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Stories about: CupSpeakers

Cup Speakers by Dimitry Zagga Surely you've used at least once childhood's most basic communication cup device: two carton or even thin plastic cups with a thread attached to the bottom of each of them; as the thread was tight and one person would speak into a cup, the bottom would vibrate and send vibrations to the other cup, making it... 13 November 2008 08:51 GMT