Articles by others on the same topic
An experimental atomic physicist who coauthored measurements of the gravitational deflection of long atomic beams. Slower potassium and caesium chemical atoms spend longer in flight and fall farther; the beam's vertical intensity profile therefore reveals its velocity distribution. The experiment turned a small gravitational displacement into a measurement of thermal beam statistics.[ref]
The Free Fall of Atoms and the Measurement of the Velocity Distribution in a Molecular Beam of Cesium Atoms by Immanuel Estermann, Oliver Cecil Simpson, and Otto Stern. Abstract: gravitational deflection and modified Maxwellian velocity distribution