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Joined 2026-09-21 Message
Incoming links: Louis Dunoyer de Segonzac
Dunoyer molecular-beam experiment 2026-10-18
In 1911, Louis Dunoyer de Segonzac formed a sodium beam in vacuum and collected a deposit on a surface cooled with liquid air. Its shape agreed with straight paths through the slits.[ref]
The Method of Molecular Rays by Otto Stern. The method of molecular rays, lecture 12 December 1946, pp. 8–9: Dunoyer's sodium beam, collimation and cooled collector
A deposit tests the geometry of the surviving paths. A clock or a calibrated deflection is needed to turn their travel into a speed measurement.