screw effect
61metalwork — metalworker, n. /met l werrk /, n. objects made of metal. [1840 50; METAL + WORK] * * * Useful and decorative objects fashioned of various metals. The oldest technique is hammering. After с 2500 BC, casting was also used, molten metal being… …
62Gear — For the gear like device used to drive a roller chain, see Sprocket. This article is about mechanical gears. For other uses, see Gear (disambiguation). Two meshing gears transmitting rotational motion. Note that the smaller gear is rotating… …
63Skeg — A skeg (or skag) is a sternward extension of the keel of boats and ships which have a rudder mounted on the centre line. In more recent years, the name has been used for a fin on a surfboard which improves directional stability and to a moveable… …
64History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… …
65Battle of Lissa (1866) — Infobox Military Conflict caption= The Sea Battle of Lissa by Carl Frederik Sorensen, 1868. partof=the Third Italian War of Independence conflict=Battle of Lissa date=July 20 1866 place=Adriatic Sea, near Lissa, present day Croatia result=… …
66Crystallization — Crystallizing and Crystallized redirect here. For the action adventure video game, see Crystalis. For the 2009 song by The xx, see Crystalised. For other uses, see Crystallization (disambiguation). Crystallization …
67Sena Kobayakawa — Infobox animanga character name = Sena Kobayakawa series = Eyeshield 21 caption = Sena first = episode 1, chapter 1 last = creator = Riichiro Inagaki, Yusuke Murata voiced by = Miyu Irino Romi Paku (jump fiesta) Kokoro Kikuchi (younger) Yuri… …
68Threading (manufacturing) — Threading is the process of creating a screw thread. More screw threads are produced each year than any other machine element.[1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and… …
69Pretty Cure Splash Star — Futari wa Pretty Cure Splash★Star ふたりはプリキュア Splash★Star (Futari wa Purikyua Supurasshu★Sutā) Genre Comedy, Magical girl, Sport TV anime Directed …
70Propeller walk — is the term for a propeller s tendency to rotate a boat as well as accelerating it forwards or backwards.A right handed propeller (which rotates clockwise [as viewed from the stern] when in forward gear) will tend to push the aft of the boat to… …
