https://hackerpaper.kaipfister.de/p/2103.06052/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=28991884urn:hackerpapers:mention:2103.06052:28991884Mon, 25 Oct 2021 19:15:15 GMT<p>&gt; If there are real engineering applications for GR, especially in optics Large-frame optical Sagnac gyroscopes for precision geodesy: https://www.frontiersin.org/articles/10.3389/fspas.2020.0004... And some detail on the GINGER project, &quot;Sagnac Effect, Ring Lasers, and Terrestrial Tests of [post-Newtonian] Gravity&quot; (clarification mine), https://www.mdpi.com/2075-4434/3/2/84/htm I imagine there is some literature on higher order modes in dispersion compensating fibre spools placed over underground flows (magma, water) but don&#x27;t really have time to think about what decade practical engineering…</p><p><a href="https://hackerpaper.kaipfister.de/p/2103.06052/">Paper and discussion history</a>. A mention is not an endorsement.</p>astro-ph.HE