Here's a stumper: How many parts can you divide a line into? It seems like a simple question. You can cut it in half. Then you can cut those lines in half, then cut those lines in half again. Just how ...

On August 10, 1632, only 10 months before the Roman Inquisition condemned Galileo Galilei for his advocacy of Copernican astronomy, five Jesuits met in Rome to discuss a seemingly arcane point: Is a ...

THE merits of Prof. Lamb's text-books are so well known and appreciated that it is unnecessary to analyse or commend the present oone, especially as it appears in its third edition. As the work of an ...

Time doesn’t exist, according to a letter from Bill Summers (22 October, p 34) because the present is infinitesimal. If that were so, then much of modern mathematics would have to go. Newton had to ...

THE author states that his aim in this book is to teach those portions of the Calculus which are most useful for a student of physics or engineering. We fear that many an engineering student would be ...