Branched flow is a phenomenon where waves or particles propagating through a weakly refracting, disordered or periodic medium accumulate along specific, tree-like paths as a consequence of chaotic dynamics.
Detergent bubble on a disposable plastic glass is illuminated by GREEN laser light from the 3 Light Source Red and Green Laser White Flashlight Zoomable Hunting Tactical Flashlight Strong LED Ultra Long Range Flashlight. RED laser light has not been successful.