These oscillations are characterized by a periodically time-varying displacement in the parallel or perpendicular direction, and so the instantaneous velocity and acceleration are also periodic and time varying in these directions.
32.
Order tracking is based on a velocity measurement, generally obtained by means of a tachometer or encoder, needed to estimate the instantaneous velocity and / or the angular position of the shaft.
33.
Because the \ Delta V required for a plane change is proportional to the instantaneous velocity, the inclination and eccentricity are usually changed together in a single manoeuvre at apogee where velocity is lowest.
34.
The linear "'velocity "'of a rigid body is a motion involves rotation, the instantaneous velocity of any two points on the body will generally not be the same.
35.
It should be contrasted with the aberration of light, which depends upon the instantaneous velocity of the observer at the time of observation, and is independent of the motion or distance of the object.
36.
A particle can have an instantaneous velocity of 0, and a non-zero acceleration; but after an infinitely small instant of time, it will soon have a non-zero velocity as well.
37.
Although the concept of an instantaneous velocity might at first seem counter-intuitive, it may be thought of as the velocity that the object would continue to travel at if it stopped accelerating at that moment.
38.
In 1907, Albert Einstein published a paper in which he considered the instantaneous velocity of Brownian motion, and showed that it could be used to test the Equipartition Theorem, one of the basic tenets of statistical mechanics.
39.
If a curve represents the path of a particle, then the instantaneous velocity of the particle at a given point is expressed by a vector, called the "'tangent vector "'to the curve at.
40.
While such quantities may effectively mark features of the instantaneous velocity field v ( x, t ), the ability of these quantities to capture material mixing, transport, and coherence is limited and a priori unknown in any given frame.
