Word: ellipsoids
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...equator is 3,963⅓-miles. Too small, said Izotov; he calculated that in its thickest section the radius is about ½ mile more. The Izotov globe is flattened slightly not only at the poles, like previous globes, but at the equator. Thus the earth, like every ellipsoid, has three axes instead of two and must rotate with a slightly seasick motion...
...reciprocal balance of segments of the earth. By investigations made in 1909 and 1910, he determined that the diameter of the earth at the equator is 7,926,678 miles and 7,889,964 miles through the poles. This establishes that the earth is not a sphere but an ellipsoid, slightly flattened at the poles. The Hayford figures have now been adopted as the "ellipsoid of reference," and the geodetic authorities of all the nations will use them to coordinate their work. Director Hayford was, at the time of this decision, seriously ill at his home in Evanston...
...their subjects. After the discussion, which follows all papers, refreshments are served. All men taking advanced courses in mathematics or physics are eligible for membership in the club. At the next meeting on December 19 Dr. J. L. Coolidge '95 will speak on 'Staude's String Construction of An Ellipsoid...