The brightest hues in nature are produced by tiny patterns in, say, feathers or scales rather than pigments. These so-called "structural colors" are widespread, giving opals their fire, people their blue eyes, and peacocks ...
Archaeology
Nov 15, 2011
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Falling costs for solar power have led to an explosive growth in residential, commercial and utility-scale solar use over the past decade. The levelized cost of solar electricity using imported solar panels – that is, ...
Energy & Green Tech
Jan 26, 2018
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Chinese researchers have succeeded in transferring gallium nitride (GaN) light-emitting diodes (LEDs) grown on a layer of silicon to a layer of copper.
General Physics
Jun 14, 2012
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If you happened to be looking at the sky in Europe on a cold night on February 5, 1993, there is a chance you could have seen a dim flash of light. That flash came from a Russian space mirror experiment called Znamya-2.
Astronomy
Jan 12, 2024
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A 5 m-diameter antenna, designed for orbital operations, seen after a test deployment. Large reflectors are increasingly required for telecommunications, science and Earth observation missions.
Space Exploration
Nov 24, 2016
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This prototype 2.6-m diameter metal-mesh antenna reflector represents a big step forward for the European space sector: versions can be manufactured to reproduce any surface pattern that antenna designers wish, something ...
Space Exploration
Sep 18, 2020
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Like a cowboy at a rodeo, NASA's newest Earth-observing satellite, the Soil Moisture Active Passive (SMAP), has triumphantly raised its "arm" and unfurled a huge golden "lasso" (antenna) that it will soon spin up to rope ...
Space Exploration
Feb 27, 2015
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The concrete for the first MeerKAT antenna foundation was poured yesterday at South Africa's SKA site in the Karoo. This is the first of 64 similar foundations that will be constructed for this telescope over the next nine ...
Astronomy
Aug 16, 2013
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A systematic study of a simple and general structure for on-chip semiconductor lasers by A*STAR researchers sets the scene for much broader application of integrated semiconductor lasers beyond conventional silicon-based ...
Optics & Photonics
Dec 22, 2017
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The French energy group Areva said Wednesday that it would build the biggest concentrated solar power installation in Asia for Reliance Power of India.
Energy & Green Tech
Apr 12, 2012
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