Stranger in the night: space rock to make close Earth flyby

(Phys.org)—A little-known asteroid will skim past Earth on 15 February, passing just 28 000 km from our planet. The 50 m-diameter chunk of space rock was discovered last year by ESA-sponsored amateur astronomers in Spain.

Smart satnav drives around the blue highway blues

Endlessly frustrated by congested roads, computer scientists at California State University, in Fullerton have developed a satellite navigation system, GeoTNavi, which hooks into historical traffic data and current vehicle ...

Researchers developing faster video streaming

In the smartphones and tablet era, more and more users are watching videos on the move—with a resulting strain on mobile networks. The combination of the HEVC video compression standard with LTE brings networks welcome ...

Fresnel lenses: High contrast and efficient focusing

The first Fresnel lens was installed in 1823 in the Cordouan lighthouse, where its beam was visible for 32 km. Since then, this lens design has been used in lighthouses, traffic lights, automobile headlights, magnifying glasses, ...

Hi-fi single photons

Many quantum technologies—such as cryptography, quantum computing and quantum networks—hinge on the use of single photons. While she was at the Kastler Brossel Laboratory (affiliated with the Pierre and Marie Curie University, ...

Dartmouth research imparts momentum to mobile health

Bracelets and amulets are in the works at Dartmouth's Institute for Security, Technology, and Society (ISTS). Rather than items of mere adornment, the scientists and engineers are constructing personal mobile health (mHealth) ...

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