Since we had drifted into the history of clocks and timekeeping, we noted that some of the foremost scientists were involved in the development of clocks, with the first mechanical clock made by Gerbert d’Aurillac in Magdeburg shortly before the end of the first millennium. A millennium later, there is a project to create a clock on an amazing scale with a height said to be 492 feet (150 m.) that is conceived to run inside a mountain for ten thousand years. A working 8 ft. (2.4 m.) tall prototype was created as shown in the picture below. To summarise the project, we have copied some details from Wikipedia:
The Clock of the Long Now, also called the 10,000-year clock, is a mechanical clock under construction that is designed to keep time for 10,000 years. It is being built by the Long Now Foundation. A two-meter prototype is on display at the Science Museum in London. As of June 2018, two more prototypes are on display at The Long Now Museum & Store at Fort Mason Center in San Francisco.
The project was conceived by Danny Hillis in 1986. The first prototype of the clock began working on December 31, 1999, just in time to display the transition to the year 2000. At midnight on New Year’s Eve, the date indicator changed from 01999 to 02000, and the chime struck twice.
The manufacture and site construction of the first full-scale prototype clock is being funded by Jeff Bezos’s Bezos Expeditions, with $42 million, and is on land which Bezos owns in Texas.
For a project of this scale that is ongoing, it would be impossible to cover all of the information about it on any single website. The links below will provide detailed information of the clock and its construction.
Science Museum, London
Long Now Foundation – Clock
Wikipedia- Clock of the Long Now
IEEE Spectrum – The 10,000 year clock
Laughing Squid _ 10,000 year clock installation
Fox News SciTech – Inside the Long Now mountain