What is a node in a standing wave defined as?

In the context of standing waves, a node is specifically defined as a point along the medium where there is minimum amplitude of the wave and no movement occurs. This is a result of destructive interference between two waves traveling in opposite directions. At the node, the oscillations cancel each other out, leading to a point where the wave does not vibrate, remaining stationary.

The characteristics of a node are integral to understanding the formation of standing waves, as they occur at regular intervals along the wave and are contrasted with antinodes, where maximum amplitude is observed. The definition aligns perfectly with how nodes are characterized in wave phenomena, making it the correct choice. Understanding this concept helps in analyzing various applications of waves, such as in musical instruments, where nodes play a crucial role in sound production.