A European Informational Website
learn more
A node is a point along a standing wave where the wave has minimal amplitude. This has implications in several fields. For instance, in a guitar string, the ends of the string are nodes. By changing the position of one of these nodes through frets, the guitarist changes the effective length of the vibrating string and thereby the note played. The opposite of a node is an anti-node, which is the farthest point from the node on a wave.