3 ms·
> “As of 2013, NIST-F1 has an uncertainty of ..., which means that it would take 100 years for the clock to be off by a second” This didn’t sound right to me.
by teej 6y ago
> “As of 2013, NIST-F1 has an uncertainty of ..., which means that it would take 100 years for the clock to be off by a second”
This didn’t sound right to me. The clock being off 100ms every 10 years sounds terrible. This must be a typo because the source says:
“... which means it would neither gain nor lose a second in more than 100 million years!”
- PaulDavisThe1st 6y ago"1999 — NIST-F1 begins operation with an uncertainty of 1.7 parts in 10 to the 15th power, or accuracy to about one second in 20 million years, making it the most accurate clock ever made (a distinction shared with a similar standard in Paris)." https://www.nist.gov/news-events/news/1999/12/nist-f1-cesium-fountain-clock https://www.nist.gov/news-events/news/1999/12/nist-f1-cesium...
- lucaspauker 6y agoGood catch. It should read 100 million years, not 100 years. Website is updated now.
- hacker_newz 6y agoI was surprised by all the inaccuracy in this blog post until I realized it was written by an algo intern.