(2, 3) −
Two half-waves against three. The figure leans, then locks onto the diagonal.
- Plate
- Square, free edges
- Mode numbers
- m = 2, n = 3, minus combination
- Shape
- cos(2πx/a)cos(3πy/a) − cos(3πx/a)cos(2πy/a)
- Wavenumber k·a
- 11.33 (a = 240 mm)
- Frequency
- 548 Hz on the reference plate