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    In MLB, how do they measure the speed of fastball?

    Question #125791. Asked by star_gazer. (Apr 23 12 8:20 PM)


    MikeMaster99

    		By Doppler radar (usually a fixed radar gun). Speed is calculated from the frequency (Doppler) shift as the radio wave returns off the ball.

    http://en.wikipedia.org/wiki/Radar_gun

    Apr 24 12, 5:37 AM

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