Dunoyer molecular-beam experiment
ID: dunoyer-molecular-beam-experiment
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. New to topics? Read the docs here!