Grey, C. G. (Charles Grey), 1875-1953 · London, "The Aero" · leaf 56
om the actual surface rise more nearly vertically thanthe strata (or streams) close to the surface, which streamsfollow the line of the hill quite closely. This is presumably 52 AIR CURRENTS. {Continued). due to the streams next the face of the hill being com-pressed by the weight of the wind… … The wind, under considerable pressure, clears the edge olthe cliff, and gives rise to what Mr. Lanchester calls a surface of discontinuity (indicated by the line nextthe cliff edge), which shoots upward, much as the winddoes from the wind screen of a car. After rising to acertain extent the wind…
Airplanes
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