IN Maxwell's “Theory of Heat” (p. 207) is a drawing showing some of the principal lines on a thermodynamical model suggested by Prof. J. Willard Gibbs, of Yale University. I have been told that Prof.

Blake has over a decade of experience writing for the web, with a focus on mobile phones, where he covered the smartphone boom of the 2010s and the broader tech scene. When he's not in front of a ...