News tagged with white light

Quantum dot white LEDs achieve record efficiency

Researchers have demonstrated nanomaterial-based white-light-emitting diodes (LEDs) that exhibit a record luminous efficiency of 105 lumens per watt. Luminous efficiency is a measure of how well a light source uses power ...

dateJul 12, 2018 in Nanophysics
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Experiments boost solar power

With global warming an ever-present worry, renewable energy – particularly solar power—is a burgeoning field. Now, two doctoral students in the School of Architecture & Design (Arc/D) have demonstrated methods of optimizing ...

dateJan 04, 2018 in Energy & Green Tech
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Image: Science from the moon's shadow

While total solar eclipses happen about once every 18 months somewhere on Earth, the Aug. 21, 2017, eclipse was rare in its long path over land. The total eclipse lasted about 90 minutes, from the time it first reached the ...

dateDec 12, 2017 in Space Exploration
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Image: Solar surface from hot to hottest

This sequence of images shows the Sun from its surface to its upper atmosphere all taken at about the same time on Oct. 27, 2017. The first shows the surface of the Sun in filtered white light; the other seven images were ...

dateNov 02, 2017 in Space Exploration
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