4 ms·
The building I currently work in used to have clocks that were synchronized by the power grid. The power company would guarantee a number of cycles per day. Whi
by jabroni_salad 3y ago
The building I currently work in used to have clocks that were synchronized by the power grid. The power company would guarantee a number of cycles per day. While the precision isn't always there your clocks would never be permanently drifted and that was good enough.
I haven't looked into it but the guy who sold me our current gps time receiver told me that power companies no longer offer a cycle guarantee.
- xattt 3y agoA friend of mine lived in a deliberate-built uranium mining town about 30 km away from the Trans-Canada Highway. One day, it disconnected from the main grid for one reason or another, but still had power from a local hydroelectric dam. The dam ran too slow, and everyone who relied on wired clocks ended up being 15 minutes behind in their day.
- dugmartin 3y agoThirty years ago I had a graduate assistantship in the physical plant of my university. One of the cool things I saw was a 55-gallon drum sized motor spin up to synchronize all the clocks on campus at noon.
- RicoElectrico 3y agoIn the European grid, grid time is tracked and adjusted as needed by nudging target frequency. https://www.swissgrid.ch/en/home/operation/grid-data/current-data.html https://www.swissgrid.ch/en/home/operation/grid-data/current...