- A-frame poles
- А-образная рамная опора
Англо-русский строительный словарь. 2013.
A-frame poles
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Poles of astronomical bodies — This article is about geographic, magnetic and other poles on planets and other astronomical bodies. For the Earth s poles, see North Pole, South Pole, North Magnetic Pole, and South Magnetic Pole. See also Pole of inaccessibility. The poles of… … Wikipedia
Frame-dragging — Albert Einstein s theory of general relativity predicts that rotating bodies drag spacetime around themselves in a phenomenon referred to as frame dragging. The rotational frame dragging effect was first derived from the theory of general… … Wikipedia
Moving frame — The Frenet Serret frame on a curve is the simplest example of a moving frame. In mathematics, a moving frame is a flexible generalization of the notion of an ordered basis of a vector space often used to study the extrinsic differential geometry… … Wikipedia
Accelerated reference frame — In theoretical physics, an accelerated reference frame is usually a coordinate system or frame of reference, that undergoes a constant and continual change in velocity over time as judged from an inertial frame. An object in an accelerated frame… … Wikipedia
reference frame — Physics. See frame of reference (def. 2). [1920 25] * * * or frame of reference Coordinate system that allows description of time and position of points relative to a body. The axes, or lines, emanate from a position called the origin. As a point … Universalium
field frame — noun : the principal magnetic structure of a motor or generator including the poles if they are in integral part called also yoke … Useful english dictionary
Synchro — [ frame|Schematic of Synchro TransducerThe complete circle represents the rotor. The solid bars represent the cores of the windings next to them. Power to the rotor is connected by slip rings and brushes, represented by the circles at the ends of … Wikipedia
Tent — For the tetanus neurotoxin (TeNT), see Tetanospasmin. A modern two person, lightweight hiking dome tent; it is tied to rocks as there is nowhere to drive stakes on this rock shelf A tent is a shelter consisting of sheets of fabric or other… … Wikipedia
Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
Dog agility — Agility field left side: A competition agility field showing (clockwise from lower left) a tunnel, the dogwalk, the judge standing in front of a winged jump, two additional winged jumps, dog executing the teeter totter with his handler guiding,… … Wikipedia
electric motor — motor (def. 4). [1885 90] * * * Introduction any of a class of devices that convert electrical energy to mechanical energy, usually by employing electromagnetic phenomena. Most electric motors develop their mechanical torque by the… … Universalium
