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<rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Improved Measurement of the Hydrogen 1S - 2S Transition Frequency · HackerPapers discussions</title><link>https://hackerpaper.kaipfister.de/p/1107.3101/</link><description>Collected HN comments and submissions linking this paper.</description><language>en</language><lastBuildDate>Mon, 02 Nov 2026 11:16:22 GMT</lastBuildDate><atom:link href="https://hackerpaper.kaipfister.de/p/1107.3101/feed.xml" rel="self" type="application/rss+xml" /><item><title>Improved Measurement of the Hydrogen 1S - 2S Transition Frequency — mentioned by japanuspus</title><link>https://news.ycombinator.com/item?id=17834167</link><guid isPermaLink="false">urn:hackerpapers:mention:1107.3101:17834167</guid><pubDate>Fri, 24 Aug 2018 11:08:49 GMT</pubDate><description>&lt;p&gt;As an atomic physicist, it is great to see clever atomic physics experiments opening up new fields in high-energy physics. The team has been working incredibly hard for this: Jeff Hangst who leads the experiment was already working on this when he taught my undergrad electrodynamics course back in 1998! An important piece of background info for non-atomic-physicists is that the Hydrogen 1S-2S transition frequency is probably the most accurately measured physical property in the world, thanks to the pioneering work by T. Hansch. Back in 2011 they reported an uncertainty of 4e-12…&lt;/p&gt;&lt;p&gt;&lt;a href="https://hackerpaper.kaipfister.de/p/1107.3101/"&gt;Paper and discussion history&lt;/a&gt;. A mention is not an endorsement.&lt;/p&gt;</description><category>physics.atom-ph</category></item></channel></rss>
