Mesoscale2026-06-132 minarXiv:2606.15371expressLight Spots What Wires Can't SeeA neat stack of atomic layers lies on a substrate. An invisible beam of terahertz light shines down on it, with a magnetic field applied from the side. After reflection, the beam's polarization rotates slightly.Tong Shen·Yiyang Xie·Yucheng Dai·Yifan Zhang·Yuanze Li·Xufeng Kou·Tian LiangFaraday effectFaraday's law of electromagnetic inductionHendrik LorentzMichael FaradayJames Clerk MaxwellAharonov–Bohm effectpolarimetryspacetime curvature👍👎☆SimplePopularAdvanced