scientists now believe it is time to redefine the kilogram because there is evidence that the precise mass of the international prototype in Sevres is not as constant as it should be. "We think it is losing weight, and we don't know why," the Independent quoted BIPM's Michael Stock, as saying. "From the three times we have had it out to make calibrations, we have had indications that it is not perfectly stable. It seems to have lost about 50 micrograms and there is no real explanation," he said. "There are no real problems now but if it continues, then we may run into problems in 10 or 20 years' time because measurements are getting even more precise. We need to anticipate the problems and, from time to time, we have to improve our definitions of the standard units of measurement - if you need to make an accurate measure of length, you need a good ruler," he added. (ANI) Courtesy: Yahoo ISMAIL CHOHAN Stop emails | Join Us by Email | Join from Web | Visit Yahoo! Group | Join Nidokidos Forum ________________________________ __._,_.___ Reply to sender | Reply to group | Reply via web post | Start a New Topic Messages in this topic (1) Recent Activity: * New Members 1035 Visit Your Group =================================================== Join nidokidos Group for best of forwarded mails http://groups.yahoo.com/group/nidokidos [email protected] Be the part of Nidokidos , Join our Forum http://www.nidokidos.org =================================================== MARKETPLACE Stay on top of your group activity without leaving the page you're on - Get the Yahoo! Toolbar now. ________________________________ Get great advice about dogs and cats. Visit the Dog & Cat Answers Center. Switch to: Text-Only, Daily Digest • Unsubscribe • Terms of Use . __,_._,___
