United Kingdom scientists discovered the dark side of bright light exists ~ ~ _ views the world _ L cellular flipped on steep roasting

{Clasping envy Waterloo Road * translated dream zhenjun coloured border} Beijing time on 21 February, according to foreign media reports, the United Kingdom's scientists recently stated that they had recently discovered in experiments in the light of another property, i.e. bright light but also the dark side. Recently, the United Kingdom, University of Glasgow and Bristol University's researchers discovered the optical properties of another, or more accurately, light the darkness. The researchers explained that natural light into the darkness in the domain, these dark line formed a look like light spots optical vortex. Study Group on this phenomenon has been modeling and found the dark line shows the characteristic with Brown (arbitrary) of irregular fragments properties and characteristics of these optical Vortex has helped scientists with different physics of versatility. Many people have noticed the laser speckle phenomena, that is, when a consistent jump off a monochrome laser on rough surfaces, will let the surface looks is patchy. These spots are very different from the rough surface reflection of highly coherent light waves superposition of interference in the graphic. Sometimes, when the viewer moves relative to the surface, this dot graphics even looks light flashes. In the latest issue, published in physical review letters, United Kingdom researchers detail they conducted by numerical simulation and experimental, as well as the development process of superposition model, this superposition can produce dark optical vortex. The experiment, they will have a diameter of 10 mm of He-Ne laser beam through a screen made of frosted glass, produced the laser dot. By using interference meter measure these superposition, scientists have mapped the three-dimensional optical Vortex, and found 2 kind of vortex. Representing approximately 73% dark swirl of countless Vortex lines completely filtered out the beam, and the remaining 27% of dark swirl in the Vortex line to return to their starting point the small region, forming a loop. In further exploring the dark lines, researchers found the dark line shows the scale invariant characteristics. In other words, no matter how many times you zoom, the Vortex looks no change — they are Fractals. Then, researchers Kevin-Heller lang said, when he and colleagues suspect Vortex lines are not displayed when irregular fragments properties, they are surprised to find this kind of irregular fragments of a characteristic brown. He claims that scientists hope exploring free optical domain topology, such as the spiral wire tying or frequency of the connection. Interestingly, researchers have noted, these properties optical Vortex (Vortex lines in sing ring ratio and scale invariance) is very similar to the cosmic strings property. According to the cosmic strings that model in the early universe, cosmic strings are very slim but in time and space is very thick one dimensional topological defects and galaxy formation. Scientists think that this similarity is probably just a coincidence, they said, these properties should be common to all areas of optics. Light can be divided into artificial light and natural light. We were able to see an objective world-changing scenes banboluli, because eyes receive objects emitting, reflection or scattering of light. Strictly speaking, it is the human eye can observed a radiation. There are experimental proof light is electromagnetic radiation, this part of the electromagnetic waves of a wavelength range of about Red to violet 0.77 0.39 microns. Wavelength in 0.77 micron to 1000 microns of electromagnetic wave called "infrared". Following the 0.39 micron to 0.04 Micron or so called "UV". Infrared and ultraviolet cannot cause vision, but you can use optical instruments or photography to measure and detect the presence of light-emitting objects. Therefore, in the light of the concept in optics can also be extended to the fields of infrared and ultraviolet rays, and even x-rays are considered to be light, visible light spectrum is only part of the electromagnetic spectrum. Source: SINA ◎ □ ⌒ ※ 1 links necessary ∏ ¡ø necessary ∩ lingbo fairy would would would would would feel necessary to a dust would buff. psychological long celebrity stars blocheer military lamb http://blog.sina.com.cn/aimuqin ∽ romantic tixiang poetry ∽ studies music media and editorial http://blog.sina.com.cn/langman1tixiang2shishe * internal * body-Kai to http://blog.sina.com.cn/jianmeiqinengqigong humor art photography fashion men and women in social science http://blog.sina.com.cn/yimeng1langman90nian