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High tech takes on football

Last October, when the University of North Carolina's Tar Heels faced off against Utah, the opening kickoff sent one of the players--rather than the ball--into orbit. North Carolina's kicker received a hard blow to the head during the play. Coaches and physicians could easily see the hit packed a punch, but digital pagers also sent a warning telling them to examine his condition further. Then they turned to a computer system designed to receive radio signals from six tiny sensors in the kicker's helmet to see the force of the blow, which was more than 100 Gs. (CNET)

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