(2, 5) +
Plus sign, mirrored diagonals. Broad cells alternate across the full width.
- Plate
- Square, free edges
- Mode numbers
- m = 2, n = 5, plus combination
- Shape
- cos(2πx/a)cos(5πy/a) + cos(5πx/a)cos(2πy/a)
- Wavenumber k·a
- 16.92 (a = 240 mm)
- Frequency
- 1,223 Hz on the reference plate