Archive: 21/11/2011

Lightning sprites are out-of-this-world

Only a few decades ago, scientists discovered the existence of "sprites" 30 to 55 miles above the surface of the Earth. They're offshoots of electric discharges caused by lightning storms, and a valuable window into the composition ...

dateNov 21, 2011 in Space Exploration
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Hydrodynamics of writing with ink

For millennia, writing has been the preferred way to convey information and knowledge from one generation to another. We first developed the ability to write on clay tablets with a point, and then settled on a reed pen, as ...

dateNov 21, 2011 in General Physics
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A new model for understanding biodiversity

(PhysOrg.com) -- Animals like foxes and raccoons are highly adaptable. They move around and eat everything from insects to eggs. They and other "generalist feeders" like them may also be crucial to sustaining biological diversity, ...

dateNov 21, 2011 in Ecology
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Pakistan delays ban on 'obscene' text messages

Pakistan's mobile operators on Monday deferred implementing a ban on nearly 1,700 "obscene" words from text messages, saying they were seeking further clarification from the telecoms authority.

dateNov 21, 2011 in Telecom
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Carbon nanotube forest camouflages 3-D objects

Carbon nanotubes, tiny cylinders composed of one-atom-thick carbon lattices, have gained fame as one of the strongest materials known to science. Now a group of researchers from the University of Michigan is taking advantage ...

dateNov 21, 2011 in Nanophysics
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