Latest Lawrence Livermore National Laboratory Stories

Separating Signal And Noise In Climate Warming
2011-11-19 04:19:22

In order to separate human-caused global warming from the "noise" of purely natural climate fluctuations, temperature records must be at least 17 years long, according to climate scientists. To address criticism of the reliability of thermometer records of surface warming, Lawrence Livermore National Laboratory scientists analyzed satellite measurements of the temperature of the lower troposphere (the region of the atmosphere from the surface to roughly five miles above) and saw a clear...

2011-11-14 16:00:00

LLNL, LANL and Sandia initiate 2PetaFlop/s Xtreme-Xâ“ž¢ Supercomputer deployment based on the Intel® Xeon® processor E5 Family Seattle, CA (PRWEB) November 14, 2011 Appro (http://www.appro.com), a leading provider of supercomputing solutions, announces today that the three U.S. national laboratories under contract with the US Department of Energyâs National Nuclear Security Administration (NNSA) initiated deployment of the next-generation,...

Clearing The Air On Cloud Simulations
2011-10-27 08:36:16

Climate models have a hard time representing clouds accurately because they lack the spatial resolution necessary to accurately simulate the billowy air masses. But Livermore scientists and international collaborators have developed a new tool that will help scientists better represent the clouds observed in the sky in climate models. Traditionally, observations from satellites infer the properties of clouds from the radiation field (reflection of sunlight back into space, or thermal...

2011-06-13 15:38:00

PHILADELPHIA, June 13, 2011 /PRNewswire/ -- CDI Corp. (NYSE: CDI) announced today that its CDI-Aerospace division has entered into a long term service agreement with Lawrence Livermore National Security, LLC in support of the Lawrence Livermore National Lab National Ignition Facility (NIF) in Livermore, CA. The service agreement has a term of five years. With this service agreement, CDI-Aerospace will provide Lawrence Livermore's National Ignition and Photon Science Directorate with...

2011-06-09 05:50:03

Scientists from the scientific governing committees of physics and chemistry have added two new elements -- yet to be named -- to the periodic table, reports The Associated Press (AP). The elements, currently known only as 114 and 116, are both highly radioactive and, with respective atomic weights of 289 and 292, are now the heaviest elements on the periodic table of elements, bumping copernicium and roentgenium down the list of heavyweights. The two radioactive elements exist only for a...

2011-05-18 08:36:13

By Anne M Stark, LLNL By combining high pressure with high temperature, Livermore researchers have created a nanocyrstalline diamond aerogel that could improve the optics for something as big as a telescope or as small as the lenses in eyeglasses. Aerogels are a class of materials that exhibit the lowest density, thermal conductivity, refractive index and sound velocity of any bulk solid. Aerogels are among the most versatile materials available for technical applications due to their many...

2011-05-11 08:14:44

Anne M Stark, LLNL Skin cells shed from livestock infected with foot and mouth disease could very well spread the disease. In a new paper appearing in the Proceedings of the Royal Society B, Lawrence Livermore National Laboratory scientist Michael Dillon proposed that virus-infected skin cells could be a source of infectious foot and mouth disease virus aerosols. His proposal is based on the facts that foot and mouth disease virus is found in skin and that airborne skin cells are known to...

Latest Lawrence Livermore National Laboratory Reference Libraries

2004-10-19 04:45:41

Massive Compact Halo Object (MACHO) -- Massive compact halo objects, or MACHOs, are a type of astronomical body proposed as one possible explanation for the presence of dark matter in galactic halos. A MACHO is a small chunk of normal baryonic matter, far smaller than a star, which drifts through interstellar space unassociated with any solar system. Since MACHOs would not emit any light of their own, they would be very hard to detect. Recent work has suggested that MACHOs are not...

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Word of the Day
  • A somewhat riotous parade, accompanied with the blowing of tin horns, and other discordant noises; also, a burlesque serenade; a charivari.
'Callithump' is a back-formation of 'callithumpian,' a 'fanciful formation' according to the Oxford English Dictionary. However, the English Dialect Dictionary, says 'Gallithumpians' is a Dorset and Devon word from the 1790s that refers to 'a society of radical social reformers' or 'noisy disturbers of elections and meetings.'