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Latest Leptons Stories

a6f00163951d09254532d14387c7bec81
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...

8e3f0b83b3e0f6ad02fd2e6b829b20141
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....

117ea91a65d28a3e50e385efc41519d51
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...

d252942075a806ec5cf1e11833f542051
2009-01-21 11:00:00

Cosmic-rays detected half a mile underground in a disused U.S. iron-mine can be used to detect major weather events occurring 20 miles up in the Earth's upper atmosphere, a new study has revealed. Published in the journal Geophysical Research Letters and led by scientists from the UK's National Centre for Atmospheric Science (NCAS) and the Science and Technology Facilities Council (STFC), this remarkable study shows how the number of high-energy cosmic-rays reaching a detector deep...

88a95cd42cef6f00922690095238f6121
2008-11-19 14:55:00

 Researchers at Washington University in St. Louis have shed light on a basic process that could improve future solar cells."One type of solar cell design starts with a chain of chromophores strung between two electrodes," explained Dewey Holten, Ph.D., professor of chemistry in Arts & Sciences. "This chain absorbs the light energy and directs that energy toward one electrode, where it is deposited as an electron. The molecule that lost the electron now has a positive charge left...

06c8b4671e78c675cc3186a48970794d1
2008-11-18 13:20:00

Take a gold sample the size of the head of a push pin, shoot a laser through it, and suddenly more than 100 billion particles of anti-matter appear. The anti-matter, also known as positrons, shoots out of the target in a cone-shaped plasma "jet." This new ability to create a large number of positrons in a small laboratory opens the door to several fresh avenues of anti-matter research, including an understanding of the physics underlying various astrophysical phenomena such as black holes and...

1ec25caa389099f07476dddd2bd0a2471
2008-11-14 10:25:00

Theoretical physicist Uwe Thumm and his colleagues Feng He and Andreas Becker not only work with some of the smallest molecules in the universe, but they now have found a way to control the motion of the molecules' building blocks, electrons and nuclei. Thumm is a professor of physics at Kansas State University. Feng is a research associate at the K-State physics department, and Becker is a professor at the University of Colorado in Boulder. The collaborators have found a way to steer the...

2008-11-13 09:00:26

Advanced Electron Beams (AEB), which enables the green factory of the future by making sustainability possible and profitable for manufacturers, and the University of Reims Champagne-Ardenne today announced a collaboration in which the University will use AEB's electron beam technology for fundamental research on electron beam-induced chemistry and materials transformation. This research has a wide range of potential applications, including creating more environmentally friendly and...

0f7d61ac4ab6d0f993b6100f041be5d91
2008-10-16 14:07:34

Physicists working to disprove "Lorentz invariance" -- Einstein's prediction that matter and massless particles will behave the same no matter how they're turned or how fast they go -- won't get that satisfaction from muon neutrinos, at least for the time being, says a consortium of scientists. The test of Lorentz invariance, conducted by MINOS Experiment scientists and reported in the Oct. 10 issue of Physical Review Letters, started with a stream of muon neutrinos produced at Fermilab...


Latest Leptons Reference Libraries

4_ca2a430d92c0a654eab512344edfa0dd2
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
sough
  • A murmuring sound; a rushing or whistling sound, like that of the wind; a deep sigh.
  • A gentle breeze; a waft; a breath.
  • Any rumor that engages general attention.
  • A cant or whining mode of speaking, especially in preaching or praying; the chant or recitative characteristic of the old Presbyterians in Scotland.
  • To make a rushing, whistling, or sighing sound; emit a hollow murmur; murmur or sigh like the wind.
  • To breathe in or as in sleep.
  • To utter in a whining or monotonous tone.
According to the OED, from the 16th century, this word is 'almost exclusively Scots and northern dialect until adopted in general literary use in the 19th.'
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