A video distortion in which the sides of the screen curve in the same direction. Essentially, this is a case of pincushioning on one side and barreling on the other.
Progressive bending of a composite panel, often caused by changes in ambient conditions, resulting in the decorative face of the panel becoming either concave or convex.
The technique of using the bow on stringed instruments (violins, violas, cellos, etc.). The mastery of the bow includes a considerable number of different manners of bowing.
the longer and deeper the bow, the more respect is shown; the most respectful bow involves kneeling, placing one's hands on the floor, and one's forehead on the backs of one's hands