Now the Light Gap is a green and eco-friendly concept clock that sports solar cells on its rear end – this means you would do well to stick it on a window, letting sunlight illuminate the slit that is located on the face in order to form the hour hand. When dusk falls, the batteries will take over where the sunlight left off, illuminating a row of LEDs in the slit while receiving their juice from the solar cells that had been hard at work all day long. Sounds interesting, but will it be practical enough in the real world? After all, direct sunlight isn’t going to happen all day long, and will that window of opportunity alongside regular light streaming through one’s windows be enough to deliver enough power for storage as night time beckons? We will only dignify that question with an answer should it materialize as a real device.

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