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Originally published in 1906. Delves into the physics of time measurement. Includes a description of the parts of a pendulum clock and a description of how watches work. From Chapter I, "Time is one of the most mysterious of our elementary ideas. It seems to exist or not to exist, according as we are thinking or not thinking. It seems to run or stand still and to go fast or slowly. How it drags through a wearisome lesson; how it flies during a game...

Time is ticking away for a murderer in Agatha Christie's classic, The Clocks, as Hercule Poirot investigates the strange case of a corpse surrounded by numerous timepieces in a blind woman's house.

Sheila Webb expected to find a respectable blind lady waiting for her at 19 Wilbraham Crescent—not the body of a middle-aged man sprawled across the living room floor. But when old Miss Pebmarsh denies sending for her in

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Humorous text explains the concept of time, from seconds to hours on both analog and digital clocks, from years to millennia on the calendar.