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Skeptical Debunker

Exotic Antimatter Created on Earth - Yahoo! News - 0 views

  • Among the many particles that resulted from this crash were bizarre objects called anti-hypertritons. Not only are these things antimatter, but they're also what's called strange matter. Where normal atomic nuclei are made of protons and neutrons (which are made of "up" quarks and "down" quarks), strange nuclei also have so-called Lambda particles that contain another flavor of quark called "strange" as well. These Lambda particles orbit around the protons and neutrons. If all that is a little much to straighten out, just think of anti-hypertritons as several kinds of weird. Though they normally don't exist on Earth, these particles may be hiding in the universe in very hot, dense places like the centers of some stars, and most likely were around when the universe was extremely young and energetic, and all the matter was packed into a very small, sweltering space. "This is the first time they've ever been created in a laboratory or a situation where they can be studied," said researcher Carl Gagliardi of Texas A&M University. "We don't have anti-nuclei sitting around on a shelf that we can use to put anti-strangeness into. Only a few anti-nuclei have been observed so far." These particles weren't around for too long, though – in fact, they didn't last long enough to collide with normal matter and annihilate. Instead they just decayed after a fraction of a billionth of a second. "That sounds like a really short time, but in fact on the nuclear clock it's actually a long time," Gagliardi told SPACE.com. "In that fraction of a billionth of a second that Lambda particle has already gone around the nucleus as many times as the Earth has gone around the sun since the solar system was created."
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    Scientists have created a never-before seen type of exotic matter that is thought to have been present at the earliest stages of the universe, right after the Big Bang. The new matter is a particularly weird form of antimatter, which is like a mirror-image of regular matter. Every normal particle is thought to have an antimatter partner, and if the two come into contact, they annihilate. The recent feat of matter-tinkering was accomplished by smashing charged gold atoms at each other at super-high speeds in a particle accelerator called the Relativistic Heavy Ion Collider at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory in Upton, N.Y.
Janos Haits

Home - 0 views

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    The Health System Measurement Project tracks government data on critical U.S. health system indicators. The website presents national trend data as well as detailed views broken out by population characteristics such as age, sex, income level, and insurance coverage status.
thinkahol *

Binge eaters' dopamine levels spike at sight, smell of food - 1 views

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    ScienceDaily (Feb. 28, 2011) - A brain imaging study at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory reveals a subtle difference between ordinary obese subjects and those who compulsively overeat, or binge: In binge eaters but not ordinary obese subjects, the mere sight or smell of favorite foods triggers a spike in dopamine -- a brain chemical linked to reward and motivation.
Skeptical Debunker

'Hella' Proposed as Official Big Number - Yahoo! News - 0 views

  • To become official, "hella" would have to jump through quite a few bureaucratic hoops. It would have to pass through the Consultative Committee for Units (CCU), one of 10 advisory committees of the International Committee for Weights and Measures (CIPM). If the CCU recommends it the CIPM, that board must then decide whether to advance the cause to the General Conference on Weights and Measures (CGPM), the official authority that can make changes to the SI system. That international organization, based in France, includes members from 81 countries. "I think that for a number of reasons it's a long shot," said Ben Stein, a spokesperson for the National Institute of Standards and Technology, the U.S. organization that handles measurements. "The types of things they would consider are is it needed, does it add or reduce confusion, are the names consistent with other names associated with the prefixes?" Sendek argues that the name would honor the scientific contributions of Northern Californians, who have famously popularized the phrase "hella" to mean "a whole lot."
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    Soon the word "hella" may not be associated with California surfers as much as with scientists in lab coats. A physics student is petitioning to add "hella" to the International System of Units (SI) as the official designation of 10 to the 27th power, or a trillion trillions.
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