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 previous cantos he wrote about the earth, the air and the water. The reader now expects the fire—but it is not there. This leads to a break in the symmetry. Again the wind is very important in this last canto. At the beginning of the poem the wind was only capable of blowing the leaves from the trees. In the previous canto the poet identified himself with the leaves. In this canto the wind is now capable of using both of these things mentioned before. Everything that had been said before was part of the elements—wind, earth, and water. Now