quadric-crank mechanism - определение. Что такое quadric-crank mechanism
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Что (кто) такое quadric-crank mechanism - определение

MECHANISM WHERE AN ARM ATTACHED TO A ROTATING SHAFT BY WHICH CIRCULAR MOTION IS IMPARTED TO THE SHAFT
Crank mechanism; Crank-mechanism; Crank drive; Starting handle; Hand crank; Hand-crank; Crank axle; Handcrank; Compound crank
  • German crossbowman cocking his weapon with a cranked rack-and-pinion device (ca. 1493)
  • 15th century paddle-wheel boat whose paddles are turned by single-throw crankshafts (Anonymous of the [[Hussite Wars]])
  • quern]] (1938). The upright handle of such rotary handmills, set at a distance from the centre of rotation, works as a crank.<ref name="Ritti, Grewe, Kessener 2007, 159"/><ref name="Lucas 2005, 5, fn. 9"/>
  • Hand crank on a pencil sharpener
  • Water-raising pump powered by crank and connecting rod mechanism ([[Georg Andreas Böckler]], 1661)
  • Roman crank handle from [[Augusta Raurica]], dated to the 2nd century AD<ref name="Schiöler 2009, 113"/>
  • A compound crank
  • Roman [[Hierapolis sawmill]] (3rd century AD), the earliest known machine to combine a crank with a connecting rod.<ref name="Ritti, Grewe, Kessener 2007, 161"/>
  • Vigevano]]'s war carriage

Mechanism (sociology)         
CONCEPT IN SOCIOLOGY; THE TERM SOCIAL MECHANISMS AND MECHANISM-BASED EXPLANATIONS OF SOCIAL PHENOMENON ORIGINATE FROM THE PHILOSOPHY OF SCIENCE
Mechanism of social control; Mechanism (economics); Social mechanism
The term social mechanisms and mechanism-based explanations of social phenomena originate from the philosophy of science.
Quadric         
LOCUS OF ZEROS OF A QUADRATIC POLYNOMIAL (AFFINE OR PROJECTIVE, NOT NECESSARILY REAL)
Quadric surface; Quadric (projective geometry); Quadric (Projective Geometry); Quadratic surface; Quadric hypersurface; Hyperbolic quadric; Quadric cone; Quadratic hypersurface; Quadrics
·adj Of or pertaining to the second degree.
II. Quadric ·noun A quantic of the second degree. ·see Quantic.
III. Quadric ·noun A surface whose equation in three variables is of the second degree. Spheres, spheroids, ellipsoids, paraboloids, hyperboloids, also cones and cylinders with circular bases, are quadrics.
Mechanism (biology)         
SYSTEM OF CAUSALLY INTERACTING PARTS AND PROCESSES THAT PRODUCE ONE OR MORE EFFECTS
Biological mechanism
In the science of biology, a mechanism is a system of causally interacting parts and processes that produce one or more effects. Scientists explain phenomena by describing mechanisms that could produce the phenomena.

Википедия

Crank (mechanism)

A crank is an arm attached at a right angle to a rotating shaft by which circular motion is imparted to or received from the shaft. When combined with a connecting rod, it can be used to convert circular motion into reciprocating motion, or vice versa. The arm may be a bent portion of the shaft, or a separate arm or disk attached to it. Attached to the end of the crank by a pivot is a rod, usually called a connecting rod (conrod).

The term often refers to a human-powered crank which is used to manually turn an axle, as in a bicycle crankset or a brace and bit drill. In this case a person's arm or leg serves as the connecting rod, applying reciprocating force to the crank. There is usually a bar perpendicular to the other end of the arm, often with a freely rotatable handle or pedal attached.