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Keyword: isotopes

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  • Uranium And The Natural Nuclear Reactor

    04/01/2015 11:15:08 AM PDT · by JimSEA · 10 replies
    Science 2.0 ^ | 3/18/2015 | Robert Hays
    Uranium is the element having 92 protons in its nucleus with typically 146 neutrons. It is the largest naturally occurring element. Like naturally occurring Thorium, uranium is radioactive and eventually decays into radium and radon which are likewise radioactive. Both uranium and thorium decay through many series of radioactive elements until they eventually become lead. The process of radioactive decay follows a common yet generally unfamiliar law known as exponential decay. It is from this decay law that we get the term, "half-life". The way this works is that when you start with a fixed amount of a radioactive material,...
  • Particles accelerate without a push (But Newton's not dead)

    01/25/2015 10:48:22 PM PST · by LibWhacker · 8 replies
    MIT News Office ^ | 1/20/15 | David L. Chandler
    New analysis shows a way to self-propel subatomic particles, extend the lifetime of unstable isotopes. David L. Chandler | MIT News Office January 20, 2015 Press Inquiries Some physical principles have been considered immutable since the time of Isaac Newton: Light always travels in straight lines. No physical object can change its speed unless some outside force acts on it. Not so fast, says a new generation of physicists: While the underlying physical laws haven’t changed, new ways of “tricking” those laws to permit seemingly impossible actions have begun to appear. For example, work that began in 2007 proved that...
  • More Fluctuations Found in Isotopic Clocks

    08/17/2012 11:21:22 AM PDT · by fishtank · 204 replies
    Institute for Creation Research ^ | 8-17-2012 | Brian Thomas
    More Fluctuations Found in Isotopic Clocks by Brian Thomas, M.S. | Aug. 17, 2012 Age-dating a rock using its radioactive isotopes only works by assuming that the rate at which that "clock" ticks was constant in the past and essentially identical to that in the present. Not long ago, scientists discovered excess helium in crystals1 and "orphaned" polonium radiohalos,2 both of which imply that the decay rates of isotopes commonly used to date earth rocks were dramatically accelerated in the past. Even today, researchers are finding small but significant changes in isotope decay rates, and these add credibility to the...
  • ABC News San Diego: WMD's Found At Port? (Video)

    02/11/2011 6:27:09 PM PST · by My Favorite Headache · 104 replies · 1+ views
    ABC News
    This follow up story aired today at 5pm in San Diego. I believe that there will be heads rolling at this port ASAP.
  • Pu-238 Restart Denied with Final Passage of Energy Bill

    10/21/2009 12:43:45 AM PDT · by ErnstStavroBlofeld · 6 replies · 575+ views
    Space News ^ | 10/20/2009 | Brian Berger
    The U.S. Senate gave final passage to an energy and water spending bill Oct. 15 that denies President Barack Obamas request for $30 million for the Department of Energy to restart production of plutonium-238 (pu-238) for NASA deep space missions. The House of Representatives originally approved $10 million of Obamas pu-238 request for next year, but ultimately adopted the Senates position before voting Oct. 1 to approve the conference report on the 2010 Energy-Water Appropriations bill (H.R. 3183). The bill now heads to Obama, who is expected to sign it. NASA relies on pu-238 to power long-lasting spacecraft batteries that...
  • Manny Ramirez Debuts With Isotopes

    06/24/2009 2:44:33 PM PDT · by La Enchiladita · 5 replies · 513+ views
    KOAT TV ^ | June 24, 2009 | Staff
    POSTED: 7:41 pm MDT June 23, 2009 UPDATED: 12:06 am MDT June 24, 2009 ALBUQUERQUE, N.M. -- The crowd for Tuesday night's Isotopes game could be a record one and those fortunate enough to have tickets are already getting into the ball park. Fan Kyle Morrow made sure he didn't miss his chance. "I came in at 9 o'clock this morning, because I live baseball and I love Manny Ramirez" Morrow said. Morrow was one of thousands in a standing room only crowd who will pack into Isotopes Stadium for a glance at Manny Ramirez," said Morrow. "He gave this...
  • Written In Bone

    04/14/2007 8:25:48 AM PDT · by blam · 12 replies · 437+ views
    Archaeology Magazine ^ | May- June, 2007 | Brenda Fowler
    Written in Bone Volume 60 Number 3, May/June 2007 by Brenda Fowler How radioactive isotopes reveal the migrations of ancient people A molar from the city of Campeche in Mexico (Courtesy Douglas Price) In the late thirteenth century, drought ravaged the American Southwest, withering the corn, squash, and beans upon which ancient inhabitants relied for survival. Across the region people abandoned their homes in a desperate search for arable land. Some were lucky enough to find a moist Arizona valley where they built a settlement now known as Grasshopper Pueblo. At its peak, the pueblo consisted of 500 rooms housing...