Dunkirk: Where History Happened. We visit 10 places connected with the remarkable evacuation of the British Expeditionary Force from northern France in 1940. This feature was first published in the April 2010 edition of BBC History Magazine. Tuesday 25th May 2010.
The seepage velocity is less than the actual flow rate of the liquid or gas in the pores because the fluid moves only through the portion of the cross-sectional area S that is occupied by the pores.
What is Optical flow. 1. The pattern of apparent motion of objects, surfaces, and edges in a visual scene caused by the relative motion between an observer (an eye or a camera) and the scene.Learn more in: Modeling and Visual Navigation of Autonomous Surface Vessels.Find more terms and definitions using our Dictionary Search.. The pattern of apparent motion of objects, surfaces, and edges in a visual scene caused by the relative motion between an observer (an eye or a camera) and the scene. Learn more in: Modeling and Visual Navigation of Autonomous Surface Vessels. Find more terms and definitions using our Dictionary Search.