In a study published in Nature Communications, collaborating physicists from Singapore and the UK have reported an optical analog of the Kármán vortex street (KVS). This optical KVS pulse reveals fascinating parallels between ...
Optics & Photonics
Jun 13, 2024
0
194
Whether sedimentary rocks store fossil hydrocarbons or act as impermeable layers to prevent the rise of oil, natural gas or stored carbon dioxide—all depends on their porosity. The size, shape, organization, and connectivity ...
Earth Sciences
Apr 22, 2024
0
3
A method based on CT (computed tomography)—a type of imaging that is widely used in hospitals—can help improve our understanding of CO2 storage, batteries, and processes in the body such as nutrient uptake.
Soft Matter
Apr 9, 2024
0
21
Researchers from University of Tsukuba investigated the propulsion mechanism by visualizing water flow around a swimmer during underwater dolphin-kick swimming in a water channel via particle image velocimetry. Their findings ...
General Physics
Mar 12, 2024
0
18
For decades scientists have been trying to solve Feynman's Sprinkler Problem: How does a sprinkler running in reverse—in which the water flows into the device rather than out of it—work? Through a series of experiments, ...
General Physics
Jan 29, 2024
3
59
Hold your hands out in front of you, and no matter how you rotate them, it's impossible to superimpose one over the other. Our hands are a perfect example of chirality—a geometric configuration by which an object cannot ...
Soft Matter
Jan 8, 2024
1
25
Weather forecasting is important for various sectors, including agriculture, military operations, and aviation, as well as for predicting natural disasters like tornados and cyclones. It relies on predicting the movement ...
General Physics
Jan 4, 2024
0
910
Beneath Svalbard's permafrost, millions of cubic meters of methane are trapped—and scientists have now learned that it can migrate beneath the cold seal of the permafrost and escape. A large-scale escape could create a ...
Earth Sciences
Dec 13, 2023
13
602
How much stress do pipes undergo when a liquid flows through them, and how does it depend on the degree of curvature of the pipe?
A novel measurement technique has been developed to visualize the fluid flow and distribution within two droplets levitated and coalesced in space using fluorescence-emitting particles. This technique enabled the estimation ...
Optics & Photonics
Nov 16, 2023
0
46
