A string’s nth mode has n+1 nodes and n antinodes

Evidence

It can be seen in Figure 4.6 that the first mode has two displacement nodes (at the ends of the string) and one displacement antinode (in the center). The sixth mode has seven displacement nodes and six displacement antinodes. In general, a particular mode (n) of a string fixed at both ends has (n + 1) displacement nodes and (n) displacement antinodes. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1081

Categorization

  • DEFINE: Formal relationship between mode number and node/antinode count on a fixed string.
  • XREF: connects to: Plucking a string at a node suppresses every Nth harmonic; Pinning a node makes higher modes act as fundamentals of shorter strings — Eric J. Heller, Why You Hear What You Hear- An…, 874; Plucking position on a string suppresses modes with nodes there — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1083 (+3 more)

Broader Connections