Nodes and Antinodes
Tsokos Ch. 11.4
Overview
Nodes (knopen): points of zero displacement — particles never move. At fixed/closed ends, there is always a NODE (the wave reflects with phase inversion). Antinodes (buiken): points of maximum displacement — particles oscillate with maximum amplitude. At free/open ends, there is always an ANTINODE (reflection without phase inversion). Distance between adjacent node and antinode = λ/4.