outward aircraft
41World War I — the war fought mainly in Europe and the Middle East, between the Central Powers and the Allies, beginning on July 28, 1914, and ending on November 11, 1918, with the collapse of the Central Powers. Abbr.: WWI Also called Great War, War of the… …
42Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
43Eyewall replacement cycle — Concentric eyewalls seen in Hurricane Katrina as it travels west through the Gulf of Mexico. Eyewall replacement cycles, also called concentric eyewall cycles, naturally occur in intense tropical cyclones, generally with winds greater than… …
44ear, human — ▪ anatomy Introduction organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium). The human ear, like …
45geomagnetic field — Magnetic field associated with the Earth. It is essentially dipolar (i.e., it has two poles, the northern and southern magnetic poles) on the Earth s surface. Away from the surface, the field becomes distorted. Most geomagnetists explain the… …
46Door — For other uses, see Door (disambiguation). A door is a movable structure used to open and close off an entrance, typically consisting of a panel that swings on hinges or that slides or rotates inside of a space. When open, they admit ventilation… …
47Polar coordinate system — Points in the polar coordinate system with pole O and polar axis L. In green, the point with radial coordinate 3 and angular coordinate 60 …
48Concorde — For other uses, see Concorde (disambiguation). Concorde Role Supersonic airliner …
49Coandă-1910 — Coandă 1910 …
50Short Sunderland — infobox Aircraft name = Sunderland type = Military flying boat manufacturer = Short Brothers caption = designer = first flight = 16 October 1937 introduced = 1938 retired = 1967 status = primary user = Royal Air Force more users = French Navy… …
