Sinusoidal Waves: Frequency(x) & Amplitude(y)

Three colors (red, green, and blue) are beamed onto the body and the wall behind at different times. As the body wiggles it distrupts where these colors overlap. Red + Blue + Green = White. Red + Blue light = Yellow. Blue + Green = Cyan. These secondary and tertiary blends of light describe the frequency and amplitude of the body's wiggle.

a detail

wikipedia.org/Sine_wave wikipedia.org/RGB_color_model related projects: scan look up down left right circles within circles sine wave with spectrum worm