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Latest Physics & Astronomy Stories
Large Hadron Collider Set To Unveil A New World Of Particle Physics
Source: UCSC Posted: 8/28/2008The field of particle physics is poised to enter unknown territory with the startup of a massive new accelerator--the Large Hadron Collider (LHC)--in Europe this summer. On September 10, LHC scientists will attempt to send the first beam of protons speeding around the accelerator.Full story...
Cluster Watches Earth’s Leaky Atmosphere
Source: ESA Posted: 8/28/2008Oxygen is constantly leaking out of Earth’s atmosphere and into space. Now, ESA’s formation-flying quartet of satellites, Cluster, has discovered the physical mechanism that is driving the escape.Full story...
New 'Nano-Positioners' May Have Atomic-Scale Precision
Source: Purdue Posted: 8/28/2008Engineers have created a tiny motorized positioning device, called a monolithic comb drive, which can be used as a 'nanoscale manipulator' that precisely moves or senses movement and forces.Full story...
Quantum 'Traffic Jam' in High-Temperature Superconductors
Source: BNL Posted: 8/28/2008Scientists have uncovered the first experimental evidence for why the transition temperature of high-temperature superconductors cannot simply be elevated by increasing the electrons' binding energy.Full story...
by Anton Skorucak and ScienceIQ.com
Collision of two gold nuclei at the RHIC accelerator. An attempt to produce quark-gluon plasma in the laboratory.Brookhaven National Laboratory/RHIC-PHENIX
In the first few millionths of the second after the Big Bang, the universe looked very different than today. In fact the universe existed as a different form of matter altogether: the quark-gluon plasma or QGP, a weird 'soup' of quarks and gluons buzzing around frantically at temperatures of over 1,000,000,000,000 degrees.Quarks are tiny particles (approximately same in size to electrons) which make up protons, neutrons and other so called 'hadron' particles. Just like photons are 'force carrier' particles for the electro-magnetic force, gluons are force carrier particles for the strong force. The strong force is the strongest force in the universe and is responsible for keeping the quarks 'glued' together inside protons and neutrons. The strong force is actually so strong that no one has even succeeded in separating individual quarks, they always come in pairs of two or three.Immediately after the Big Bang the temperature was so high that it overpowered the gluons and freed the quarks to buzz around. The result was a dense 'soup' of free quarks and gluons; the quark-gluon plasma. This plasma quickly disappeared as the universe cooled. In fact, the QGP was gone within the first hundred-thousandth of a second when the gluons started 'trapping' all the quarks into hadrons (process called hadronization). After the first second or so the first nuclei started forming from those hadrons, and it took almost a billion years for the first atoms to form. Believe it or not, humans are trying to reproduce this QGP in the laboratory! A project called Phenix at the Brookhaven National Laboratory in Long Island is trying to produce QGP by smashing particles at extreme speeds inside an accelerator called RHIC (Relativisting Heavy Ion Collider). The early universe soup may be soon served at Brookhaven, back by popular demand after being forgotten for billions and billions of years!
For more science facts like this one go to: ScienceIQ.com
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