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| Mathematics & Physics articles |
Physicists transmit visible light through miniature cable
Physicists at Boston College have beamed visible light through a cable hundreds of times smaller than a human hair, an achievement they anticipate will lead to advances in solar power and optical computing.
CDF precision measurement of W-boson mass suggests a lighter higgs particle
Scientists from around the World, participating in the Collider Detector at Fermilab (CDF) collaboration at the Fermi National Accelerator Laboratory in Illinois announced 8 January, 2007 the world's most precise measurement by a single experiment of the mass of the W boson, the carrier of the weak nuclear force and a key parameter of the Standard Model of particles and forces.
Water theory is watertight, researchers say
There may be tiny bubbles in the wine, but not at the interface between water and a waxy coating on glass, a new study shows.
Ultra-dense optical storage on one photon
Researchers at the University of Rochester have made an optics breakthrough that allows them to encode an entire image's worth of data into a photon, slow the image down for storage, and then retrieve the image intact.
Origami lens slims high resolution cameras
Engineers at UC San Diego have built a powerful yet ultrathin digital camera by folding up the telephoto lens. This technology may yield lightweight, ultrathin, high resolution miniature cameras for unmanned surveillance aircraft, cell phones and infrared night vision applications.
Noise echoes in cell communications
Can't hear? Turn up the white noise, says a team of Rutgers-Camden professors who have produced a mathematical explanation for the benefits of noise. Their findings could lead to major improvements in hearing aid technology.
Fermions do not travel together an expected effect of quantum theory has now been demonstrated
Fermions tend to avoid each other and cannot "travel" in close proximity. Demonstrated by a team at the Institut d'optique (CNRS/Université Paris 11, Orsay-Palaiseau), this result is described in detail in the January 25, 2007 issue of Nature. It marks a major advance in our understanding of phenomena at a quantum scale.
Physicists find way to 'see' extra dimensions
Peering backward in time to an instant after the big bang, physicists at the University of Wisconsin-Madison have devised an approach that may help unlock the hidden shapes of alternate dimensions of the universe.
Jila measurements recast usual view of elusive force
Physicists at JILA have demonstrated that the warmer a surface is, the stronger its subtle ability to attract nearby atoms, a finding that could affect the design of devices that rely on small-scale interactions, such as atom chips, nanomachines, and microelectromechanical systems (MEMS).
Scientists find why conductance of nanowires vary
A Georgia Tech physics group has discovered how and why the electrical conductance of metal nanowires changes as their length varies. In a collaborative investigation performed by an experimental team and a theoretical physics team, the group discovered that measured fluctuations in the smallest nanowires' conductance are caused by a pair of atoms, known as a dimer, shuttling back and forth between the bulk electrical leads.
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Quantum hall effect observed at room temperature
Using the highest magnetic fields in the world, an international team of researchers has observed the quantum Hall effect – a much studied phenomenon of the quantum world – at room temperature.
New accelerator technique doubles particle energy in just one meter
Imagine a car that accelerates from zero to 60 in 250 feet, and then rockets to 120 miles per hour in just one more inch.
Engineers create new mirror for high-performance optics
Engineers at the University of California, Berkeley, have created a new high-performance mirror that could dramatically improve the design and efficiency of the next generation of devices relying upon laser optics, including high-definition DVD players, computer circuits and laser printers.
Medieval islamic architecture presages 20th-century mathematics
Intricate decorative tilework found in medieval architecture across the Islamic world appears to exhibit advanced decagonal quasicrystal geometry -- a concept discovered by Western mathematicians and physicists only in the 1970s and 1980s. If so, medieval Islamic application of this geometry would predate Western mastery by at least half a millennium.
Coldest lab in chicago to simulate hot physics of early universe
Cheng Chin will make a vacuum chamber in his laboratory the coldest place in Chicago in order to simulate the impossibly hot conditions that followed the big bang during the earliest moments of the universe.
Researchers create world's first ideal anti-reflection coating
A team of researchers from Rensselaer Polytechnic Institute has created the world's first material that reflects virtually no light. They describe an optical coating made from the material that enables vastly improved control over the basic properties of light. The research opens the door to much brighter LEDs, more efficient solar cells, and a new class of "smart" light sources that adjust to specific environments.
Delicate relation between single spins
Probing the magnetic interaction between single atoms is no longer a dream. Using a scanning tunnelling microscope, the interaction of the spins of two neighbouring cobalt atoms adsorbed at a copper surface has been measured as a function of their distance with atomic precision. This development opens up new possibilities to probe the quantum nature of magnetic phenomena and to explore the physical limits of magnetic data storage.
Fluid dynamics works on nanoscale in real world
In 2000, Georgia Tech researchers showed that fluid dynamics theory could be modified to work on the nanoscale, albeit in a vacuum. Now, seven years later they've shown that it can be modified to work in the real world, too – that is, outside of a vacuum. The results appear in the February 9 issue of Physical Review Letters (PRL).
New form of matter-antimatter transformation observed for first time
Whilst science fiction toys effortlessly with anti-matter, in reality it can be very hard to produce, so researchers around the world are celebrating a new break through in this area. For the first time, scientists using the BaBar experiment at the Stanford Linear Accelerator Center (SLAC) have observed the transition of one type of particle, the neutral D-meson, into its antimatter particle - a process known as 'mixing'. The new observation will be used as a test of the Standard Model, the current theory that best describes the entire universe's luminous matter and its associated forces.
A single-photon server with just one atom
Every time you switch on a light bulb, 10 to the power of 15 (a million times a billion) visible photons, the elementary particles of light, are illuminating the room in every second. If that is too many for you, light a candle. If that is still too many, and say, you just want one and not more than one photon every time you press the button, you will have to work a little harder.
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| Quotes | Ive always wanted to be a scientist. That way, I could get a bunch of grants and do research into whether money can really buy happiness.
Kyannke.
Ive always wanted to be somebody, but I see now I should have been more specific.
Lily Tomlin |
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