The Cat's-Eye Effect
A demonstration of the cat’s-eye effect, using a single LED as the light source behind a grid of parallel wires. The setup forms a light stripe due to the reflection of light in each wire. The cat’s-eye effect or chatoyance was explored in our Condensed Matter paper “Jumping sundogs, cat’s eye and ferrofluids,” which includes more information about this picture; the paper is available at https://www.mdpi.com/2410-3896/5/3/45.
—Alberto Tufaile, Soft Matter Lab/EACH, University of São Paulo, Brazil