Clock is a small, innocent word. Most people reading it might think of a small little alarm clock or an old digital clock radio. I imagine the clock Clement Hurd drew in Good Night Moon.
Of course, one might think of something spectacular like Big Ben but rarely would anyone think of a masterpiece like the Jens Olesen (1872-1945) clock. In 1897, when he was 25 and saw the astronomical clock at Notre Dame, he decided to build a perpetual clock. Decades later, his youngest grandchild started this clock in motion.
I'd never heard of Olsen's clock before seeing it. We went to the Copenhagen City Hall because the building is gorgeous (and free) but from that day, I most remember this clock.
I was immediately taken by the lovely, golden brass works visible all around through the clear case. Like a sculpture, it draws one around and around. Olsen planned for the works to be covered and only have the faces visible. Whatever was he thinking?
After staring at it, I started reading the signs. What staggered me more than the beauty was the fact that it takes 25,753 years for one of the small gears to make a complete revolution while the fastest gear turns once every 10 seconds.
Since the clock was started on December 15, 1955, the accuracy of this is still untested but think of the precision of the works where one part revolves a complete turn in 25,753 years. Agog? Right?
Jens Olsen was a locksmith in 1897 when he became inspired to design and build an astronomical clock. He learned clockmaking and built and repaired grandfather clocks, pocket watches, and binoculars while, in his spare time, he designed the world clock. Here are some details:
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My favorite face - the planets |
Olsen made plans for the clock working alone until 1928 when astronomer Elis Stromgren joined the project. Drawings for the clock were made between 1934 and 1936 but the production was delayed by fundraising and WWWII. Finally, the clock was built between 1943 and 1955- a portion of which included the Nazi occupation of Denmark.
The clock has 12 movements.
There are 15,448 parts.
In spite of it starting the same year as the atomic clock was invented, it is mechanical and needs to be wound each week.
Displays include lunar and solar eclipses as well as the
positions of the planets and their moons. It shows “true solar time,” the
Julian period, the date in the Gregorian calendar, and time zones as they were introduced
in 1884.
The city of Copenhagen helped to finance the construction of the clock. It became a symbol of Danish craftsmanship.
The case was designed by Gunnar
Billmann Petersen. He chose to create a transparent case and feature the workings as well as the faces. Good choice.
While we live in a world where
technology becomes obsolete before things are delivered and packages opened,
this clock is meant to tell the time and date for thousands of years. The sign
at City Hall states, “The World Clock…will still be able to show the starry sky
above City Hall, the date when Easter Falls and the time in Singapore.”