Flapping
41Flying and gliding animals — A number of animals have evolved aerial locomotion, either by powered flight or by gliding. Flying and gliding animals have evolved separately many times, without any single ancestor. Flight has evolved at least four times, in the insects,… …
42Albatross — This article is about the bird family. For other uses, see Albatross (disambiguation). Albatross Temporal range: Oligocene–recent …
43helicopter — /hel i kop teuhr, hee li /, n. 1. any of a class of heavier than air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine. v.i. 2. to fly in a… …
44MythBusters (2008 season) — Country of origin Australia United States No. of episodes 20 (includes 8 specials) Broadcast Original channel Discovery Channel …
45flap — 01. The flag was [flapping] in the wind. 02. The bedsheets [flapped] on the clothesline. 03. The bat [flapped] its wings suddenly, and disappeared into the trees. 04. The little boy was running around the room, [flapping] his arms, and pretending …
46Autogyro — An autogyro is a type of rotorcraft invented by Juan de la Cierva in 1919, making its first successful flight on January 9, 1923 at Cuatro Vientos Airfield in Madrid. [http://www.vectorsite.net/avheli 1.html#m4 Vector Flight] ] Similar to… …
47Flap — may refer to:* Flap (aircraft), a hinged surface on the trailing edge of an airplane wing * Flapping, one of the basic mechanics of flight in birds * Flap, any hinged plate often used as a cover or a simple one way valve ** Cat flap, a hinged… …
48White Stork — Two adults in Germany Conservation status …
49Lenition — Sound change and alternation Metathesis Quantitative metathesis …
50Phonological history of English high front vowels — The high front vowels of English have undergone a variety of changes over time, which may vary from dialect to dialect. Contents 1 Weak vowel merger 2 Kit–bit split 3 Pin–pen merger …
