effective wind direction
41flight, history of — ▪ aviation Introduction development of heavier than air flying machines. Important landmarks and events along the way to the invention of the airplane include an understanding of the dynamic reaction of lifting surfaces (or wings), building… …
42Swept wing — A swept wing is a wing planform common on high speed aircraft, with the wing swept back instead of being set at right angles to the fuselage. This is a useful drag reducing measure for aircraft flying just below the speed of sound. Forward sweep… …
43Joseph Pomeroy Widney — (December 26, 1841 mdash; July 4, 1938) was a polymathic pioneer American physician, medical topographer, scholar educator, clergyman, entrepreneur philanthropist, proto environmentalist, prohibitionist, philosopher of religion, controversial… …
44Dead Man Zone — The Dead Man Zone is defined as the area directly around a bushfire that is likely to burn within five minutes given the current wind conditions or an anticipated change in wind direction. The distance this zone extends from the firefront is… …
45Chandrapur — This article is about the municipality in Maharashtra, India. For its namesake district, see Chandrapur district. Not to be confused with Chandrapore. Chandrapur   city   …
46USS Constitution — For similarly named ships, principles of government, and other uses, see Constitution (disambiguation). Constitution on her 213th birt …
47Great Sand Dunes National Park and Preserve — IUCN Category II (National Park) …
48Aircraft carrier — From bottom to top: Principe de Asturias, amphibious assault ship USS Wasp, USS Forrestal and light V/STOL carrier HMS Invincible, showing size differences of late 20th century carriers An aircraft …
49Weather lore — is the body of informal folklore related to the prediction of the weather.It has been a human desire for millennia to make accurate weather predictions. Oral and written history is full of rhymes, anecdotes, and adages meant to guide the… …
50Aeolian processes — Aeolian (or Eolian or Æolian) processes pertain to the activity of the winds and more specifically, to the winds ability to shape the surface of the Earth and other planets. Winds may erode, transport, and deposit materials, and are effective… …
