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constraints . Each constraint can be a point, angle , or curvature (which is the reciprocal of the **radius** of an osculating circle ). Angle and curvature constraints are most often added to the ends of a curve, and in such cases are called end conditions . Identical end conditions are frequently

The idealized compressive dynamic turbo-machine achieves a pressure rise by adding kinetic energy / velocity to a continuous flow of fluid through the rotor or impeller . This kinetic energy is then converted to an increase in potential energy /static pressure by slowing the flow through

The planet was known by astronomers of ancient times and was associated with the mythology and religious beliefs of many cultures. The Romans named the planet after the Roman god Jupiter . [ 14 ] When viewed from Earth , Jupiter can reach an apparent magnitude of −2.94, making it on

The phonograph record player , or gramophone (letter + sound) is a device introduced in 1877 that continued common use until the 1980s for reproducing (playing) sound recordings , although when first developed, the phonograph was used to both record and reproduce sounds. The recordings played

centripetal force . In plan (i.e., the horizontal curve) the start of the transition is at infinite **radius** and at the end of the transition it has the same **radius** as the curve itself, thus forming a very broad spiral. At the same time, in the vertical plane, the outside of the curve is gradually

The magnitude of the centripetal force on an object of mass m moving at a speed v along a path with **radius** of curvature r is: [ 5 ] where a c is the centripetal acceleration. The direction of the force is toward the center of the circle in which the object is moving, or the osculating

**wikipedia.org** | 2011/8/5 22:48:54

Surface tension has the dimension of force per unit length , or of energy per unit area . The two are equivalent—but when referring to energy per unit of area, people use the term surface energy —which is a more general term in the sense that it applies also to solids and not just liquids

A triangle is one of the basic shapes of geometry : a polygon with three corners or vertices and three sides or edges which are line segments . A triangle with vertices A , B , and C is denoted ABC . In Euclidean geometry any three non- collinear points determine a unique triangle

The 39-inch-wide (99 cm) 60-foot-long (18 m) lane is bordered along its length by semicylindrical channels (commonly called "gutters") which are designed to collect errant balls. The narrow lane prevents bowling a straight line at the angle required to consistently carry (knock down) all

The atomic **radius** of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the surrounding cloud of electrons . Since the boundary is not a well-defined physical entity, there are various non-equivalent definitions

**wikipedia.org** | 2011/8/30 1:53:43