The physical model of the movement of liquids in capillaries proposed by Laplace and the Jurin formula obtained on its basis are in good agreement with the experiment in terrestrial conditions, but they are not applicable in zero gravity conditions. In this paper, it is experimentally shown that the capillary motion of a liquid is not caused by excessive Laplace pressure, but only by the forces of adhesion (Van der Waals forces) and cohesion. It has been experimentally shown that the phenomenon of capillary movement of a liquid over the surface of a solid body upon their contact occurs under normal conditions even in the absence of narrow slits or small-diameter cavities. The authors postulate a new hypothesis of the physical mechanism of the phenomenon of fluid movement on the surface of bodies, including in capillaries.

Keywords: capillary, Laplace overpressure, liquid, adhesion, Van der Waals force, cohesion, meniscus, gravity, electromagnetism, weightlessness