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New laser technology could improve how scientists study molecules
We use lasers for a lot of things, from cutting metal to improving eyesight, but lasers have their limitations. One major holdup is that they can only emit certain types of light. Researchers have gotten around this particular limitation by using what are known as optical parametric oscillators, which allow regular laser light to be converted into other wavelengths of light that may be useful for certain areas of research. One example is studying how molecules behave. However, these gadgets have their limitations too. They typically have weak outputs and they require extreme stability and precision, making them hard to use outside of highly controlled lab environments. But researchers at Stanford may have found a way around this issue and their work could make these systems more efficient and easier to use.
Harvard creates a material that lets light go 'infinitely fast'
Researchers at Harvard University announced recently that they had successfully developed a means of manipulating light at the nanoscale, which could lead to photonic-based (rather than electronic) telecommunications. Think, ubiquitous fiber optics. The team reportedly developed an on-chip metamaterial made from silicon pillars embedded in polymer and wrapped in gold film that exhibits a refractive index of zero. In English, that means that the phase of light passing through this material can travel infinitely fast without violating the known laws of physics.
Galaxy cluster research supports Einstein's Theory of Relativity on a cosmic level
In one small win for Einstein, one giant win for mankind, scientists at the Niels Bohr Institute have proved his General Theory of Relativity on a cosmic scale through their research of large galaxy clusters. Accordingly, the clusters -- which are the largest known gravity-bound objects -- have such a strong pull that they should cause light to "redshift," or proportionally increase in wavelength, shifting towards the red end of the visible spectrum. To test it, researchers measured beams from 8,000 clusters, revealing that they do indeed cause a change in light's wavelength, supporting Einstein's theory to a T. One good turn deserves another, right Albert? Armchair cosmologists can hop on over to the source link to learn more.
New developments in atomic clock technology beat accuracy records, may inspire Ke$ha's next hit
According to a recent Penn State study that uses a new way to calculate time-telling precision, the CsF2 cesium-based atomic clock at the UK's National Physical Laboratory is almost twice as accurate as originally thought -- meaning it will only gain or lose one single second over the course of 138 million years. This atomic clock isn't the only competitor for best-in-show, as researchers at the University of Tokyo have also announced a new record, claiming their optical lattice atomic clock observes atoms a million times faster than a traditional atomic clock -- achieving accuracy up to 18 digits in a one second measurement. Although researchers say the technology would gain or lose a second significantly faster than the cesium-based variety (31.7 million years), it could change the way scientists perceive time and space, giving us new insights into fundamental constants of physics. "Until now, clocks have been thought of as tools for sharing common time. But with clocks like this, conversely, we can understand that time passes at different speeds, depending on the time and place a clock is at," said Hidetoshi Katori of the University of Tokyo. Of course, both atomic clocks can help us stay timely, but they also have practical applications for everything from deep-space networking, to predicting earthquakes and GPS navigation. With this type of accuracy, looks like none of us will be getting away with showing up late to work anymore. Check out a video about the optical lattice clock after the break.
WoW Moviewatch: Redshift: Interlude
Redshift: Interlude is a prequel to the Redshift movie we posted for you a few days ago. Even though it has one character in common with the earlier story, the high elf Aislynn, it's really a story all its own. This Redshift series is shaping up to be about the ways in which predictions of the future influence the actual progression of events. At the end of this movie, there's even a hint of a future Redshift episode about a night elf, which looks interesting. The maker of this movie, Sedrin, also did the astounding music video "Frame of Mind." He has an uncanny talent for making serious machinima credible and believable.For those who are interested, "redshift" is also a scientific term that denotes the way in which stars traveling away from the observer are seen to be a bit redder than they actually are, because as they move away, the wavelength of the light they emit increases. This is just like the Doppler Effect, in which a car moving away from you has a deeper sound than a car moving towards you. In this story, though, it may be that "redshift" just refers to the way visions of the future seem to have this red tint over them -- yet on the other hand, perhaps there's something symbolic there too, that no matter how you look into the future, it will always be beyond your grasp.Previously on WoW Moviewatch...
Researchers develop metamaterial with negative refractive index
We've got next-to-invisible objects and cameras with ridiculously large sensors, and thanks to a team of brilliant researchers over in Germany, now we've got "an exotic material with a negative refractive index for visible light." Gunnar Dolling and his colleagues at the University of Karlsruhe in Germany have created a metamaterial with layers of silver sandwiching a thin sliver of nonconducting magnesium fluoride on a glass sheet, and once an array of square holes were etched in, his tests showed that the "structure had a negative refractive index of -0.6 for light with a wavelength of 780-nanometers," besting the previous record of 1,400-nanometers. While the scientific babble may not mean much to you, the long and short of it is that this discovery could "lead to further breakthroughs in invisibility cloaks, which could hide objects from the human eye" and make escaping your troubles quite a bit easier. Moreover, the technology could be used in "superlenses" to see details "finer than the wavelength of visible light," but Dolling is reportedly more interested in studying the effects of his discovery than attempting to build any mystical devices, which is probably for the good of mankind, anyway.[Via Slashdot]
