controlling lever
71Valve — This article is about the flow control device. For the game developer, see Valve Corporation. For the electronic component, see Vacuum tube. For other uses, see Valve (disambiguation). These water valves are operated by handles. A valve is a… …
72Gyro monorail — The gyro monorail, gyroscopic monorail, gyro stabilized monorail, or gyrocar all denote a single rail land vehicle, road or rail, which uses the gyroscopic action of a spinning wheel, which is forced to precess, to overcome the inherent inverted… …
73United 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… …
74ANTISEMITISM — ANTISEMITISM, a term coined in 1879, from the Greek ἁντί = anti, and Σημ = Semite by the German agitator wilhelm marr to designate the then current anti Jewish campaigns in Europe. Antisemitism soon came into general use as a term denoting all… …
75Floppy disk — Floppy redirects here. For other uses, see Floppy (disambiguation). 8 inch, 5 1⁄4 inch, and 3 1⁄2 inch floppy disks …
76Hawker Siddeley Harrier — infobox Aircraft name = Harrier / AV 8A/C type = VTOL strike aircraft national origin = United Kingdom manufacturer = Hawker Siddeley caption = An RAF Harrier GR3 on display at Bletchley Park, England designer = first flight = 28 December… …
77Steam locomotive — A steam locomotive is a locomotive powered by steam. The term usually refers to its use on railways, but can also refer to a road locomotive such as a traction engine or steamroller.Steam locomotives dominated rail traction from the mid 19th… …
78Al-Jazari — Abū al Iz Ibn Ismā īl ibn al Razāz al Jazarī (1136 1206) ( ar. أَبُو اَلْعِزِ بْنُ إسْماعِيلِ بْنُ الرِّزاز الجزري) was an important Arab [citation|title=Archimedes Weapons of War and Leonardo|first=D. L.|last=Simms|journal=The British Journal… …
79Dead man's switch — For other uses, see Dead man s switch (disambiguation). A dead man s switch in a high altitude truck A dead man s switch (for other names, see alternative names) is a switch that is automatically operated in case the human operator becomes… …
80Diesel locomotive — Three styles of diesel locomotive body: cab unit, hood unit and box cab. These locomotives are operated by Pacific National in Australia …
