Virtual Rewards 2.0 - 2019/2020
This Virtual Cache is part of a limited release of Virtuals created between June 4, 2019 and June 4, 2020. Only 4,000 cache owners were given the opportunity to hide a Virtual Cache. Learn more about Virtual Rewards 2.0 on the Geocaching Blog.
31-10-21
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Hello there, this is a 2 step virtual cache and i really hope you will enjoy learning about Jens Olsen and his World clock as it is the most precise mechanical clock in the world and only surpassed by atomic clocks.
- On new years eve it calculates the dates of the religious holidays and full moon of a coming year.
- It has the slowest turning gear in the world and it is winded up once a week.
- It has rhodium coating on all metal faces in the clock. Rhodium is one of the rarest and most valuable precious metals in the world. It is resistant to corrosion - it even remains insoluble in acid.
- It mainly consists of brass parts that derived from melted down kitchen utensils from Danish households of the 1940’ies.
- It is gilded with four kilos of gold.
What a piece of machinery...
Jens Olsen had his workshop on the ground floor at Hallinsgade 8 in Copenhagen, while the first floor was used as a residence.
Video: Jens Olsen works on his world clock
Jens Olsen was a clockmaker, locksmith and astromechanic who built this famous world clock.
Ever since he was a small child, Olsen was interested in clocks and other mechanical devices. He envisioned a clock that would show every conceivable type of time, from sidereal time to the rotation of the planets.
When he was about fifty, Olsen completed his calculations for the world clock he envisioned. He showed them to Professor Elis Strömgren who approved them. However, it took another twenty years to acquire the funds necessary to build the clock.
In 1943, when he was 71 years old, and Denmark was under German occupation, the Technological Institute of Copenhagen placed a workshop and staff at his disposal and work on the clock began.
Unfortunately he died in 1945, before the clock was completed and his colleague Otto Mortensen took over. The clock was completed in 1955. His clock continues to work, and is one of the most accurate mechanical devices in the world.
Exhibition
I invite you to visit Copenhagen City Hall, where this extraordinary clock is exhibited in collaboration with the Museum of Copenhagen. Please feel free to invite friends and family as it is quite spectacular.
| |
Exhibition |
|
Town Hall |
| Saturday |
09.30–13.00 |
|
09.30-13.00 |
| Sunday |
closed |
|
Closed |
| Monday |
09.30–16.00 |
|
09.00-16.00 |
| Tuesday |
09.30–16.00 |
|
09.00-16.00 |
| Wednesday |
09.30–16.00 |
|
09.00-16.00 |
| Thursday |
09.30–16.00 |
|
09.00-16.00 |
| Friday |
09.30–16.00 |
|
09.00-16.00 |
Now for the assignment
Please be aware! This is a 2 step virtual cache
The information regarding the final step will be available in certitude
once you have solves the first puzzle at the starting coordinates or online.
1. Step
You must solve this puzzle from the sidewalk. Do Not enter!
What 3 digits "matr. Nr" is on the sign right next to the "8" sign on Hallinsgade 8.
Insert the number below and you are through to step 2.
You can validate your puzzle solution with certitude.