Quantum dots are a kind of artificial atom: just a few nanometers in size and made of semiconductor materials, they can emit light of a specific color or even single photons, which is important for quantum technologies. The ...
Nanophysics
Jan 31, 2024
0
66
Debris disks are quite common in the universe. Young stars have protoplanetary disks from which planets form. Black holes have accretion disks that are the source of the galactic jets. Supernova remnants can form a disk around ...
Astronomy
Oct 23, 2023
0
9
Of the world's various weather phenomena, fog is perhaps the most mysterious, forming and dissipating near the ground with fluctuations in air temperature and humidity interacting with the terrain itself.
Earth Sciences
Dec 29, 2023
13
61
Planetary scientists have long known that Mercury has been shrinking for billions of years. Despite being the closest planet to the sun, its interior has been cooling down as internal heat leaks away. This means that the ...
Planetary Sciences
Oct 3, 2023
0
56
NASA's Parker Solar Probe completed its 18th close approach to the sun on Dec. 28, 2023, matching its own distance record by skimming just about 4.51 million miles (7.26 million kilometers) from the solar surface.
Space Exploration
Jan 8, 2024
0
47
Iraqi archaeological marvels that have survived millennia and the ravages of war now face a modern threat: being blasted and slowly buried by sandstorms linked to climate change.
Archaeology
Apr 16, 2023
0
37
The evolution of Earth's climate contains many components. And new research has shown just how critical the ozone layer is to the surface temperature of the Earth. Without an ozone layer, our planet would be 3.5 Kelvin cooler.
Planetary Sciences
Jun 14, 2023
0
25
Radiation largely shapes variations of temperatures across continents, but evaporation and turbulent heat transfer also play their part. These are inherently complex processes. Following a new physical approach, the observed ...
Earth Sciences
Jul 13, 2023
0
247
Sustainable energy solutions cannot be pulled out of thin air. However, combining air with metal and other frameworks may pave the way for environmentally friendly energy conversion and storage, according to a research team ...
Nanophysics
Mar 7, 2023
0
9
Friction is hard to predict and control, especially since surfaces that come in contact are rarely perfectly flat. New experiments demonstrate that the amount of friction between two silicon surfaces, even at large scales, ...
General Physics
Dec 1, 2023
1
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