Light partially reflects from both the outer and inner surfaces of a thin soap film. These two reflected rays interfere — reinforcing or canceling certain wavelengths depending on the thickness of the film and the angle of view, which produces colorful iridescent reflections on the bubble surface.

Properties

• Number of bubbles: one large and several smaller accompanying ones
• Shader Iridescence: color depends on the angle of view (Fresnel) and time
• Wave animation of the film based on noise-like sine waves in the vertex shader
• Physical basis: color shift with thickness and enhancement on silhouette