News tagged with light intensity
A new generation of acoustic measurements
NPL scientists have made the first measurements of airborne acoustic free-field pressures using a laser technique based on photon correlation spectroscopy.
May 29, 2012 |
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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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Detecting clouds from both sides now
Researchers have developed a more precise method to detect the boundary between clouds and clear air, by exploiting the swinging motions of a weather balloon and its payload.
Space & Earth / Earth Sciences
Mar 13, 2012 |
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Colorful solar instrument treks east for a new career
(PhysOrg.com) -- One of the world's most colorful solar instruments is moving across country for a new life dissecting the chemistry of comets and stars.
Space & Earth / Space Exploration
Feb 01, 2012 |
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Early defoliation of Great Lakes wine grapes tested
Wine grape production in the Great Lakes Viticultural Region can be a challenging enterprise. Spring frost, winter injury, short and variable growing seasons, and cool, humid growing conditions subject grape ...
Dec 12, 2011 |
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The Tarantula glows with X-rays and infrared light
(PhysOrg.com) -- This spiderweb-like tangle of gas and dust is a star-forming region called 30 Doradus. It is one of the largest such regions located close to the Milky Way galaxy, and is found in the neighboring ...
Nov 11, 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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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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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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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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How plants counteract against the shade of larger neighbors
Plants that "lose the battle" during competitiveness for light because they are shaded by larger neighbours, counteract. They adapt by rapid shoot elongation and stretch their leaves towards the sun. The molecular basis of ...
Dec 17, 2010 |
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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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Keeping the daily clock ticking in a fluctuating environment: Hints from a green alga
Researchers in France have uncovered a mechanism which explains how biological clocks accurately synchronize to the day/night cycle despite large fluctuations in light intensity during the day and from day to day. Following ...
Nov 11, 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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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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