4 ms·
Precision tests of gravity: https://www.npl.washington.edu/eotwash/node/1 https://www.npl.washington.edu/eotwash/node/1 Our most-recent measurement: https://ne
by ISL 7y ago
Precision tests of gravity: https://www.npl.washington.edu/eotwash/node/1 https://www.npl.washington.edu/eotwash/node/1
Our most-recent measurement: https://news.ycombinator.com/item?id=22797729 https://news.ycombinator.com/item?id=22797729
Once you know how, it's not as hard as you'd expect to measure a nanoradian ;).
- jpmattia 7y agoThat looks like all kinds of fun! Thanks for the links.
- ISL 7y agoIt is fun -- it requires an interesting blend of patience and impatience. Each individual step in the measurement process is slow, but those who are most successful at it are very hungry to get at reliable answers quickly. Gravity is, by most measures, our oldest force, and while GR is a very successful theory, we know essentially nothing about the underlying mechanism. This is very much unlike the rest of the Standard Model, where we have very-successful quantum theories.