Archive: 12/02/2011

Lying and sitting more comfortably

(PhysOrg.com) -- Anyone confined to a wheelchair or a bed has to deal with numerous complications. Frequently, they suffer from bedsores or decubitus ulcers as physicians call them. Bony prominences, such ...

dateDec 02, 2011 in Engineering
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Crystallizing the switch to hydrogen

Hydrogen gas is an almost infinitely inexhaustible fuel source that emits only clean water during combustion. Switching from hydrocarbon-based transportation to systems powered by state-of-the-art fuel cells ...

dateDec 02, 2011 in Materials Science
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Dawn soars over asteroid Vesta in 3-D

Glide over the giant asteroid Vesta with NASA's Dawn spacecraft in a new 3-D video.  Dawn has been orbiting Vesta since July 15, obtaining high-resolution images of its bumpy, cratered surface and making ...

dateDec 02, 2011 in Space Exploration
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Sharpening the focus of microscopes

A new advanced imaging scheme—with a resolution ten times better than that of its counterparts to date—can resolve objects as small as atoms1. Previously, the maximum resolution of optical instruments, ...

dateDec 02, 2011 in General Physics
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