A node is a point along a standing wave where the wave has minimum amplitude. For instance, in a vibrating guitar string, the ends of the string are nodes. By changing the position of the end node through frets, the guitarist changes the effective length of the vibrating string and thereby the note played.

What is the difference between a node and antinode?

Antinodes are points on a stationary wave that oscillate with maximum amplitude. Nodes are points of zero amplitude and appear to be fixed.

How do you find the node and antinode?

For example, the two ends of a string vibrating is the node. At the point of the node, the particle of the standing wave does not vibrate. The opposite of the node is anti-node, so anti-node is a point where the amplitude of the standing wave is maximum.