Definition of Imagery. Imagery means to use figurative language to represent objects, actions, and ideas in such a way that it appeals to our physical senses. Usually it is thought that imagery makes use of particular words that create visual representation of ideas in our minds. The word âimageryâ is associated with mental pictures.
Usage We normally think of velocity as the speed at which an object is traveling. But in physics, velocity and speed are not the same. Like speed, velocity refers to the rate at which an object is movingâthe distance per unit of time.But velocity in physics also includes the direction in which the object is moving, whereas direction has no bearing on an object's speed.ut in physics, velocity and speed are not the same. Like speed, velocity refers to the rate at which an object is movingâthe distance per unit of time.
Wave velocity is a general concept, of various kinds of wave velocities, for a wave's phase and speed concerning energy (and information) propagation. The phase velocity is given as: where: 1  vp is the phase velocity (in meters per second, m/s),