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  • News

    Primal Progress: Pattern hunters spy order among prime numbers

    Mathematicians have taken a step forward in understanding patterns within the primes, numbers divisible only by 1 and themselves. According to the new work, the population of prime numbers contains an infinite collection of arithmetic progressions—number sequences in which each term differs from the preceding one by the same fixed amount.

    For example, in the sequence 3, 5, 7, each prime...

    04/21/2004 - 09:35 Numbers
  • Feature

    Great Computations

    Computers at home or in the office often sit idle for minutes, hours, or days at a time. The Internet now allows researchers to take advantage of this enormous reservoir of unused computer power.

    More than 1.6 million people have downloaded software to sift through signals collected by the Arecibo radio telescope in Puerto Rico as part of a search for signs of intelligent...

    09/06/2002 - 17:54 Numbers
  • Feature

    Pitching Science

    The pitcher's action up to the release of the ball is part of the art of pitching; the action of the ball after release . . . is addressed by physics.

    –Robert K. Adair,

    The Physics of Baseball, 1994

    Even in baseball, there's pure science and there's applied science. Mechanical engineer LeRoy W. Alaways has been pursuing a bit of both.

    On the one hand, he and his...

    06/05/2001 - 13:12 Physics