A Darth Vader on the Gatwick Express. Darth Vader (plural Darth Vaders) A powerful individual or force, particularly one that is seen as malevolent, dominating and threatening. Robert Whiting, The Meaning of Ichiro: The New Wave from Japan and the Transformation of Our National Pastime (2004) p. 130:
exists and is an alternate of . Wind is a horizontal flow of air from higher pressure to lower pressure the force that generates wind is called the Pressure-Gradient Force. Wind is a horizontal flow of air from higher pressure to lower pressure the force that generates wind is called the Pressure-Gradient Force.
The pressure gradient force is what causes the wind to blow. It is a measure of how much air is in one. location versus another and is what forces the air to move from regions of high pressure to regions of low. pressure. Differing pressures are a result of density differences (measured as differences in temperature)