Thursday, November 29, 2012
Wednesday, November 28, 2012
New Kinda matter - "Color-Glass Condensate"
The new kind of matter is called color-glass condensate, and is a liquid like wave of gluons, which are elementary particles related to the strong force that sticks quarks together inside protons and neutrons (hence they are like "glue").
Scientists didn't expect this kind of matter would result from the type of particle collisions going on at the Large Hadron Collider at the time. However, it may explain some odd behavior seen inside the machine, which is a giant loop where particles race around underneath Switzerland and France.
Typical LHC particle tracks:
When scientists sped up protons (one of the building blocks of atoms) and lead ions (lead atoms, which contain 82 protons each, stripped of their electrons), and crashed them into each other, the resulting explosions liquefied those particles and gave rise to new particles in their wake. Most of these new particles, as expected, fly off in all directions at close to the speed of light.
The color-glass condensate's dense swarm of gluons may also sweep particles off in the same direction, suggested Brookhaven National Laboratory physicist Raju Venugopalan, who first predicted the substance, which may also be seen after proton-proton collisions.Entangled gluons in the color-glass condensate could explain how particles flying away from the collision point might share information about their flight direction with each other, Venugopalan said. Courtesy: Yahoo.com, CERN
Monday, November 19, 2012
ENCODE - Encyclopedia of DNA Elements released
Thursday, November 15, 2012
Remote Control Car - Now a reality in China !!!
The BYD Su Rui comes with a large key fob featuring a metal control panel which can be used to start and move the car from a distance of 10 meters. The Su Rui can only creep along at 1.2 mph in remote control mode, but otherwise steers and moves -- including in reverse -- as it would if the owner was behind the wheel. BYD advertises the technology as great for parking in tight spots or bringing the car to you in rainy weather, and far more impressive to your date than opening an umbrella. BYD - the battery maker-turned-carbuilder made a splash four years ago with ambitious plans to sell plug-in hybrids in the United States, winning a vote of confidence from investor Warren Buffet who took a 10 percent stake in the firm. Outside of its remote control, the Su Rui offers a few other tricks, including in-dash digital TV and multihue displays, and most of its specs and technology match up well with similar models from Asian or American automakers.
Courtesy: Yahoo.com
Sunday, September 09, 2012
Voyager 1 turns 35, approaches interstellar space...
Below is an image of Voyager I Below is the image of Voyagers and other satellites nearing Heliopause Voyager 1 is poised to cross into interstellar space. Both Voyager 1 and 2 are expected to continue to provide critical data for another decade, if not longer — or at least until their energy supplies can no longer power critical subsystems. The mission objective of the Voyager Interstellar Mission (VIM) is to extend the NASA exploration of the solar system beyond the neighborhood of the outer planets to the outer limits of the Sun's sphere of influence, and possibly beyond. This extended mission is continuing to characterize the outer solar system environment and search for the heliopause boundary, the outer limits of the Sun's magnetic field and outward flow of the solar wind. Penetration of the heliopause boundary between the solar wind and the interstellar medium will allow measurements to be made of the interstellar fields, particles and waves unaffected by the solar wind. The twin Voyager 1 and 2 spacecraft continue exploring where nothing from Earth has flown before. In the 34th year after their 1977 launches, they each are much farther away from Earth and the Sun than Pluto. Voyager 1 and 2 are now in the "Heliosheath" - the outermost layer of the heliosphere where the solar wind is slowed by the pressure of interstellar gas. Both spacecraft are still sending scientific information about their surroundings through the Deep Space Network (DSN) This artist’s rendering provided by NASA is of the Voyager 1 spacecraft, which was launched 35 years ago Wednesday. (Its twin spacecraft, Voyager 2, was launched Aug. 20, 1977.) Cameras aboard the Voyagers were turned off long ago. The nuclear-powered spacecraft, about the size of a subcompact car, still have five instruments to study magnetic fields, cosmic rays and charged particles from the sun known as solar wind. They also carry gold-plated discs containing multilingual greetings, music and pictures — in the off chance that intelligent species come across them.
TIMELINES | |
DATE | MILESTONE |
1977 | Mariner Jupiter/Saturn 1977 is renamed Voyager |
1977 Aug.20 | Voyager 2 launched from Kennedy Space Flight Center |
1977 Sept.5 | Voyager 1 launched from Kennedy Space Flight Center Voyager 1 returns first spacecraft photo of Earth and Moon |
1979 Mar.5 | Voyager 1 makes its closest approach to Jupiter |
1979 July.9 | Voyager 2 makes its closest approach to Jupiter |
1980 Nov.12 | Voyager 1 flies by Saturn Voyager 1 begins its trip out of the Solar System |
1981 Aug.25 | Voyager 2 flies by Saturn |
1982 | Deep Space Network upgrades two 26-m antennas to 34-m |
1986 Jan.24 | Voyager 2 has the first-ever encounter with Uranus Deep Space Network begins expansion of 64-m antennas to 70-m |
1987 | Voyager 2 "observes" Supernova 1987A |
1988 | Voyager 2 returns first color images of Neptune |
1989 Aug.25 | Voyager 2 is the first spacecraft to observe Neptune Voyager 2 begins its trip out of the Solar System, below the ecliptic plane |
1990 Jan.1 | Begins Voyager Interstellar Mission |
1990 Feb.14 | Last Voyager Images - Portrait of the Solar System |
1998 Feb.17 | Voyager 1 passes Pioneer 10 to become the most distant human-made object in space |
2004 Dec.15 | Voyager 1 crosses Termination Shock |
2007 Sep.5 | Voyager 2 crosses Termination Shock |
2012 Sep.9 | Voyager enters Interstellar Space |
Monday, August 06, 2012
NASA's CURIOSITY rover lands safely on Mars
Amazing Video(s) here:
CURIOSITY - LANDING:
CURIOSITY - REAL:
CURIOSITY - CARTOON:
More Images here: Click here for more Images
Courtesy: Washington PostTuesday, July 17, 2012
New Tree Ring Study ---> Global Chilling ?
The tree rings "prove [the] climate was WARMER in Roman and Medieval times than it is now," the British newspaper the Daily Mail reported last week, "and [the] world has been cooling for 2,000 years.". That and other articles suggest the current global warming trend is a mere blip when viewed in the context of natural temperature oscillations etched into tree rings over the past two millennia.
The tree rings do help fill in a piece of Earth's complicated climate puzzle. However, it is climate change deniers who seem to have misconstrued the bigger picture. Instead of using the width of trees' rings as a gauge of annual temperatures, as most past analyses of tree rings have done, Wilson (, a paleoclimatologist at the University of St. Andrews in Scotland and a co-author of the study) and his fellow researchers tracked the density of northern Scandinavian trees' rings marking each year back to 138 B.C. They showed that density measurements give a slightly different reading of historic temperature fluctuations than ring width measurements, and according to their way of reckoning, the Roman and medieval warm periods reached higher temperatures than previously estimated.
Sources:Yahoo
Incompetent people too ignorant to know about it
What Are Climate Change Skeptics Still Skeptical About?
Thursday, July 05, 2012
Discovery of Higgs Boson-like subatomic particle
On American Independence Day, July 4, physicists working in Geneva at CERN, the world’s biggest particle-physics laboratory, announced that they had found the Higgs boson. Like the uncovering of DNA’s structure by Francis Crick and James Watson in 1953, the discovery of the Higgs makes sense of what would otherwise be incomprehensible. Its significance is massive. Literally. Without the Higgs there would be no mass. And without mass, there would be no stars, no planets and no atoms. And certainly no human beings. Indeed, there would be no history. Massless particles are doomed by Einstein’s theory of relativity to travel at the speed of light. That means, for them, that the past, the present and the future are the same thing.
BOSON was named after an Indian Scientist !!!
The 'boson' in the Higgsboson particle, whose search and ultimate detection was one of the longest and most expensive in the history of science, owes its name to Satyendra Nath Bose who was an Indian Scientist. In 1924, the city-based physicist had sent a paper to Albert Einstein, describing a statistical model that led to the discovery of the Bose-Einstein condensate phenomenon. The paper laid the basis for describing the two classes of subatomic particles - bosons, named after Bose, and fermions, after Italian physicist Enrico Fermi.
Info on Satyendra Nath Bose
Info on Bose-Einstein condensate
Finding the Higgs, though, made looking for needles in haystacks seem simple. The discovery eventually came about using the Large Hadron Collider (LHC), a machine at CERN that sends bunches of protons round a ring 27km in circumference, in opposite directions, at close to the speed of light, so that they collide head on. The faster the protons are moving, the more energy they have. When they collide, this energy is converted into other particles (Einstein’s E=mc2), which then decay into yet more particles. What these decay particles are depends on what was created in the original collision, but unfortunately there is no unique pattern that shouts “Higgs!” The search, therefore, has been for small deviations from what would be seen if there were no Higgs. That is one reason it took so long. The LHC, sustained by a consortium that was originally European but is now global, cost about $10 billion to build.
The discovery puts the finishing flourish on the Standard Model, the best explanation to date for how the universe works—except in the domain of gravity, which is governed by the general theory of relativity. The model comprises 17 particles. Of these, 12 are fermions such as quarks (which coalesce into neutrons and protons in atomic nuclei) and electrons (which whizz around those nuclei). They make up matter. A further four particles, known as gauge bosons, transmit forces and so allow fermions to interact: photons convey electromagnetism, which holds electrons in orbit around atoms; gluons link quarks into protons and neutrons via the strong nuclear force; W and Z bosons carry the weak nuclear force, which is responsible for certain types of radioactive decay. And then there is the Higgs.
The Higgs, though a boson (meaning it has a particular sort of value of a quantum-mechanical property known as spin), is not a gauge boson. Physicists need it not to transmit a force but to give mass to other particles. Two of the 16 others, the photon and the gluon, are massless. But without the Higgs, or something like it, there is no explanation of where the mass of the other particles comes from.
For fermions this is no big deal. The Standard Model’s rules would let mass be ascribed to them without further explanation. But the same trick does not work with bosons. In the absence of a Higgs, the rules of the Standard Model demand that bosons be massless. The W and Z are not. They are very heavy indeed, weighing almost as much as 100 protons. This makes the Higgs the keystone of the Standard Model. Slot it in and the structure stands. Take it out and it topples. Little wonder that physicists were getting impatient.
How is Higgs particle created ? (Click to view larger image)
Courtesy: NyTimes Economist