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The traditional fiber optic is virtually reduced to transmitting light through a narrow cylindrical glass core. However, this particular design imposes certain restrictions to sending light signals over great distances, such as the fact that the glass fiber optic is highly sensitive to powerful light signals, which c... |
18 January 2008
06:27 GMT |
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Let's not fool ourselves, invisibility cloaks have been built and they do exist; they don't work exactly as they should is another thing. However, Duke University researchers said they hadn't done enough to improve the technology and decided to test some acoustic invisibility devices before resuming th... |
18 January 2008
03:53 GMT |
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We are consuming the fossil fuels at a rate that will deplete them by the end of this century. For a long time, it has been thought that atomic energy would be a solution, but the Cernobyl event warned about the immense risks coming with this source of energy. Solar energy would be a more secure and no-cost alternati... |
15 January 2008
06:24 GMT |
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Black holes have such extreme gravitational fields that anything falling beyond the event horizon is ultimately destined to hit the point-like singularity, where it will probably remain forever. Believe it or not, but stable orbits around black holes are possible. Just because an object has extreme gravitational fiel... |
15 January 2008
04:33 GMT |
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We are eager to hamper the global warming. Using energy-saving light bulbs we would consume just one quarter of the energy of conventional light bulbs, saving 2,000 times their weight in greenhouse gases (mainly carbon dioxide), worthing their five times higher price. Some complain the fluorescent bulbs are either "c... |
7 January 2008
03:16 GMT |
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An intense burst of gamma ray radiation, possibly coming from the Andromeda galaxy, has been detected in February last year, but, while trying to detect the gravitational wave produced by the event which triggered the radiation burst, scientists found there isn't one, thus ruling out the possibility of a mergin... |
5 January 2008
04:39 GMT |
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Do you want to save the Earth? Then, use energy-saving light bulbs: they consume one quarter of the energy of conventional light bulbs. They save 2,000 times their weight in greenhouse gases (mainly carbon dioxide). This would worth their five times higher price. But watch out: this could bring you a severe headache!... |
4 January 2008
05:33 GMT |
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Musicians who use pedal boards just know how nasty it is to adjust your tone on dark stages, especially when you're in need for a minor change in your tone and can't reach instantaneously to the right knob... Myself, I play either a guitar combo and some pedals before it, or a powered rack and cabinet and t... |
3 January 2008
05:03 GMT |
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1.About 80 % of what we perceive comes through the eyes. Our memories are made 80 % by images. The eye comes with information about the depth, distance, shape, color and movement of the objects. 2.The human eye is one of nature's wonders and functions like a photo camera. Only that is much more complex. An adult... |
27 December 2007
16:56 GMT |
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You know how sometimes somebody talks to you, but they're saying so much boring stuff that you eventually start to ignore them? The truth is that we have been unintentionally sending radio signals into space for the last century, out of which seven decades of television transmissions, meaning that we have covere... |
19 December 2007
03:14 GMT |
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Beetles make the most numerous group of insects. They form the order Coleoptera ("sheathed wing") because of their elytras (thickened outer pair of wings). 25% of all species on Earth are beetles and they make for 40% of all described insects but there may be at least 5 million undescribed beetle species. They live a... |
18 December 2007
14:21 GMT |
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Ivolgamus' promising puzzle platformer for PSP owners, Fading Shadows has come to our attention again, with fresh screens straight from the European developer. Fading Shadows has players controlling a beam of light exploiting the state-changing abilities of the orb to overcome challenges within a total of 40 sin... |
15 December 2007
11:50 GMT |
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OK. So, you're walking alone through the desert as a result of an accident and you are trying to get back to civilization. Suddenly you observe a water-like feature a few hundred meters in front of you and you don't know if what you see is real. You have three possibilities. One, you are dillusional as a re... |
14 December 2007
05:43 GMT |
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In nature, only fireflies and marine creatures (like jellyfish, abyssal squids and fish, and others) are fluorescent, but now, after researchers managed to obtain fluorescent pigs, rabbits, butterflies and tank fish, based on genes from these creatures, now we have fluorescent cats, too. This was achieved by a South ... |
13 December 2007
03:17 GMT |
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There are probably more myths circling around about Lasers, than about any other invention of the 20th century. However a very small number of people actually know what a Laser is or how it works, though they are currently being used in many domains such as medicine, physics and technology applications.A Laser device... |
12 December 2007
03:19 GMT |
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Console owners are simply in love with their media center. It's a fact, otherwise they wouldn't try pimping them out all the time. Remember yesterday's Darth Vader Wii case mod? Well, what you're about to see today beats them all.The Playstation 3 Darklite Integrated Lightbar truly makes your PS3 ... |
11 December 2007
07:08 GMT |
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Life on Earth is fueled by the 'relationship' between plants and sunlight. A new research made on Arabidopsis, a common model plant employed in researches and published in Nature "has significantly advanced our understanding of how plant responses to light are regulated, and perhaps even how such responses ... |
26 November 2007
02:49 GMT |
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New devices operating in the terahertz wavelength of the light spectrum could change the way security and medical detections are usually being made. Electromagnetic wave sent as terahertz frequencies, also known as T-ray operate in the 300 gigahertz to 3 terahertz domain close to the edge of the microwave spectrum, o... |
23 November 2007
03:05 GMT |
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The "NewTon" project represents a research activity in the domain of photonic crystals which will have as a result the production of the first functional all-optical components by the end of the next year. Photonic crystals will be produced to create new components that will replace those using electricity to transmi... |
21 November 2007
06:08 GMT |
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Researchers studying the properties of metamaterials have found a way to lower the speed a beam of light is traveling at, by separating it in its constituent colors, creating some kind of a trapped rainbow. Light travels through space, at a speed of about 300,000 kilometers per second and is the maximum speed in the ... |
15 November 2007
06:28 GMT |
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There are infrared glasses, protective ones, glasses that improve your vision and even 'over-the-top' glasses. But what about glasses that make you sleep in a nice and easy way? A team at John Carroll University, making investigations in its Lighting Innovations Institute, has come up with an affordable acc... |
14 November 2007
04:26 GMT |
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The cataract represents an opacity of the crystallin lens produced by the accumulation of insoluble proteins. A teenager's lens contains 3 % of those proteins, while in a person in his/her 80's it can form 40 % of the proteins. This is the main cause of blurred vision and blindness worldwide. Today, in 10 m... |
12 November 2007
06:20 GMT |
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Today we spend more holidays in sunny exotic places, but this increased exposure to sun can cause skin cancer, especially amongst light-skinned racial types, due to ultraviolet-B (UVB) radiation. And here comes the controversial and at the same time praised coffee. Coffee consume could cut the risk of skin cancer by ... |
9 November 2007
14:06 GMT |
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Dogs have evolved from wolves. And wolves are nocturnal predators; you can see that very well by analyzing the behavior of stray dog packs. The same dogs that seem very quiet and calm during the day will attack any human passing through their "territory" at night. Indeed, at night or in a forest, eyesight does not he... |
9 November 2007
06:08 GMT |
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Sun lovers and cheese eaters got it: they will live longer than others. A new research published in the American Journal of Clinical Nutrition found that vitamin D could act against aging and inflammation. The study made by a British-American team on over 2,100 female twin pairs aged 19-79 showed that higher vitamin ... |
9 November 2007
05:31 GMT |
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While analyzing 2004 satellite images of the poles above the Antarctic, researchers stumbled upon a new type of aurora. Better known are the conventional aurora borealis in the Arctic and aurora australis in the Antarctic, appearing like curtains of brightly colored light in the polar atmosphere. The light is emitted... |
8 November 2007
03:17 GMT |
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The Solar Impulse Project plans to have an airplane take off and fly autonomously, day and night, propelled only by the energy of the sunlight, so far an unachievable goal without pushing back the current technological limits in all fields. During the day it will be powered by highly efficient solar cells that will b... |
7 November 2007
11:07 GMT |
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Scientists have been recently researching the concept of microchips that manipulate light, not electricity. MIT team shows how chips that have tiny machines with moving parts, are powered and controlled by the light they manipulate. The theory developed, could produce "smart" optical microchips, that manipulate diffe... |
2 November 2007
09:59 GMT |
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By creating a brain like a rainbow, scientists were able to study the brain's functions like never before. The "Brainbow", developed at Harvard University, is a genetic engineering that has inserted fluorescence genes from coral, jellyfish and bacteria, making mice brains shine in a curious array of colors betra... |
1 November 2007
06:40 GMT |
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Jellyfish and their relatives, the corals, have been the only animals known to produce fluorescence on their own, by synthesizing fluorescent proteins. Other light-emitting animals, like abyssal fish and squids, rely on fluorescent bacteria. Fluorescent proteins have found a wide array of applications, from scientifi... |
31 October 2007
06:29 GMT |
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90 % of the information we get about our environment comes through our eyes. Humans are visual beings. But how light turns into visual sensations is hard to explain. A new research published in Neuroscience sheds light on how the human and primate retinas turn light into signals going to the brain. The team funded by... |
30 October 2007
08:08 GMT |
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The steel scalpel is rapidly disappearing from the surgeons' arsenal of instruments. Laser now performs from cosmetic to brain surgery, but the technique remains mysterious - we know what it does, but we don't know why it does it. This is exactly the question to which a new research - published online in Ph... |
29 October 2007
07:42 GMT |
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The LED or Light-Emitting Diode was first discovered in the early 20th century, when various scientists from all over the world, working in similar science areas, noticed that a semiconductor junction could produce light when an electric current was applied. A LED emits incoherent narrow-spectrum light when electrica... |
29 October 2007
04:22 GMT |
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What's the link between insects and solar cells? Bugs hold the secret - improved photocells.Peng Jiang, an assistant professor of chemical engineering at the University of Florida, gets his inspiration from the eyes of moths and the wings of cicadas in developing new anti-reflective and water-repellent coatings,... |
24 October 2007
07:30 GMT |
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You may be turned on by the image of Scarlet Johanson naked, but others have much weirder fantasies. The light of the silvery moon induces such an arousal amongst corals that soon the sea water gets flooded by coral eggs and sperms that turn the water milky. Those pervert astronomers...The connection between the moon... |
19 October 2007
06:53 GMT |
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A solution reminding us of the "Armageddon" movie and high-skilled drillers like Bruce Willis would help only as plan B. In fact, scientists are focusing on flying mirrors to save the Earth from a catastrophic asteroid collision. No less than 5,000 mirrors would be necessary to focus a sunlight fascicle on to the ast... |
8 October 2007
05:45 GMT |
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This is like a sci-fi movie ("Total Recall" is the first example that comes to my mind) scene becoming reality, making one of our naughty dreams come true! While our regular sun glasses help us take quick peeks at the hot girls around us without them even noticing it (or so we like to think), this new technology brea... |
5 October 2007
14:06 GMT |
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Being birdbrained can sometimes suggest sheer intelligence. In lab tests, the New Caledonian crow outperformed even apes. But new ultralight video cameras attached to their tail feathers allowed the researchers to follow the behavior of the highly intelligent tool-users in the wild. The first-of-its-kind research dis... |
5 October 2007
05:19 GMT |
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Humans are not made for traveling during nighttime: around 42% of fatal car crashes happen at night, taking into consideration that at this time there is 60% less traffic. There's little visual acuity and field of vision at night provided by illumination from the headlights. Now a team at the Department of Compu... |
28 September 2007
04:10 GMT |
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They may look like little living lanterns that bestow a fairytale atmosphere on rural landscape during summer months, but a new research made at Tufts University has found a dark side behind the magic show of the fireflies. The researchers found that even if fireflies waste little energy to produce the flash signals,... |
26 September 2007
04:11 GMT |
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One day Harry Potter's magic could be child's play and people could wear lightweight, magical cloaks, the result of high-performance from the latest technologies rendering them invisible. A Swedish/Chinese team led by Zhichao Ruan, Min Yan si Curtis W. Neff, has made a theoretical analysis of a column-shap... |
10 September 2007
04:49 GMT |
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The market for computer and home entertainment displays is always looking for higher definitions, less energy consumption, easier setup and better overall image quality. Well, a Canadian research team may have the answer to all the problems encountered by the display industry so far, as their display prototype brings... |
24 August 2007
10:53 GMT |
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Data transferring speeds inside modern day computer devices is locked at the speed of the electric current that powers those circuits. As the speed of the current can not be easily increased since the circuits become smaller and smaller, another way to increase the data rate would be to use light as a transferring me... |
23 August 2007
11:22 GMT |
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This is a utopia turned reality: seeing inside opaque materials. Dutch researchers said that by making wavefronts that invert the diffusion of light, they can focus coherent light through opaque scattering materials. This could significantly improve spectroscopy in scattering media and metamaterials. "Light propagati... |
21 August 2007
06:52 GMT |
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Eager beavers, hurry up to catch the last total lunar eclipse for 2007. It will be witnessed on Tuesday Aug. 28 and will be the second for this year after the one on March, 3.The eclipse will start at 8:51 a.m. UT (Universal Time), and the total eclipse will last from 9:52 a.m. UT to 11:22 a.m. UT. By 12:23 p.m. UT,... |
20 August 2007
13:56 GMT |
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Quantum computers are much faster than their traditional counterparts just because of their fundamentally different architecture and so they are able to solve complex problems in less time than a normal computer. Some tasks that require a lot of computational power and are nowadays taking more and more time to finish... |
20 August 2007
10:19 GMT |
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We are all living in a darker or lighter shadow of someone and we all brag about how well we know our friends. Who can say though that s/he is familiarized with the shadow (or shadows?) of even our best friends - not to talk about our enemies'. I think no one ever paid enough attention to the shadows of one'... |
9 August 2007
07:23 GMT |
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When cruising in your car, a police laser radar can easily measure your speed and send the ticket to your door, probably along with a picture showing your big grin at 160 km/h (100 mph). But when it comes to observing particles traveling at 1/3 the speed of light - 100,000 km/s - things get a bit complicated.Even the... |
19 July 2007
11:17 GMT |
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Seeing is not all about light, as sounds often produce accurate images of what light alone can't show us. Many applications use sound as imaging technique, like radars, sonars, echographs and telecommunication devices. Processing acoustic signals has just become more efficient with a new imaging algorithm that ... |
17 July 2007
05:48 GMT |
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Solar cells are regarded as one of the key technologies towards a sustainable energy supply and have already found many applications, mostly in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth-orbiting satellites and space probes.Recently they have become mo... |
13 July 2007
05:13 GMT |
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