Abstract
The approach to calculating the Irving-Kirkwood pressure tensor inside plane-parallel hollow slit between solids interacting by dispersion forces is developed. Disjoining pressure is defined as a normal component of pressure tensor at slit walls and is calculated as explicit function of both the width of slit and distance from its edge. It is revealed that, at preset slit width, disjoining pressure acquires its common value for an infinite slit at triple (by the width) distance from the slit edge.
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