vertical travel-time curve
81Timeline of Islamic science and engineering — This timeline of Islamic science and engineering covers the general development of science and technology in the Islamic world during the Islamic Golden Age, usually dated from the 7th to 16th centuries.From the 17th century onwards, the advances …
82Balanced flow — In atmospheric science, balanced flow is an idealisation of atmospheric motion. The idealisation consists in considering the behaviour of one isolated parcel of air having constant density, its motion on a horizontal plane subject to selected… …
83rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …
84Glossary of motorsport terms — The following is a glossary of terminology used in motorsport, along with explanations of their meanings. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V W …
85Area 51 — This article is about the U.S. Air Force installation in Nevada. For other uses, see Area 51 (disambiguation). Area 51 …
86Table tennis — Ping Pong redirects here. For other uses, see Ping Pong (disambiguation). Table tennis Table tennis at the highest level Highest governing body ITTF Nickname(s) Ping pong …
87colour — /kul euhr/, n., adj. v.t., v.i. Chiefly Brit. color. Usage. See or1. * * * I Aspect of any object that may be described in terms of hue, brightness, and saturation. It is associated with the visible wavelengths of electromagnetic radiation, which …
88Mt. Van Hoevenberg Olympic Bobsled Run — U.S. National Register of Historic Places …
89Archery — competition in West Germany in the early 1980s …
90Plaxton — Infobox Company company name = Plaxton Limited company company type = Private company slogan = foundation = 1907 location = flagicon|UK Eastfield, Scarborough, England, UK key people = num employees = industry = Automotive products = Bus and… …
