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University of Pennsylvania Scientists Move Optical Computing Closer to Reality
Scientists at the University of Pennsylvania have theorized a way to increase the speed of pulses of light that bound across chains of tiny metal particles to well past the speed of light by altering the particle shape. view more (2008-08-20)
Duke team explains a longtime visual puzzler in new way
A team of neuroscientists at Duke University Medical Center has suggested an entirely new way to explain a puzzling visual phenomenon called the flash-lag effect. view more (2008-10-14)
Fishing in the dark
Nanotechnology is a relatively new scientific field that holds immense promise for the future. A nanometer is one millionth of a millimeter, and nanoparticles form the basis of completely new materials for pharmaceutical, cosmetic, electronic and optical applications. The size and structure of the particles are decisive in regulating the optical,... view more... (1999-09-03)
RC-LEDs - Super-fast light sources suitable for data transfer
Resonance-cavity light-emitting diodes (RC-LEDs) are a new type of light source which produces very intense light from quantum wells located in a microcavity. As light sources, RC-LEDs are classified as something between laser diodes and conventional light-emitting diodes (LEDs). The advantages of RC-LEDs compared with conventional LEDs include a... view more... (2000-02-25)
Blue light used to harden tooth fillings stunts tumor growth
A blue curing light used to harden dental fillings also may stunt tumor growth, Medical College of Georgia researchers say. view more (2008-06-25)
Skid Marks in the Galaxy - Astronomers localise galactic particle accelerator
Radio galaxies are amongst the most luminous celestial objects - however, they mainly emit radio waves, not light. These occur when electrically charged particles travelling at almost the speed of light are slowed down, thereby losing energy. Until recently it was not known exactly where the particles reach such high speeds. A group of scientists... view more... (2002-10-16)
Radiation flashes may help crack cosmic mystery
Faint, fleeting blue flashes of radiation emitted by particles that travel faster than the speed of light through the atmosphere may help scientists solve one of the oldest mysteries in astrophysics. view more (2007-12-04)
Ambient light influences the evolution of colour signals
In light-contrasted ecosystems, ambient light and background colours influence the evolution of animal coloration. Because maximal conspicuousness is achieved for signals which are rich in the colours of ambient light but poorly reflected by background, different signals will be cryptic or conspicuous at different heights in tropical rainforest.... view more... (2004-03-18)
Elderly women have better mental ability than men, despite less formal education
Elderly women have a better mental function than men despite their lower level of formal education, conclude Dutch researchers in the Journal of Neurology, Neurosurgery and Psychiatry. These findings challenge the view that a limited formal education is associated with lower mental ability and suggest that biological differences between men and... view more... (2001-06-14)
A brand new Microcar
The basque technological centre TEKNIKER has developed a brand new microcar to test all its capabilities in the micromanufacture. It is driven by an electric motor, the smallest in the market with an external diameter of 1.9 mm and longitude of 5 mm, a stator coil wound with 30 µm diameter wire and a rotor with permanent magnets. This micromotor... view more... (2004-07-29)
What determines the speed at which birds fly?
Aerodynamic scaling rules that explain how flight varies according to weight and wing loading have been used to compare general speeds of a wide range of flyers, from the smallest insects to the largest aircraft. view more (2007-07-17)
Toward better solar cells: Chemists gain control of light-harvesting paths
University of Florida chemists have pioneered a method to tease out promising molecular structures for capturing energy, a step that could speed the development of more efficient, cheaper solar cells. view more (2009-10-09)
Using Life's Building Blocks to Control Nanoparticle Assembly
Using DNA, the molecule that carries life's genetic instructions, researchers at the U.S. Department of Energy's Brookhaven National Laboratory are studying how to control both the speed of nanoparticle assembly and the structure of its resulting nanoclusters. view more (2007-08-23)
Quantum light beams good for fast technology
Australian and French scientists have made another breakthrough in the technology that will drive next generation computers and teleportation. view more (2007-08-27)
New NIST method improves accuracy of spectrometers
Measurements of the intensity of light at different wavelengths can be made more accurately now, thanks to a new, simple method for correcting common instrument errors. view more (2005-06-17)
UK researchers aim to create black holes in the lab
Physicists in the UK are planning pioneering experiments to create tiny, artificial black holes in the laboratory which will be able to suck in light or sound waves. The researchers hope that the desk-top black holes will provide important information about the fundamental behaviour of matter and energy and help to resolve some of the apparent... view more... (2001-01-19)
Thousands of cold anti-atoms produced at CERN
An international team of physicists working at the Antiproton Decelerator (AD) facility at CERN has announced the first controlled production of large numbers of antihydrogen atoms at low energies. After mixing cold clouds of trapped positrons and antiprotons - the antiparticles of the familiar electron and proton - under closely monitored... view more... (2002-09-18)
Bright idea illuminates LED standards
The lack of common measurement methods among light-emitting diode (LED) and lighting manufacturers has affected the commercialization of solid-state lighting products. view more (2008-11-26)
Livermore researchers find
With the exception of lasers and free-electron lasers, there hasn't been another fundamental way to produce coherent light for close to 50 years. view more (2006-01-16)
Variable physical laws
Physical quantities such as the speed of light, the gravitational constant and the electron mass are believed to be the same independent of where and when they appear in the universe. view more (2006-06-12)
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