Chladni Figures Poster — The Geometry of Sound

When a thin plate is set into vibration at one of its resonant frequencies, sand scattered on its surface migrates to the nodal lines where the plate isn't moving — revealing the underlying vibration mode as a geometric pattern. Ernst Chladni first demonstrated this in 1787 with a violin bow on a brass plate, and the resulting figures helped found the field of acoustics. The mathematics is a sum of trigonometric eigenmodes: Z(x, y) = sin(mπx)·sin(nπy) + sin(nπx)·sin(mπy), where m and n are mode numbers. Each combination produces a distinct mandala. Every image in this collection is a high-resolution evaluation of these eigenmode sums, rendered as continuous fields rather than discrete sand grains.

Z(x,y) = sin(mπx)sin(nπy) + sin(nπx)sin(mπy)