Exotic cosmic objects known as ultra-luminous X-ray sources produce about 10 million times more energy than the sun. They're so radiant, in fact, that they appear to surpass a physical boundary called the Eddington limit, ...
Astronomy
Apr 6, 2023
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216
Researchers have theorized a new mechanism to generate high-energy "quantum light," which could be used to investigate new properties of matter at the atomic scale.
Optics & Photonics
Feb 2, 2023
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1574
A case study involving Europe's largest coal-fired power plant shows space-based observations can be used to track carbon dioxide emissions—and reductions—at the source.
Earth Sciences
Jan 9, 2023
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28
Organic light-emitting diodes (OLEDs) play an important role in new-generation flat-panel displays. For ultra-high-definition displays presented in International Telecommunication Union (ITU) Recommendation BT 2020 standard, ...
Optics & Photonics
Dec 16, 2022
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29
Countries signed up to the 2015 Paris Agreement have committed themselves to keep the rise in average global temperature "well below" 2 °C. Every five years, they are to issue so-called "nationally determined contributions" ...
Environment
Oct 28, 2022
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200
NASA's Earth Surface Mineral Dust Source Investigation (EMIT) mission is mapping the prevalence of key minerals in the planet's dust-producing deserts—information that will advance our understanding of airborne dust's effects ...
Planetary Sciences
Oct 25, 2022
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73
Vibrant coral reefs teeming with marine life are diminishing throughout the Caribbean as global temperatures rise. Coral reefs are habitats that support the seafood industry, are barriers for coastal communities from storms, ...
Plants & Animals
May 17, 2022
3
200
To get closer to quantum technology we need to develop non-classical light sources that can emit a single photon at a time and do so on demand. Scientists at EPFL have now designed one of these "single photon emitters" that ...
Optics & Photonics
May 5, 2022
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936
Polaritons are quasiparticles that are formed when photons couple strongly with excitations of matter. These quasi-particles, which are half-light and half-matter, underpin the functioning of a wide range of emergent photonic ...
Terahertz radiation, between infrared and microwave radiation in the electromagnetic spectrum, possesses unique advantages for fundamental studies and practical applications. The ability to generate and manipulate broadband ...
Optics & Photonics
Oct 26, 2021
0
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