If you take an object and set it out in the sun, it will begin to warm up. This is because it is absorbing energy from the sun's rays and converting that energy to heat. If you leave that object outside, it will continue ...
General Physics
Jul 25, 2023
2
450
"Warm Arctic—cold Eurasia" is one of the most significant patterns of winter climate system changes in the mid-high latitudes of the Northern Hemisphere. In winter 2020/21, this large-scale pattern underwent a significant ...
Earth Sciences
Jul 21, 2023
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10
A mile-thick ice sheet in Greenland vanished around 416,000 years ago during a period of moderate natural warming, driving global sea rise to levels that would spell catastrophe for coastal regions today, a study said Thursday.
Earth Sciences
Jul 20, 2023
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68
Academics at the University of Leeds believe they could have found the answer to a long-running mystery behind Jupiter's famous "stripes."
Astronomy
May 22, 2023
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411
Once every 10,000 years or so, the center of a galaxy lights up as its supermassive black hole rips apart a passing star. This "tidal disruption event" happens in a literal flash, as the central black hole pulls in stellar ...
Astronomy
Apr 28, 2023
0
293
Researchers at Binghamton University led research partnering with the Center for Functional Nanomaterials (CFN)—a U.S. Department of Energy (DOE) Office of Science User Facility at Brookhaven National Laboratory—to get ...
Materials Science
Apr 7, 2023
0
188
An international team of researchers, led by Drexel University, has found that a thin coating of MXene—a type of two-dimensional nanomaterial discovered and studied at Drexel for more than a decade—could enhance a material's ...
Nanophysics
Mar 30, 2023
1
501
Researchers at the University of North Carolina at Chapel Hill Department of Chemistry have engineered silicon nanowires that can convert sunlight into electricity by splitting water into oxygen and hydrogen gas, a greener ...
Nanophysics
Feb 17, 2023
0
181
Researchers at ETH Zurich have developed an ultrathin, gold-based transparent coating that is able to convert sunlight into heat. It can be applied to glass and other surfaces to prevent them from fogging. Applications for ...
Nanomaterials
Dec 12, 2022
0
93
The warming during the summer months in Europe has been much faster than the global average, according to a new study by researchers at Stockholm University published in the Journal of Geophysical Research: Atmospheres. As ...
Earth Sciences
Nov 22, 2022
1
99
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.
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