News tagged with light intensity
Scientists move objects across meter-scale distances using only light (w/ Video)
(PhysOrg.com) -- For more than 40 years, scientists have been using the radiation pressure of light to move and manipulate small objects in space. But until now, the movements have always been restricted to ...
Sep 30, 2010 |
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Nano antenna concentrates light: Intensity increases 1,000-fold
(PhysOrg.com) -- Everybody who's ever used a TV, radio or cell phone knows what an antenna does: It captures the aerial signals that make those devices practical. A lab at Rice University has built an antenna ...
Sep 20, 2010 |
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Cantilever bends repeatedly under light exposure for continuous energy generation
(PhysOrg.com) -- With the goal to enable small electronic devices to harvest their own energy, researchers have designed a device that can convert light and thermal energy into electricity. When exposed to ...
Oct 05, 2010 |
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Extraordinary light enhancement technique proposed for nanophotonic devices
(PhysOrg.com) -- In a new study, scientists have shown that simply tailoring the nanoscale geometrical parameters of dielectric structures can result in an increase in the light intensity to unprecedented levels. Theoretically, ...
Nov 03, 2010 |
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Researchers discover mechanism that helps humans see in bright and low light
Ever wonder how your eyes adjust during a blackout? When we go from light to near total darkness, cells in the retina must quickly adjust. Vision scientists at Washington University School of Medicine in St. ...
Medicine & Health / Neuroscience
Oct 13, 2009 |
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Chandra finds nearest pair of supermassive black holes
(PhysOrg.com) -- Astronomers have used NASA's Chandra X-ray Observatory to discover the first pair of supermassive black holes in a spiral galaxy similar to the Milky Way. At a distance of 160 million light ...
Aug 31, 2011 |
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Tying the knot with computer-generated holograms: Winding optical path moves matter
In the latest twist on optical knots, New York University physicists have discovered a new method to create extended and knotted optical traps in three dimensions. This method, which the NYU scientists describe ...
Mar 15, 2011 |
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Suspects in the quenching of star formation exonerated
Supermassive black holes millions to billions times the mass of our Sun lie at the heart of most, maybe all large galaxies. Some of these power brilliantly luminous, rapidly growing objects called active galactic nuclei that ...
Oct 11, 2011 |
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Fruit fly larvae detect light via body's network of photoreceptors
(PhysOrg.com) -- New research in the U.S. has discovered that fruit fly larvae have a series of photoreceptors covering the body that can detect light even when their primitive "eyes" are covered or removed.
Nov 12, 2010 |
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A magnetic approach to lattices
(Phys.org) -- JQI experimentalists under the direction of Ian Spielman are in the business of using lasers to create novel environments for neutral atoms. For instance, this research group previously enticed ...
May 22, 2012 |
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A nanotech solution controlling the path of light can brighten up our lives
We want our electrical devices to have bright screens with low energy needs, so they can be used for a long time before recharge is required. Scientists are increasing the intensity of light by making nanometer ...
Jul 18, 2011 |
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Study says nocturnal ants have evolved night vision
(PhysOrg.com) -- Researchers studying the eyes of different Australian bull ants have found the first evidence of adaptation of visual structures within a single species to distinct light intensities.
Oct 06, 2010 |
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Polarized light pollution leads animals astray
Human-made light sources can alter natural light cycles, causing animals that rely on light cues to make mistakes when moving through their environment. In the journal Frontiers in Ecology and the Environment, a coll ...
Jan 07, 2009 |
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The quality of the tomato depends more on temperature than on natural light
A team from the Basque Institute for Agricultural Research and Development (Neiker-Tecnalia, Spain) has questioned the generally held belief that the quality of tomatoes depends primarily on their exposure to natural light ...
Mar 25, 2010 |
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Samsung Launches World's First RGB LED Data Projector
Samsung Electronics today announced the launch and availability of the world’s first RGB LED data projector with 1,000 ANSI lumens. With no lamp to replace, the SP-F10M has an LED light source that promises ...
Electronics / Consumer & Gadgets
Jun 25, 2010 |
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