I don't think this compares with Fermilab. The fine article is talking about creating positrons, not anti-protons. This isn't the first time I've heard about creating positrons from a laser shown upon a gold foil target. Here are two (from 2004 and 2001 respectively) that I just found on Google Scholar describing a result and a theory behind the positron production:
http://llacolen.ciencias.uchile.cl/~vmunoz/download/papers/wclpp05.pdf
http://www-project.slac.stanford.edu/lc/local/PolarizedPositrons/doc/ClassicalPapers/B_Shen-J_Meyer-ter-Vehn-PRE65_16405.pdf
It also isn't very efficient. They make 10^11 positrons per 400 J of energy input. If those positrons react with 10^11 electrons, they produce gamma rays with the energy 2 * (electron mass * (10^11)) * (c^2) = 0.0163742083 joules. Maybe it is more efficient than Fermilab, but that's still not very much. Since these are light positrons - not heavy anti-protons - I don't think these results would be very useful for fusion. Maybe as a source of gamma rays or as a research tool.
I agree with Eskimo. I'm also a martial artist (BJJ instructor), and we only do dynamic stretches before practice or sparring as well. Instead we begin with a light warm-up to (duh!) warm up the muscles. Then we train sport-specific movements as well as dynamic stretches to build muscle memory and increase flexibility. After practice we might finish with some yoga, but we got rid of the generic static stretches with no problems. Our Muay Thai instructors do the same thing at their practices. As far as I knew, the thesis of this article was common knowledge in the sports world for a while now. It has made us more flexible and faster with less occurring of injuries than when I was doing static stretches. We have some really good fighters and competitors, so I don't doubt our training methods. They seem to be working for us.
On an up note, however: "Nato commanders in southern Afghanistan are deeply concerned at the level of corruptionCharles Heyman, a defence analyst and former British Army major, said millions of pounds earmarked for reconstruction were being siphoned off. "It almost comes with the programme," he said. "You have to build in an element of that into any programme because you know it will leak into people's pockets."
So here is a case of a state legislator, who blew a
I competed in the Pennsylvania Open Judo Championships yesterday. It was a double elimination shiai (tournament) hosted at Master Eugene's school in Cranberry. This was the first time I participated in - and even witnessed - a judo competition.
I wrote my first Firefox 1.5 extension called "Personal Toolbar Button." Of course, it simply adds a toolbar button that toggles on/off the "Personal Toolbar" toolbar. This is where I keep all my bookmarks, but too many toolbars wastes useful screen real estate. Install it at extension's web site. (Thanks Mozilla.org!)
Had surgery on my ear today. I first injured my ear hurt my ear back in March. I was rolling with a judo shodan (black belt) and tapped him with a choke. Then during standing randori, he schooled me with a billion
I competed in the Kumite Classic this past Saturday (May 27, 2006). It is a no-gi submission wrestling and a gi-required Brazilian Jiu Jitsu tournament. (A gi is the typicially white uniform some martial artists wear.) My record was:
Memory fault - where am I?