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``It's essentially a matter of physics...'' -- Donald Rumsfeld, Secretary of Defense |
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Edward Teller is dead at 95 |
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Topic: Science |
12:35 am EDT, Sep 10, 2003 |
Besides being the "father of the H-bomb" teller was also a great teacher who had a knack for coming up with uniquely difficult physics problems to confound generations of students. He will be missed Edward Teller is dead at 95 |
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eBay item 2555673237 - Double Dutch Bus by Devin Vasquez |
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Topic: Cyber-Culture |
5:11 pm EDT, Sep 3, 2003 |
The real story is here: http://george.hotelling.net/. This guy is testing the waters for your right of first sale for digital media. All proceeds get donated to EFF. Bid early, bid often. eBay item 2555673237 - Double Dutch Bus by Devin Vasquez |
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[hep-ex/0307083] Evidence for the positive-strangeness pentaquark θ+ in photoproduction with the SAPHIR detector at ELSA |
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Topic: Physics |
2:47 pm EDT, Sep 3, 2003 |
Evidence of five (5!!!) quark baryon found at the ELectron Stretcher Accelerator (ELSA) in Bonnn, Germany. The SAPHIR collaboration announced evidence for Theta-plus with a mass of 1540 MeV and a width of less than 25 MeV, compatible with experimental results from SPring-8, ITEP and Jefferson Lab. This exotic particle is allowed under the rules of Quantum Chromodynamics (QCD http://scienceworld.wolfram.com/physics/QuantumChromodynamics.html). It is composed of two up quarks, two down quarks and one anti-strange quark (uudd s-bar). It is called "exotic" because the antiquark is of a different flavor than the other quarks composing the baryon. It's structure is interesting. It seems like it's got properties of both mesons and bayrons... I'll be reading this paper and posting a follow up. More info here to be found: http://www.phy.ohiou.edu/~hicks/thplus.htm http://www.britannicaindia.com/nicad_newtry.asp?channel=kaleidoscope&tsearch=2083 [hep-ex/0307083] Evidence for the positive-strangeness pentaquark θ+ in photoproduction with the SAPHIR detector at ELSA |
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LASER WEAPONS
HAN SOLO WOULD BE AT HOME |
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Topic: Physics |
2:32 pm EDT, Sep 3, 2003 |
] The Office of Naval Research is part of a team that is ] developing an electrically driven, tunable laser that ] could transmit infrared light for use in ship-defense ] systems. Amazingly the FEL (http://www.jlab.org/FEL/feldescrip.html) at Tomas Jefferson National Accelerator Facility (or just TJ Labs for short) is now the world's most powerful FEL, zotting pulsed beams in the 10kW power range (full height half mean power). LASER WEAPONS
HAN SOLO WOULD BE AT HOME |
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[cond-mat/0309053] Paradoxical games and Brownian thermal engines |
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Topic: Physics |
1:31 pm EDT, Sep 3, 2003 |
] Two losing games, when alternated in a periodic or random ] fashion, can produce a winning game. This paradox occurs ] in a family of stochastic processes: if one combines two ] or more dynamics where a given quantity decreases, the ] result can be a dynamic system where this quantity ] increases. The paradox could be applied to a number of ] stochastic systems and has drawn the attention of ] researchers from different areas. In this paper we show ] how the phenomenon can be used to design Brownian or ] molecular motors, i.e., thermal engines that operate by ] rectifying fluctuations. We briefly review the literature ] on Brownian motors, pointing out that a new ] thermodynamics of Brownian motors will be fundamental to ] the understanding of most processes of energy ] transduction in molecular biology. Translated from the original spanish, this arxiv article is a wonderful catchup on Parrondo's paradox (http://mathworld.wolfram.com/ParrondosParadox.html). In the end the author's show it is possible to construct Brownian (or molecular) motor. Gambling for free energy is cool. [cond-mat/0309053] Paradoxical games and Brownian thermal engines |
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ONR TO UNVEIL THE MATCHBOX CLOCK |
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Topic: Physics |
12:50 pm EDT, Sep 3, 2003 |
] In October 2003 the Office of Naval Research will unveil ] the performance of the next-generation, super-accurate ] clock no bigger than a matchbox. The Ultra-miniature ] Rubidium (Rb) Atomic Clock, 40 cubic centimeters in ] volume and using a minuscule one watt of power, doesnt ] weigh much more than a matchbox either. ] ] And...it will lose only about one second every 10,000 years. Office of Naval Research figures it out again. This time w/ a Super Dooper Rubium clock. What does this mean for you and me? Well more accurate gps readings for one thing. The other is the ability to give ultra-fine grain timing to almost any device... better guided missles, better aimed unmanned surveillance drones. ONR -- "Securing America's freedom by increasingly more accurate bombing technology." ONR TO UNVEIL THE MATCHBOX CLOCK |
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UFO Sighting August 20, 2003 in Manlius, New York |
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Topic: Science |
4:58 pm EDT, Aug 25, 2003 |
] ] At 10:00 pm EST, August 20th 2003 Broadfield Road in ] Manlius, New York. I observed a white glowing round ] object approximately the size of a bottle cap at half an ] arms length, slowly traveling from South to North ] (approx. 40 M.P.H .) low in the western sky (approx.. 300 ] ft.). The object had about the same luminescence as a ] bright full moon and could still be seen as it passed ] behind the areas trees. Unrestricted viewing observation ] time was about 2 seconds, total observation time was ] approximately 5 seconds before the object left the area. Apperently Mars causes UFO reports. :) --timball UFO Sighting August 20, 2003 in Manlius, New York |
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Serotonin Transporter Gene Shown to Influence College Drinking Habits |
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Topic: Science |
12:56 am EDT, Aug 24, 2003 |
] Researchers have identified a genetic factor that may ] predispose young people to harmful drinking habits. A ] team of scientists interviewed college students about ] their alcohol consumption and then analyzed their genetic ] profiles, or genotypes. They found that students who ] shared a particular variant of the serotonin transporter ] gene (5HTT) consumed more alcohol per occasion, more ] often drank expressly to become inebriated, and were more ] likely to engage in binge drinking than students without ] the variant. The study appears in the current issue of ] the journal Alcohol and Alcoholism. I blame my sophmore year in college on my genes. Serotonin Transporter Gene Shown to Influence College Drinking Habits |
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