three-wheeled roller
61Ballbot — The Ballbot is a mobile robot, an attempt to solve the robotic unicycle problem, and is designed to balance itself on its single spherical wheel while travelling about. It is the focus of the Ballbot Research Platform, a project conducted at… …
62France — /frans, frahns/; Fr. /frddahonns/, n. 1. Anatole /ann nann tawl /, (Jacques Anatole Thibault), 1844 1924, French novelist and essayist: Nobel prize 1921. 2. a republic in W Europe. 58,470,421; 212,736 sq. mi. (550,985 sq. km). Cap.: Paris. 3.… …
63United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
64Manchester, New Hampshire — This article is about the city in New Hampshire. For other uses, see Manchester (disambiguation). Manchester, New Hampshire   City   View of downto …
65Penny-farthing — For other uses, see Penny farthing (disambiguation). A penny farthing photographed in the Škoda Auto Museum in the Czech Republic …
66Car-free zone — Car free zones (also known as auto free zones and pedestrian zones) are areas of a city or town in which automobile traffic is prohibited. They are instituted by communities who feel that it is desirable to have areas not dominated by the… …
67Tractor — This article is about a vehicle used in agriculture or construction. For the power unit of a semi trailer truck (articulated lorry), see tractor unit. For other uses, see Tractor (disambiguation) …
68George Weller — ‘otheruses4|the writer|the elderly motorist in a fatal car accident|George Russell WellerGeorge Anthony Weller (1907 ndash;2002) was an American novelist, playwright, and Pulitzer Prize winning journalist for The New York Times and Chicago Daily… …
69Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
70Huntsville, Alabama — Huntsville   City   Clockwise from top: Big Spring Park, the Old Times Building, the Madison County Courthouse, the Von Braun Center, and Gove …
