least favorable configuration
41Reliability of Wikipedia — Vandalism of a Wikipedia article. The section on the left is the normal, undamaged version; and on the right is the edited, damaged version. The reliabili …
42Truss bridge — for a single track railway, converted to pedestrian use and pipeline support Ancestor Beam bridge[ …
43Self-reconfiguring modular robot — Modular self reconfiguring robotic systems or self reconfigurable modular robots are autonomous kinematic machines with variable morphology. Beyond conventional actuation, sensing and control typically found in fixed morphology robots, self… …
44Empire of Brazil — Império do Brasil ← …
45History of unmanned aerial vehicles — Unmanned aerial vehicles, known variously as UAVs, drones, and remotely piloted vehicles (RPVs), have been a feature of aviation for much of its history, though in limited or secondary roles, and often overlooked. For the purposes of this article …
46River engineering — The Los Angeles River is extensively channelized with concrete embankments. River engineering is the process of planned human intervention in the course, characteristics or flow of a river with the intention of producing some defined benefit.… …
47France — • Geography, statistics, and history Catholic Encyclopedia. Kevin Knight. 2006. France France † …
48Indo-China — • The most easterly of the three great peninsulas of Southern Asia, is bounded on the north by the mountains of Assam, the Plateau of Yun nan, and the mountains of Kwang si; on the east by the province of Kwang si (Canton), the Gulf of Tong king …
49Star Trek: The Original Series — Star Trek Star Trek title card (Season 1) Format Science fiction Created by Gene Roddenberry …
50Chess — This article is about the Western board game. For other chess games or other uses, see Chess (disambiguation). Chess From left to right: a whit …
