For the PDF version of this article, click here. Power electronic system designers know about natural convection, which starts with the simple statement: Hot air rises. For example, a power ...

Albert Einstein’s simple yet powerful equation revolutionized physics by connecting the mass of an object with its energy for the first time. It is perhaps the most famous equation in the world, and ...

The currents of the oceans, the roiling surface of the sun, and the clouds of smoke billowing off a forest fire—all are ...