The human eye can only see light at certain frequencies (called the visible spectrum), the lowest of which constitutes red light. Infrared light, which we can't see, has an even lower frequency than red light. Researchers ...
Optics & Photonics
Jun 20, 2024
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96
Photographing faint objects close to bright stars is incredibly difficult. Yet, by combining data from ESA's Gaia space telescope with ESO's GRAVITY instrument on the ground, scientists managed just that. They took the first ...
Astronomy
Jun 20, 2024
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162
Terahertz waves are being intensely studied by researchers around the world seeking to understand the "terahertz gap." Terahertz waves have a specific frequency that puts them somewhere between microwaves and infrared light. ...
Condensed Matter
Jun 19, 2024
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29
Getting a molecule to do what you want it to do is not always easy. An organic molecule will absorb only certain wavelengths of light based on its arrangement of electrons, which can be difficult to fine tune. Even so, the ...
Materials Science
Jun 17, 2024
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30
Infrared detectors are the core components of infrared detection systems and play an important role in fields such as night vision, remote sensing, and health monitoring. In this context, the utilization of mature silicon ...
Optics & Photonics
Jun 14, 2024
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15
When molecules are irradiated with infrared light, they begin to vibrate due to the energy supply. For Andreas Hauser from the Institute of Experimental Physics at Graz University of Technology (TU Graz), this well-known ...
Nanophysics
Jun 11, 2024
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48
Researchers have for the first time demonstrated that a specific class of oxide membranes can confine, or "squeeze," infrared light—a finding that holds promise for next generation infrared imaging technologies. The thin-film ...
Nanophysics
Jun 10, 2024
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92
A research team have developed a high-efficiency photocatalyst that converts carbon dioxide (CO2), a major contributor to climate change, into natural gas (methane, CH4). The team is led by Professor In Soo-il of the Department ...
Analytical Chemistry
Jun 3, 2024
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16
An international team of astronomers today announced the discovery of the two earliest and most distant galaxies ever seen, dating back to only 300 million years after the Big Bang. These results, using NASA's James Webb ...
Astronomy
May 30, 2024
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373
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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