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New form of light could make fiber optics more secure
When light hits your eyeball, the spinning photons actually twist it (infinitesimally). The force of that spin, known as angular momentum, has always been thought to be a direct multiple of a quantum physics number called Planck's constant. However, scientists from Trinity College Dublin discovered a form of light with an angular momentum that's exactly half that amount. Though that may not sound like a big deal, the discovery could have "real impact on the study of light waves in areas such as secure optical communications," says Professor John Donegan.
Alt-week 9.22.12: Quantum Scotch tape, moving walls and scientific beer
Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days. Sometimes, here at alt.engadget.com, we're literally on the bleeding edge of technology. We get to explore concepts and ideas that are almost nebular in nature. Not this week though, where there's a distinct utilitarian aroma in the air. The glittery overcoat of future science is replaced by the rolled-up sleeves of good old-fashioned engineering. A bit of sticky tape, a proof of concept omnidirectional bike and a hardware matrix wall. After all that, you'll probably want a beer to wash it down with. Fortunately for you, it's all here. This is alt-week.
