The flow of granular materials, such as sand and catalytic particles used in chemical reactors, explains a wide range of natural phenomena, from mudslides to volcanos, and enables a broad array of industrial processes, from ...
General Physics
Apr 22, 2019
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As climate change melts Greenland's glaciers and deposits more river sediment on its shores, an international group of researchers has identified one unforeseen economic opportunity for the Arctic nation: exporting excess ...
Earth Sciences
Feb 11, 2019
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(Phys.org)—A team of researchers from France and the Slovak Republic has proposed a theory to explain the water-like streaks that appear seasonally on the surface of Mars, which do not involve water. In their paper published ...
(Phys.org)—A team of researchers from several institutions in France has found that some common black garden ants leave building instructions in pillars for other worker ants to follow. In their paper published in Proceedings ...
From a mechanical perspective, granular materials are stuck between a rock and a fluid place, with behavior resembling neither a solid nor a liquid. Think of sand through an hourglass: As grains funnel through, they appear ...
General Physics
Nov 17, 2014
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The amazing ability of sidewinder snakes to quickly climb sandy slopes was once something biologists only vaguely understood and roboticists only dreamed of replicating. By studying the snakes in a unique bed of inclined ...
Robotics
Oct 9, 2014
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(Phys.org) —A pair of researchers has found, via sand sampling data, that the common perception that too little sand is being carried down the Mississippi River to replenish depleted loads is incorrect. In their study, ...
(Phys.org) —A team made up of members from research facilities in France and China has found that theoretical models built to describe sand dune formation align very closely with how they actually form in nature. In their ...
(Phys.org) —NASA research indicates hunks of frozen carbon dioxide—dry ice—may glide down some Martian sand dunes on cushions of gas similar to miniature hovercraft, plowing furrows as they go.
Space Exploration
Jun 11, 2013
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Last year, images from NASA's Mars Reconnaissance Orbiter captured sand dunes and ripples moving across the surface of Mars—observations that challenged previously held beliefs that there was not a lot of movement on ...
Space Exploration
May 9, 2012
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