british standard wire gauge
71Art, Antiques, and Collections — ▪ 2003 Introduction In 2002 major exhibitions such as Documenta 11 reflected the diverse nature of contemporary art: artists from a variety of cultures received widespread recognition for work ranging from installation to video to painting …
72motion-picture technology — Introduction the means for the production and showing of motion pictures. It includes not only the motion picture camera and projector but also such technologies as those involved in recording sound, in editing both picture and sound, in… …
73Bicycle wheel — For the Marcel Duchamp installation, see Bicycle Wheel. The front wheel from a racing bicycle made using a Mavic rim …
74Third rail — For other uses, see Third rail (disambiguation). Third rail at the West Falls Church Metro station near Washington, D.C., electrified at 750 volts. The third rail is at the top of the image, with a white canopy above it. The two lower rails… …
75undersea exploration — Introduction the investigation and description of the ocean waters and the seafloor and of the Earth beneath. Primary objectives and accomplishments Included in the scope of undersea exploration are the physical and chemical… …
76T-carrier — In telecommunications, T carrier, sometimes abbreviated as T CXR , is the generic designator for any of several digitally multiplexed telecommunications carrier systems originally developed by Bell Labs and used in North America, Japan, and Korea …
77Railroad switch — For other uses, see Switch (disambiguation). A right hand railroad switch with point indicator pointing to right …
78Right- and left-hand traffic —   countries with right hand traffic …
79Aurea — The Aurea was an Italian automobile manufactured in Turin from 1921 to 1930. This small producer built sidevalve and overhead valve four cylinder cars with engines that started at 1460 cc in the S.V. version engine, but later were increased to… …
80Dieselisation — Modern diesel multiple unit next to a steam locomotive at Carmarthen railway station in 2007 Dieselisation or dieselization is a term generally used for the increasingly common use of diesel fuel in vehicles, as opposed to gasoline or steam… …
