3 ms·
Some recent discussions about atomic clocks: New atomic fountain clock joins group that keeps the world on time (nist.gov) | 118 points | 76 days ago | 33 comm
by infogulch 1y ago
Some recent discussions about atomic clocks:
New atomic fountain clock joins group that keeps the world on time (nist.gov)
| 118 points | 76 days ago | 33 comments | https://news.ycombinator.com/item?id=43831792 https://news.ycombinator.com/item?id=43831792
Major leap for nuclear clock paves way for ultraprecise timekeeping (nist.gov)
| 12 points | 7 months ago | 10 comments | https://news.ycombinator.com/item?id=42362215 https://news.ycombinator.com/item?id=42362215
I left a comment on the first that summarizes the second one, which describes how they're working on a new type of atomic "nuclear" clock based on the atomic nucleus instead of electron orbitals. It doesn't mention the accuracy, I wonder how it would compare to this "ion" clock.
- fsh 1y agoThe largest uncertainty of the Al+ clock is caused by relativistic time dilation due to the ion moving around a bit in the ion trap. This would affect a 229Th clock in the same way, but maybe the larger atomic mass would help.