Movement is the most dynamic quality of light. It is any perceptible change in the intensity, color or distribution of light. Movement can be created by dimming or brightening selective light sources or by moving the focus of the lighting sources from one area of the stage to another. Such a change is a light cue which attracts the attention of the audience. Therefore, the light designer has to be very careful that the change of lighting does not distract the audience from the action on stage.
Movement can be rapid and perceptible such as a light beam moving quickly from one area to the other or a new spot light coming on. Or it may be very subtle, slow and almost imperceivable. For example, a very slow shift in sunlight from one side of the stage to the other taking place over the full length of the play. Most likely, the audience will not see or notice this shift, but they may "feel" the result of the change emotionally.
Movement can be rapid and perceptible such as a light beam moving quickly from one area to the other or a new spot light coming on. Or it may be very subtle, slow and almost imperceivable. For example, a very slow shift in sunlight from one side of the stage to the other taking place over the full length of the play. Most likely, the audience will not see or notice this shift, but they may "feel" the result of the change emotionally.