From Sundials to Atomic Clocks

by James Jespersen, Jane Fitz-Randolph

2000 345 pages eng

It's present everywhere but occupies no space. We can spend it, but we can't destroy it or even change it, and there's never any more or less of it. Everyone knows what it is and uses it every day, but no one has been able to define it. It's time, of course, an elusive concept that has helped unrav…