What is tensor analysis? Part III — Applications

In two preceding parts of this article^∗ the tensor was hunted to its lair and tortured until it revealed its innermost secrets. Here the author shows how some of those secrets have helped to solve difficult problems in theoretical physics and engineering. Tensor analysis is not propounded as the best method of attack for all speculative problems, but is shown to offer perhaps the simplest solution of many problems requiring broad, searching analysis.