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  1. From the June 6, 1931, issue

    LARGEST WIND TUNNEL AND TOWING CHANNEL FINISHED Aeronautic research took a stride forward when two outstanding pieces of apparatus for testing and improving aircraft–both the largest of their kind in the world–were officially put in operation last week by the National Advisory Committee for Aeronautics at its Langley Memorial Aeronautical Laboratory in Langley Field, Va. […]

    By Science News
  2. Math

    Prime Twins

    Number theory offers a host of problems that are remarkably easy to state but fiendishly difficult to solve. Many of these questions and conjectures feature prime numbers–integers evenly divisible only by themselves and 1. For instance, primes often occur as pairs of consecutive odd integers: 3 and 5, 5 and 7, 11 and 13, 17 […]

    By Ivars Peterson

  3. 18945

    Regarding this article, wherein Cosmic Background Explorer (COBE) findings are surpassed by BOOMERANG (Balloon Observations of Millimeter Extragalactic Radiation and Geophysics) data, can you help me understand what happened to the Microwave Anistropy Probe (MAP)? It was expected to surpass COBE in many ways.