An experimental atomic clock based on ytterbium atoms is about four times more accurate than it was several years ago, giving it a precision comparable to that of the NIST-F1 cesium fountain clock, the nation's civilian time ...
General Physics
Aug 11, 2009
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Atomic clocks based on the oscillations of a cesium atom keep amazingly steady time and also define the precise length of a second. But cesium clocks are no longer the most accurate. That title has been transferred to an ...
General Physics
Apr 30, 2012
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Typhoons that hit Japan each year are helping spread radioactive material from the Fukushima nuclear disaster into the country's waterways, researchers say.
Environment
Nov 28, 2013
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Scientists have discovered a radioactive substance in sediment under a Swiss lake used for drinking water and situated near a nuclear plant, the Le Matin Dimanche weekly reported Sunday.
Environment
Jul 14, 2013
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Seattle Seahawks cornerback Richard Sherman gets called a lot of things. He calls himself the greatest cornerback in the NFL (and Seattle fans tend to agree). Sportswriters and some other players call him a loudmouth and ...
Other
Jan 30, 2015
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17
Researchers at Rice University and Kazan Federal University in Russia have found a way to extract radioactivity from water and said their discovery could help purify the hundreds of millions of gallons of contaminated water ...
Materials Science
Jan 19, 2017
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(AP) -- For a look at just how long radioactivity can hang around, consider Germany's wild boars.
Environment
Apr 1, 2011
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New revelations of contaminated water leaking from storage tanks at the tsunami-ravaged Fukushima Dai-ichi nuclear power plant have raised alarm, coming just weeks after Japanese officials acknowledged that radioactive water ...
Energy & Green Tech
Sep 5, 2013
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Researchers from Skoltech, Jiangsu Normal University, and elsewhere have predicted unexpected compounds formed by lithium and cesium under high pressure. These new substances display unexpected chemistry and never-before-seen ...
Nanophysics
May 31, 2023
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39
Scientific experts warned Congress more than a decade ago that just four teaspoons of radioactive cesium-137—if spread by a terrorist's "dirty bomb"—could contaminate up to 10 square miles of Manhattan.
Environment
Jan 2, 2020
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