Lithium-ion batteries are common in consumer electronics. They are one of the most popular types of rechargeable batteries for portable electronics, with a high energy density, no memory effect and only a slow loss of charge ...
Energy & Green Tech
Mar 6, 2015
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Boulders can be effective barriers to protect embassies and other buildings from large vehicle impacts, and a simple model is sufficient to select the right size boulder for the job, according to a team of Penn State researchers.
Engineering
Jan 5, 2015
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14
Workers digging an underground garage for a new hotel in Everett, Washington, recently struck something big about 30 feet below the surface.
Earth Sciences
Nov 20, 2014
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(Phys.org) -- The problem with lithium ion batteries, the kind used in cars, cellphones and other devices, is that they don’t hold enough energy relative to their size. Small batteries mean constantly recharging your ...
Breaking up may be hard to do, but these two lunar boulders seem to have succeeded extremely well! Imaged by the Lunar Reconnaissance Orbiter Camera (LROC) in October of 2009, this crumbled couple was recently identified ...
Space Exploration
Feb 28, 2012
1
0
(PhysOrg.com) -- Last July, people in Spain, Portugal and France watched the brilliant fireball produced by a boulder crashing down through the Earth’s atmosphere. In a paper to be published in the journal Monthly Notices ...
Space Exploration
Feb 13, 2009
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