(PhysOrg.com) -- Scientists studying the rotation of the Earth have long known that our planet doesn't have a perfect spin. Most believe this is due to the different types of materials that make up the core, mantle and crust, ...
(PhysOrg.com) -- Black holes are irresistible sinks for matter and energy. They are so dense that not even light can escape from their gravitational clutches. Massive black holes (equal to millions or even billions of solar ...
Astronomy
Jan 16, 2012
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(PhysOrg.com) -- Similar to the way pavement, softened by a hot sun, will slow down a car, graphene—a one-atom-thick sheet of carbon with wondrous properties—slows down an object sliding across its surface. But ...
Nanophysics
Jan 11, 2012
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(PhysOrg.com) -- The problem exists on both a large and a small scale, and it even bothered the ancient Egyptians. However, although physicists have long had a good understanding of friction in things like stone blocks being ...
Condensed Matter
Dec 20, 2011
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Lightning fast, the sled bolts down the icy run. Will the team make it to the finish faster than their competitors? The tension in the crowd depends partly on the run itself: the faster the sleds can travel on the run, the ...
Earth Sciences
Dec 1, 2011
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(PhysOrg.com) -- Earthquakes are some of the most daunting natural disasters that scientists try to analyze. Though the earth's major fault lines are well known, there is little scientists can do to predict when an earthquake ...
Earth Sciences
Nov 30, 2011
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Studying microscopic interactions at single asperities is vital for the understanding of friction and lubrication at the macroscale. Surface probe instruments with carbon nanotube tips may enable such investigations, as now ...
Nanomaterials
Nov 29, 2011
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A floating weed that clogs waterways around the world has at least one redeeming feature: It's inspired a high-tech waterproof coating intended for boats and submarines.
Nanomaterials
Nov 10, 2011
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A team of scientists from Italy and Germany has recently developed a model to predict the friction occurring when a rough surface in wet conditions (such as a road on a rainy day) is in sliding contact with a rubber material ...
General Physics
Oct 19, 2011
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A new study by GW Professor Yongsheng Leng, assistant professor of engineering and applied science, and postdoctoral scientist Yajie Lei, reveals that solidified lubricants in tight pores do not change back to a liquid form. ...
Condensed Matter
Oct 18, 2011
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