Time. It's a tool we use to measure virtually every aspect of our lives. And yet as important as time is, rarely do we ponder the myriad of questions about it.
What is time, and how did humans first measure it? How was it that disparate ancient cultures around the world came up with similar means of telling time? Is time a constant, or can it speed up and slow down? In this book, Klaus Mainzer considers these and many other questions and provides a brief overview of the concept of time from antiquity to the present.