) Draw the standing wave. Label one node, one antinode, and a wavelength. Standing wave sketch: The string is fixed at both ends, so there are nodes at the ends. Since there are 8 loops, this means there are 8 antinodes (peaks) and 9 nodes (including the fixed ends). Label one node (N) at a fixed end and one antinode (A) in the middle of a loop. Wavelength (λ): The distance between two consecutive nodes (or antinodes) is λ/2. See more