Latest Leptons Stories

2009-10-15 09:40:00

Researchers have unearthed a magnetic force similar to electricity: magnetic charges that act and interrelate like electrical charges. This is the first known use of the magnetic monopoles that subsist in spin ice crystals. A research team wrote that monopoles have the ability to group together and form a "magnetic current" similar to electricity. Called "magnetricity", this new discovery may be utilized in magnetic storage or computers. Magnetic monopoles were first thought to be present a...

2009-08-17 19:52:32

Recently, several astronomical experiments have revealed mysterious components of elementary particles. But up until now, the origin of electrons and positrons is unknown. Is dark matter the actual origin of this radiation, as some physicists speculate? Now an international team of astrophysicists, including the Bochum junior professor Dr. Julia Becker and the Dortmund physicist Prof. Dr. Dr. Wolfgang Rohde, have found a simple explanation: giant stars, at least fifteen times the mass of our...

2009-08-17 08:26:18

A project to fire neutrinos through the earth from Illinois to northern Minnesota is back on track because of U.S. stimulus funds, officials say. The Fermilab project, called Nova, has been suspended due to funding problems, but now $40 million is going to build a neutrino detector in Minnesota and another $103 million is heading to Fermilab for other aspects of the project, including a move to boost the power of the neutrino beam, The Washington Post reported Monday. Neutrinos are elementary...

2009-08-16 10:00:00

Will the universe expand outward for all of eternity and end in a vast, dark, cold, sterile, diffuse nothingness? Or will the "Big Bang" "” the gargantuan explosion that formed the universe 14 billion years ago "” end in the "Big Crunch?" Planets, stars and galaxies all hurtle inward and collapse into an incredibly hot, dense mass a billion times smaller than the period at the end of this sentence. And then "¦ KA-BOOOOM!!! Another Big Bang and another universe forms and...

2009-07-23 09:33:53

A team of researchers working with data from ESA's Integral gamma-ray observatory has disproved theories that some form of dark matter explains mysterious radiation in the Milky Way. That this radiation exists has been known since the 1970s, and several theories have been proposed to explain it. Integral's unprecedented spectral and spatial resolution showed that it strongly peaks towards the center of the Galaxy, with an asymmetry along the Galactic disc. Several researchers have...

2009-07-09 06:20:00

A team of astrophysicists has solved a mystery that led some scientists to speculate that the distribution of certain gamma rays in our Milky Way galaxy was evidence of a form of undetectable "dark matter" believed to make up much of the mass of the universe. In two separate scientific papers, the most recent of which appears in the July 10 issue of the journal Physical Review Letters, the astrophysicists show that this distribution of gamma rays can be explained by the way "antimatter...

2009-06-24 09:50:00

South Dakota Gov. Mike Rounds paid a visit to UC Berkeley and Berkeley Lab last Friday (June 12) to get a feel for the type of research operation the campus and the lab plan to build at his state's famed Homestake gold mine.Rounds has strongly supported efforts to turn the mine, founded in 1877 by mining magnate and California Sen. George Hearst and taken out of operation in 2002, into the world's premier underground research laboratory, and the only one capable of answering critical...

2009-05-29 13:54:31

True muonium, a long-theorized but never-seen atom, might be observed in future experiments, thanks to recent theoretical work by researchers at the Department of Energy's SLAC National Accelerator Laboratory and Arizona State University. True muonium was first theorized more than 50 years ago, but until now no one had uncovered an unambiguous method by which it could be created and observed. "We don't usually work in this area, but one day we were idly talking about how experimentalists...

2009-05-21 12:57:24

Ultrafast laser research at Kansas State University has allowed physicists to build on Nobel Prize-winning work in photo-electronics by none other than Albert Einstein. Einstein received the Nobel Prize in 1921 for his theoretical explanation in 1905 of the so-called photo-effect -- that is, the emission of electrons from a metal surface by incident light. In Einstein's time, laboratory light sources provided light of very low intensity in comparison with modern lasers like those at K-State....

2009-01-31 11:40:00

Storing information in electron waves Stanford researchers have reclaimed bragging rights for creating the world's smallest writing, a distinction the university first gained in 1985 and lost in 1990. How small is the writing? The letters in the words are assembled from subatomic sized bits as small as 0.3 nanometers, or roughly one third of a billionth of a meter. The researchers encoded the letters "S" and "U" (as in Stanford University) within the interference patterns formed by quantum...

Latest Leptons Reference Libraries

2004-10-19 04:45:41

Solar Radiation -- Solar radiation is radiant energy emitted by the sun due to nuclear fusion reactions. Fusion is the process whereby stars produce huge quantities of energy from the fusion of hydrogen or helium, in one of the most efficient processes of energy generation. The radiation referred to is usually electromagnetic energy, particularly infrared radiation, visible light, and ultraviolet. Some stars are known to emit radiation of other wavelengths. Solar neutrinos are a...

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Word of the Day
  • A unit of saved energy.
Coined by Amory Lovins, chairman of the Rocky Mountain Institute as a contraction of negative watt on the model of similar compounds like megawatt.