e: The Story of a Number by Eli Maor
The interest earned on a bank account, the arrangement of seeds in a sun flower, and the shape of the Gateway Arch in St. Louis are all intimately connected with the mysterious number e. In this informal history, Eli Maor portrays the curious characters and the elegant mathematics that lie behind the number. Designed for the reader with only a modest background in mathematics and illuminates a golde era in the age of science.