Energy & Green Tech
A literal "trick of the light" can detect imperfections in next-gen solar cells, boosting their efficiency to match that of existing silicon-based versions, researchers have found.
Apr 8, 2020
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212
Energy & Green Tech
There may be many overlooked organic and inorganic materials that could be used to harness sunlight underwater and efficiently power autonomous submersible vehicles, report researchers at New York University. Their research, ...
Mar 18, 2020
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40
Engineering
What if solar cells worked at night? That's no joke, according to Jeremy Munday, professor in the Department of Electrical and Computer Engineering at UC Davis. In fact, a specially designed photovoltaic cell could generate ...
Jan 30, 2020
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1394
Engineering
Imagine a device that can sit outside under blazing sunlight on a clear day, and without using any power cool things down by more than 23 degrees Fahrenheit (13 degrees Celsius). It almost sounds like magic, but a new system ...
Oct 30, 2019
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1118
Machine learning & AI
Reconstructing lost art work just got a lot more interesting now that artificial intelligence experts know how to leverage technology as an art learning tool.
Engineering
A hot plant is an early warning sign of an under-watered, unhealthy plant, which makes monitoring crop temperatures a priority for many farmers. But to do so, they need the right equipment. Infrared cameras can detect heat ...
Aug 1, 2019
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Hi Tech & Innovation
A company focused on a bionic vision system sees hope for improvements in patients by means of a wireless sub-retinal implant together with augmented reality glasses.
Robotics
Drawing inspiration from biology and the toy shelf, researchers at Thayer School of Engineering at Dartmouth College and City University of Hong Kong have developed a swimming robot with a light-controlled cellular engine ...
May 15, 2019
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127
Engineering
Injuries can't heal without a constant influx of blood's key ingredient—oxygen.
Nov 8, 2018
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780
Engineering
Imagine standing in front of a wall of windows, surveying the view. You hear someone enter the room behind you. You turn. "Welcome," you say. "Here is the video I wanted to show you." At the press of a button, the view vanishes ...
May 11, 2018
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9
Infrared (IR) radiation is electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm).
Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared (47% share of the spectrum), visible (46%), and ultra-violet (only 6%) light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.
This text uses material from Wikipedia, licensed under CC BY-SA
