Water Clock: Did you mean...?

Keeping good time proved an elusive objective for centuries, and it was only in the second half of the 17th century, during the Scientific Revolution (1500-1700), that clocks were made which lost seconds rather than minutes each day. The...

This reconstruction of the 14th-century water clock from the Dar al-Muwaqqit of the al-Qarawiyyin Mosque (Fez, Morocco) is now on display at the Istanbul Museum of the History of Science and Technology in Islam. The Dar al-Muwaqqit is a...

Replica of a water-powered clock invented in 1433 CE by the royal scholars under the guidance of King Sejong the Great (r. 1418-1450 CE). Yeouido Park, Seoul, South Korea.

John Harrison (1693-1776) invented an accurate marine chronometer after several decades of research and development. While the pendulum clock had already been invented in the 17th century, a clock that could withstand the vagaries of the...

Christiaan Huygens (1629-1695) was a Dutch mathematician, physicist, and astronomer. A leading figure of the Scientific Revolution, Huygens combined research into mathematical-based theories, such as the movement of light waves, with practical...

A design for a pendulum clock made by Galileo Galilei (1564-1642) in the last year of his life. Galileo never made a working model of the clock (although his son did in 1649). Illustration by Vincenzo Viviani. (Science Museum, London)

A detail of a table clock made by Thomas Tompion (1639-1713). Perhaps made for Anne, Queen of Great Britain (r. 1702-1714) around 1708. (Science Museum, London)

Old Woman's Water and the Buffalo Cap is a Cheyenne tale of the two great culture heroes Standing-on-the-Ground and Sweet Medicine and how they brought back the buffalo to the people and established the tradition of the sacred buffalo hat...

A decimal clock manufactured during the French Revolution. Decimal time is measured on the inside of the clock while duodecimal time is on the outside, late 18th/early 19th century.

It is said that Chester is the richest city in Britain in terms of archaeological and architectural treasures. One of the finest strategic outposts of the Roman Empire, it is one of the few walled cities left in Britain today. Rachael Lindsay...