Thermomagnetic Force in Oxygen

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Abstract
A thin disk surrounded by a polyatomic gas has been found to experience a force in a direction normal to its surface when a thermal gradient and an external magnetic field are applied. This force has been measured as a function of field and pressure for oxygen. The nature of the field and pressure dependence indicates that this force effect has its origin in the same molecular-collision processes as does the field-induced decrease of the viscosity (Senftleben-Beenakker effect).