There's a reason that the Internet backbone is made of fiber-optic cables: photons transport bits of information faster than electrons. But while photons and fiber are the most efficient way of sending data across continents, it's still cheaper and easier to use electrons in copper wiring for most data transfer over shorter distances. Now Intel plans to sell inexpensive cables with fiber-optic-caliber speed to connect, for instance, a laptop and an external hard drive. (source: technologyreview.com)
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