Posted on May 22, 2014 Why do I blog?I've been writing my blog for three and a half years. Why do I do it? How do I do it?
| Posted on January 16, 2017 Centroids of semicircles and hemispheresHow to calculate the centroid of a semicircle, and how this is different from a hemisphere.
| Posted on April 03, 2016 Solar EclipsesWhat's the difference between a total and an annular solar eclipse?
| Posted on August 24, 2012 The eight Queens problemHow to place eight queens on a chess board so that no queen is attacking any other.
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