Wind atmosphere based upon how far clouds move from one image to the next. Wind engineering describes the study of the effects of the wind on the built environment, including buildings, bridges and other man-made objects. Historically, the Beaufort wind force scale (created by Beaufort) provides an empirical description of wind speed based on observed sea conditions. Originally it was a 13-level scale, but during the 1940s, the scale was expanded to 17 levels. There are general terms that differentiate winds of different average speeds such as a breeze, a gale, a storm, tornado, or a hurricane. Within the Beaufort scale,
Ode to the West Wind began with "O wild West Wind" and "Thou" (15, 29) and were clearly directed to the wind, there is a change in the fourth canto. The focus is no more on the "wind", but on the speaker who says "If I . . ." (43–44). Until this part, the poem has appeared very anonymous and was only concentrated on the wind and its forces so that the author of the poem was more or less forgotten. Pirie calls this "the suppression of personality" which finally vanishes at that part of the poem. It becomes more and more clear that what