Mesoscale2026-07-164 minarXiv:2607.14868Spin from Bend: How Curvature Twists SoundIn 1915, Albert Einstein and Wander Johannes de Haas demonstrated that when an iron rod is magnetized, it twists slightly — the angular momentum of electrons is transferred to the crystal lattice.Pablo A. Moralesquadrupole radiation formulaquantum Hall effectAlbert EinsteinBarry BarishKip Thornespinphononspacetime curvatureinterferencespectroscopy👍👎☆SimplePopularAdvanced