(September 2014). A general sales agent (GSA) is a sales representative for an airline in a specific country or region. Typically, the GSA is responsible for selling all products of the airline in its region which includes flight tickets and cargo space. A GSA will typically sell the product of more than one airline.
Definition of standing wave. : a single-frequency mode of vibration of a body or physical system in which the amplitude varies from place to place, is constantly zero at fixed points, and has maxima at other points.
Standing Waves. a wave being continuously produced by an up-and-down motion on a string traveling toward a barrier and the reflect wave emerging from it. (Incident and reflected waves have the same frequencies and amplitudes but are traveling in opposite directions. This produces a wave that appears to stand still in the horizontal direction. Reflection