Is It Time? A Short Story of Timekeeping Devices

The popular boom for wristwatches emerged in the 20th century. It arose out of the desire to meet the need for watches that could operate underwater.

Does Time Exist?

"The earliest time measurements were observations of cycles of the natural world, using patterns of changes from day to night and season to season to build calendars. More precise time-keeping eventually came along to put time in more convenient boxes. But what exactly are we measuring?"