In the beginning, the universe was so hot and so dense that light could not travel far. Photons were emitted, scattered, and absorbed as quickly as the photons in the heart of the brightest stars. But in time the cosmos expanded ...
Astronomy
Jan 29, 2024
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41
The science fiction author Arthur C. Clarke selected his own seven wonders of the world in a BBC television series in 1997. The only astronomical object he included was SS 433. It had attracted attention already in the late ...
Astronomy
Jan 25, 2024
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85
Certain materials have desirable properties that are hidden, and just as you would use a flashlight to see in the dark, scientists can use light to uncover these properties.
Condensed Matter
Jan 24, 2024
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619
Color mixing is the process of combining two or more colors: red and green make yellow, blue and red make purple, red and green and blue make white. This process of mixing colors is the basis for the future of solid-state ...
Condensed Matter
Jan 23, 2024
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70
Researchers at the University of Basel have built a quantum memory element based on atoms in a tiny glass cell. In the future, such quantum memories could be mass-produced on a wafer.
Quantum Physics
Jan 17, 2024
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293
Understanding the nature of quantum objects' behaviors is the premise for a reasonable description of the quantum world. Depending on whether the interference can be produced or not, the quantum object is endowed with dual ...
Atoms can absorb and reemit light—this is an everyday phenomenon. In most cases, however, an atom emits a light particle in all possible directions—recapturing this photon is, therefore, quite hard.
Optics & Photonics
Jan 16, 2024
4
171
Radar altimeters are the sole indicators of altitude above a terrain. Spectrally adjacent 5G cellular bands pose significant risks of jamming altimeters and impacting flight landing and takeoff. As wireless technology expands ...
Optics & Photonics
Jan 16, 2024
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50
An international collaboration, led by Macquarie University scientists, has introduced a new quantum optics technique that can provide unprecedented access to the fundamental properties of light-matter interactions in semiconductors.
Optics & Photonics
Jan 16, 2024
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69
Photonics offers various advantages, including enablement of high-speed and low-loss communication by leveraging light properties in optical data communication, biomedical applications, automotive technology, and artificial ...
Optics & Photonics
Jan 10, 2024
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2
