Cosmic
Mandelbrot
Some photos
And then some links
https://community.lithium.com/t5/Lithium-Community/ct-p/External
Pasted link:
From Lithium
https://community.lithium.com/t5/Online-Communities-Blog/Community-Android-SDK-is-GA/ba-p/301114
From wiki
https://en.wikipedia.org/wiki/History_of_timekeeping_devices
Some text:
For thousands of years, devices have been used to measure and keep track of time. The current sexagesimal system of time measurement dates to approximately 2000 bc from the Sumerians.
The Ancient Egyptians divided the day into two 12-hour periods, and used large obelisks to track the movement of the sun. They also developed water clocks, which were probably first used in the Precinct of Amun-Re, and later outside Egypt as well; they were employed frequently by the Ancient Greeks, who called them clepsydrae. The Zhou dynasty is believed to have used the outflow water clock around the same time, devices which were introduced from Mesopotamia as early as 2000 bc.
