frictional wear
41Motion sickness — For the album by Bright Eyes, see Motion Sickness. Motion sickness Classification and external resources ICD 10 T75.3 ICD 9 …
42Hyperthermia — An analog medical thermometer showing a temperature of 38.7 °C (101.7 °F) ICD 9 …
43Tandem bicycle — The tandem bicycle or twin is a form of bicycle (occasionally, a tricycle) designed to be ridden by more than one person. The term tandem refers to the seating arrangement (fore to aft, not side by side) instead of the number of… …
44Hovercraft — A hovercraft, or air cushion vehicle (ACV), is an amphibious vehicle or craft, designed to travel over any sufficiently smooth surface supported by a cushion of slowly moving, high pressure air, ejected downwards against the surface below, and… …
45Jewel bearing — A jewel bearing is a bearing in which a metal spindle turns in a jewel lined pivot hole. The hole is typically shaped like a torus and is slightly larger than the shaft diameter. In operation, the shaft tilts slightly so as to contact the jewel… …
46Contact patch — Colorized tire footprint pressure distribution Contact patch is the portion of a vehicle s tire that is in actual contact with the road surface. It is most commonly used in the discussion of pneumatic tires, (i.e. pressurized tires), where the… …
47Conche — For other uses, see Conche (disambiguation). Conche (in a museum) A conche is a surface scraping mixer and agitator that evenly distributes cocoa butter within chocolate, and may act as a polisher of the particles. [1] It also promotes flavor… …
48Brake run — A brake run on a roller coaster is any section of track meant to slow or stop a roller coaster train.[1] Brake runs may be located anywhere along the circuit of a coaster and may be designed to bring the train to a complete halt or to simply… …
49Ultrasonic motor — An ultrasonic motor is a type of electric motor formedfrom the ultrasonic vibration of a component, the stator, placedagainst another, the rotor or slider depending on the schemeof operation (rotation or linear translation). Ultrasonic… …
50Cogset — A freehub (above) for use with a cassette and a threaded hub (below) for use with a freewheel. On a bicycle, the cogset or cluster[1] is the set of multiple rear sprockets that attaches to the hub on the rear wheel. A cogset works with a rear… …
