Beverly Clock
The Beverly Clock is a mechanical clock in the elevator foyer of the Physics Department of the University of Otago in Dunedin , New Zealand .
history
The clock, located on the third floor of the building, was designed by Arthur Beverly in 1864 and first exhibited in 1865 at the New Zealand Exhibition in Dunedin . Since then, the watch has been in operation with a few interruptions such as cleaning, repairs or moving and has never been wound with the watch key .
When Arthur Beverly died in 1908, he bequeathed the watch to the university and a £ 57,000 estate that was used to fund scholarships at the University of Otago .
functionality
The mechanism of the watch is driven by fluctuations in atmospheric pressure and daily temperature fluctuations, of which the temperature fluctuations are more important for its operation. Due to the temperature fluctuations, the air in a 28-liter box expands or contracts and presses on a membrane. A six degree Fahrenheit (3.3 K) fluctuation in temperature over the course of each day creates roughly enough pressure to add an inch to a pound (0.113 joules or 31 μWh), which is the mechanism of the watch finally drives.
A similar mechanism in a commercially available watch that works on the same principle is the Atmos watch , made by the Swiss watchmaker Jaeger-LeCoultre .
Web links
- BEVERLY CLOCK - WikiVidi Documentary . In: WikiVidi Documentaries . Youtube, February 25, 2018,accessed on May 6, 2020(English, visualized and spoken article of the English WP; video 1:47 min).
Individual evidence
- ^ A b Professor Craig Rodger named the Beverly Chair in Physics . In: Otago Bulletin Board . University of Otago , May 15, 2019, accessed May 6, 2020 .
- ↑ Beverly Clock . University of Otago Dunedin, New Zealand . Atlas Obscura , accessed May 6, 2020 .