The technology, pioneered by Powercast in Philadelphia, will be deployed for the first time this year by Philips, for lights on things like Christmas decorations.

该项技术由费城Powercast公司进行前沿研究，并有望于年内首次投入使用，用于飞利浦灯光照明，如圣诞装饰用灯具。

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Nevertheless a firm called Powercast, based in Pittsburgh, Pennsylvania, has developed wireless-charging products that can do useful things while still operating at safe power levels.

ECONOMIST: Wireless charging