upside-down loop
81Recycling symbol — The universal recycling symbol (♲ or U+2672 in Unicode) is an internationally recognized symbol used to designate recyclable materials. It is composed of three chasing arrows that form a Möbius strip or unending loop. In 1969 and early 1970,… …
82Non-uniform circular motion — Classical mechanics Newton s Second Law History of classical mechanics  …
83Medusa (Six Flags Great Adventure) — Infobox roller coaster name=Medusa caption=Medusa s entrance and cobra roll location=Six Flags Great Adventure section=Frontier Adventures type=Steel type2=Floorless status=Open opened=April 2, 1999 manufacturer=Bolliger Mabillard designer=Werner …
84Valve audio amplifier — A valve (UK) audio amplifier or vacuum tube (US) audio amplifier is a valve amplifier used for sound recording, reinforcement, or reproduction. Until the invention of solid state devices such as the transistor, all electronic amplification was… …
85Ring of Fire / Larson Fireball — Larson International s older Ring of Fire, and their newer version called Fireball are both amusement rides that take the shape of a huge circle that is upright. It is similar to a roller coaster s loop, thus giving the name Ring of Fire. The… …
86List of QI episodes (B series) — infobox tvseason season name = QI Series B caption = The front cover of the QI series B DVD, featuring Stephen Fry (left) and Alan Davies (right). dvd release date = 17 March, 2008 country = UK network = BBC first aired = 8 October, 2004 last… …
87Roll-O-Plane — The Roll O Plane also known as the Bullet is an amusement park ride that originated in America. It was invented by the Eyerly Aircraft company of Oregon as an updated and more exciting version of the Loop O Plane. The ride is commonly nicknamed… …
88The Beatles — This article is about the band. For other uses, see The Beatles (disambiguation). Fab Four redirects here. For other uses, see Fab Four (disambiguation) …
89Mandelbrot set — Initial image of a Mandelbrot set zoom sequence with a continuously coloured environment …
90Slow loris — For the denial of service attack, see Slowloris. Slow lorises[1] Sunda slow loris Nycticebus coucang …
