The Kilogram Has Gained Weight
by Tia Ghose, LiveScience Staff Writer
Date: 06 January 2013 Time: 07:43 PM ET
|The international prototype kilogram is a cylinder of
platinum and platinum-iridium alloy, which is kept at the International
Bureau of Weights and Measures (BIPM) near Paris.
CREDIT: Image Courtesy BIPM
As a result, each country that has one of these standard masses has a slightly different definition of the kilogram, which could throw off science experiments that require very precise weight measurements or international trade in highly restricted items that are restricted by weight, such as radioactive materials.
But ozone and ultraviolet light could be used to clean the kilograms without damaging them, the research suggests.
More - Link >>> http://www.livescience.com/26017-kilogram-gained-weight.html
Source: LiveScience.com .
Related Blog Post --
Tell Time Using Matter-Waves (2013 Jan. 11):
Glenn A. Walsh, Project Director,
Friends of the Zeiss < http://friendsofthezeiss.org >
Electronic Mail - < email@example.com >
About the Author: < http://buhlplanetarium.tripod.com/#GAW >
SPACE & SCIENCE NEWS, ASTRONOMICAL CALENDAR:
Twitter: < http://twitter.com/
Facebook: < http://www.facebook.com/pages/
Blog: < http://spacewatchtower.
Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
* Adler Planetarium, Chicago:
* Astronomer, Educator, Optician John A. Brashear:
< http://johnbrashear.tripod.com >
* Andrew Carnegie & Carnegie Libraries:
* Civil War Museum of Andrew Carnegie Free Library:
< http://garespypost.tripod.com >
* cable-car railway, Pittsburgh:
* Public Transit: