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,
The Wind Done Gone builders, "Twelve Slaves Strong as Trees". The estate of Margaret Mitchell sued Randall and her publishing company, Houghton Mifflin, on the grounds that "The Wind Done Gone" was too similar to "Gone with the Wind", thus infringing its copyright. The case attracted numerous comments from leading scholars, authors, and activists, regarding what Mitchell's attitudes would have been and how much "The Wind Done Gone" copies from its predecessor. After the U.S. Court of Appeals for the Eleventh Circuit vacated an injunction against publishing the book in "Suntrust v. Houghton Mifflin" (2001), the case was settled in 2002 when Houghton Mifflin