a downward arrow
41MythBusters (2010 season) — Country of origin Australia United States No. of episodes 25 (includes 4 specials) Broadcast Original channel …
42Canada's Wonderland — Infobox Amusement park name = Canada s Wonderland location = Vaughan, Ontario location2 = Canada location3 = flagicon|Canada opening date = May 23, 1981 Landscape Architect = Moorehead, Fleming, Corban Architects Structural Engineer = O.T. Baggio …
43Tracheobronchial injury — Classification and external resources Reconstruction of the trachea and bronchi with x ray computed tomography showing disruption of the right main bronchus with abnormal lucency (arrow) …
44relativity — /rel euh tiv i tee/, n. 1. the state or fact of being relative. 2. Physics. a theory, formulated essentially by Albert Einstein, that all motion must be defined relative to a frame of reference and that space and time are relative, rather than… …
45MythBusters (2011 season) — Country of origin Australia United States Broadcast Original channel Discovery Channel Original run …
46Internal combustion engine — The internal combustion engine is an engine in which the combustion of a fuel (normally a fossil fuel) occurs with an oxidizer (usually air) in a combustion chamber. In an internal combustion engine, the expansion of the high temperature and high …
47Jugular venous pressure — A man with congestive heart failure and marked jugular venous distension. External jugular vein marked by an arrow. The jugular venous pressure (JVP, sometimes referred to as jugular venous pulse) is the indirectly observed pressure over the… …
48UNITED STATES OF AMERICA — UNITED STATES OF AMERICA, country in N. America. This article is arranged according to the following outline: introduction Colonial Era, 1654–1776 Early National Period, 1776–1820 German Jewish Period, 1820–1880 East European Jewish Period,… …
49Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass …
50Greyhawk — This article is about the role playing game setting. For other uses, see Greyhawk (disambiguation). Greyhawk Designer(s) Gary Gygax Publisher(s) TSR, Inc. Wizards of the Coast Publication date …
