A grain of sand buried for an extended period of time in earthworks or on the bottom of the ocean, accumulate a luminescence signal. Scientists use this signal to determine how long a particular grain of sand has been buried. ...
Earth Sciences
Sep 3, 2021
0
14
Nature is full of fascinating patterns. Plants show beautiful spiral growth, regularly arranged leaves and petals, animals impress us with their striped and dotted furs and social insects build complex nest structures. These ...
Cell & Microbiology
Jun 25, 2021
0
17
A new study published in Nature Communications finds that piles of sand grains, even when undisturbed, are in constant motion. Using highly-sensitive optical interference data, researchers from the University of Pennsylvania ...
Earth Sciences
Jun 24, 2021
0
603
Millions of Americans will visit New England's beaches this summer to cool off, play in the waves and soak up the sun. Until now, the factors governing which beaches slope gradually to the sea and which ones end abruptly ...
Earth Sciences
Jun 21, 2021
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11
Sand is a fascinating material. It can flow and be poured like a liquid, but retains many of the properties of solids, clogging pipes or forming sand dunes. The behavior of collections of small particles like sand is known ...
Soft Matter
Mar 8, 2021
1
93
Joe Nuth loves dust. Among astronomers, that puts him in a minority.
Space Exploration
Oct 4, 2019
0
203
The so-called Abelian sandpile model has been studied by scientists for more than 30 years to better understand a physical phenomenon called self-organized criticality, which appears in many real-life situations such as the ...
Mathematics
Feb 11, 2019
0
145
Crescent-shaped dunes called barchans are structures that appear in a wide variety of environments, including beaches and deserts, riverbeds and the seafloor, inside water pipes and oil pipelines, and on the surface of Mars ...
General Physics
Nov 27, 2018
0
13
An international group of researchers (the first author is Nikita Kalinin, Higher School of Economics—Saint-Petersburg, the last author is Ernesto Lupercio, CINVESTAV, Mexico) has presented the first continuous model describing ...
Mathematics
Sep 13, 2018
0
25
A team of researchers from several institutions in Germany and Israel has used theoretical analysis to explain the conditions under which mega-ripples form in areas where sand dunes rise. In their paper published in the journal ...
