rotating axle
61Trunnion — A trunnion is a cylindrical protrusion used as a mounting and/or pivoting point. Usages In weapons *In a cannon, the trunnions are the two projections on the side of the barrel which mount the barrel in the carriage. As they allowed the barrel to …
62wheel — wheelless, adj. /hweel, weel/, n. 1. a circular frame or disk arranged to revolve on an axis, as on or in vehicles or machinery. 2. any machine, apparatus, instrument, etc., shaped like this or having a circular frame, disk, or revolving drum as… …
63military technology — Introduction range of weapons, equipment, structures, and vehicles used specifically for the purpose of fighting. It includes the knowledge required to construct such technology, to employ it in combat, and to repair and replenish it.… …
64Carriage — A carriage is a wheeled vehicle for people, usually horse drawn. It is especially designed for private passenger use and for comfort or elegance, though some are also used to transport goods. It may be light, smart and fast or heavy, large and… …
65Bottom bracket — A square taper cartridge bottom bracket. The bottom bracket on a bicycle connects the crankset to the bicycle and allows the crankset to rotate freely. It contains a spindle that the crankset attaches to, and the bearings that allow the spindle… …
66Rotation around a fixed axis — Rotational motion can occur around more than one axis at once, and can involve phenomena such as wobbling and precession. Rotation around a fixed axis is a special case of rotational motion, which does not involve those phenomena. The kinematics… …
67Electric generator — U.S. NRC image of a modern steam turbine generator In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric charge (usually carried by electrons) to flow… …
68Dual speed focuser — The Dual speed focuser is focusing mechanism in precision optics such as advanced amateur astronomical telescopes or laboratory microscopes. Dual speed focuser can provide two focusing speed on a set of co axial knobs.One for fast focusing and… …
69Fishing reel — A spinning reel A fishing reel is a cylindrical device attached to a fishing rod used in winding the line .[1] Modern fishing reels usually have fittings which make it easier to retrieve the line and deploy ( cast ) it for better accuracy or… …
70Inventions in the modern Islamic world — [ Abdus Salam, the 1979 Nobel Prize in Physics recipient, include the electroweak interaction, electroweak symmetry breaking, magnetic photon, neutral current, preon, W and Z bosons, supergeometry, supermanifold, superspace and superfield.] This… …
