PROF. ARTHUR WINFREE / SCIENCE PHOTO LIBRARY PROF. ARTHUR WINFREE / SCIENCE PHOTO LIBRARY
Two-dimensional waves of chemical change in a shallow dish containing excited Malonic acid reagant. The circular waves are produced from nuclei of an unknown nature (possibly dust particles). Rings are produced, radiating periodically from their point sources & mutually annihilating when they collide.
Model release not required. Property release not required.