News articles tagged with 'light'
A smarter way to make ultraviolet light beams
— 2 Dec 2011 10:56 | TechnologyExisting coherent ultraviolet light sources are power hungry, bulky and expensive. University of Michigan researchers have found a better way to build compact ultraviolet sources with…
Strange new 'species' of ultra-red galaxy discovered
— 2 Dec 2011 10:29 | AstronomyIn the distant reaches of the universe, almost 13 billion light-years from Earth, a strange species of galaxy lay hidden. Cloaked in dust and dimmed by the intervening distance, even…
Earth's core deprived of oxygen
— 23 Nov 2011 19:46 | Geology and palaeontologyThe composition of the Earth's core remains a mystery. Scientists know that the liquid outer core consists mainly of iron, but it is believed that small amounts of some other elements…
Scientists invent long-lasting, near infrared-emitting material
— 21 Nov 2011 19:25 | TechnologyMaterials that emit visible light after being exposed to sunlight are commonplace and can be found in everything from emergency signage to glow-in-the-dark stickers. But until now,…
Scientists create light from vacuum
— 18 Nov 2011 17:04 | PhysicsScientists at Chalmers University of Technology have succeeded in creating light from vacuum - observing an effect first predicted over 40 years ago. The results were published in the…
New 'smart' material could help tap medical potential of tissue-penetrating light
— 16 Nov 2011 21:39 | ChemistryScientists are reporting development and successful initial testing of the first practical 'smart' material that may supply the missing link in efforts to use in medicine a form of…
Telescope ferrets out planet-hunting targets
— 9 Apr 2011 11:37 | AstronomyAstronomers have come up with a new way of identifying close, faint stars with NASA's Galaxy Evolution Explorer satellite. The technique should help in the hunt for planets that lie…
Rejuvenating electron microscopy
— 6 Apr 2011 15:49 | BiologyModifying a protein from a plant much favoured by science, researchers at the University of California, San Diego School of Medicine and colleagues have created a new type of genetic…
Transmission lines for nanofocusing of infrared light
— 4 Apr 2011 19:12 | TechnologyIn conventional optical instruments, light cannot be focused to spot sizes smaller than half the wavelength because of diffraction effects. An important approach to beat this diffraction…
Engineers create vibrant colours in vertical silicon nanowires
— 4 Apr 2011 18:36 | TechnologyEngineers may soon be singing, 'I'm going to wash that grey right out of my nanowires,' thanks to a colourful discovery by a team of researchers from Harvard University and Zena Technologies.…