12/06/2012

Helices of light: dark helices with a bright future

(Phys.org) -- Laser beams can be made to form dark as well as bright intensity helices, or corkscrews of light. In a paper shortly to appear in Optics Express, Dr Ole Steuernagel, at the University of Hertfordshire's Science ...

NASA's undersea mission submerges in the Atlantic

An international crew of aquanauts is settling into its home on the ocean floor, where the team will spend 12 days testing concepts for a potential asteroid mission. The expedition is the 16th excursion of the NASA Extreme ...

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