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Spatial rotations in three dimensions can be parametrized using both Euler angles and unit quaternions.This article explains how to convert between the two representations. Actually this simple use of "quaternions" was first presented by Euler some seventy years earlier than Hamilton to solve the problem of magic squar
tilt, lean, and roll are all used somewhat interchangeably, depending on the context and the writer, usually to mean rotation about a longitudinal axis of the vehicle.
1CC Abbreviation of one-credit completion or one-coin clear. To complete an arcade (or arcade-style) game without using continues. [1]1-up An object that gives the player an extra life (or attempt) in games where the player has a limited number of chances to complete a game or level.
Continued tightening of the bolt causes the central piece to close very slightly around the top of the post. To adjust the saddle's position, loosening the bolt allows the rails to slide forward and backward and to tilt up and down around the axis of the bolt. [9] Parts of a single bolt saddle clamp. The ridges on the bottom section are worn.
Tilt-A-Whirl is a flat ride designed for commercial use at amusement parks, fairs, and carnivals. [1] The ride consists of a number of cars which rotate freely while moving in a circle. As the cars revolve, the floor of the ride undulates so that the cars rise and fall as the ride spins.
Tightening the girth, or cinch, of a western saddle. Several types of girth are shaped to allow ample room for the elbows. The Balding style is a flat piece of leather cut into three strips which are crossed and folded in the center, and the Atherstone style is a shaped piece of baghide with a roughly 1.5” wide strip of stronger leather running along the center.
Tilt test on a fitting discontinuity. In geomechanics, a tilt test is a simple test to estimate the shear strength parameters of a discontinuity. [1] [2] Two pieces of rock containing a discontinuity are held in hand or mounted in test equipment with the discontinuity horizontal. The sample is slowly tilted until the top block moves.
The head-tilt/chin-lift is a procedure used to prevent the tongue obstructing the upper airways.The maneuver is performed by tilting the head backwards in unconscious patients, often by applying pressure to the forehead and the chin.