https://hackerpaper.kaipfister.de/p/0808.2673/Collected HN comments and submissions linking this paper.enMon, 02 Nov 2026 11:16:22 GMThttps://news.ycombinator.com/item?id=21744855urn:hackerpapers:mention:0808.2673:21744855Mon, 09 Dec 2019 18:09:43 GMT<p>Objects with spin can be point-like but carry angular momentum. The electron is one such particle. It is &quot;intrinsic&quot; because it has no known moving parts. If it had moving parts, and that motion had net angular momentum, we would refer to it in many contexts as &quot;orbital angular momentum&quot;. Spin should seem counterintuitive. There are no macroscopic objects that I am aware whose spin you can feel with your hands. Our research group has an object with 10^23 polarized spins (and negligible net magnetic moment) -- observing the angular momentum effects directly requires a sensitive modern torsion…</p><p><a href="https://hackerpaper.kaipfister.de/p/0808.2673/">Paper and discussion history</a>. A mention is not an endorsement.</p>hep-ex