An array of 5-mm-diameter chrome steel ball bearings on a green foil is illuminated by, and photographed through, a single LED ring light placed a few centimeters above the array. Each ball bearing (acting as a convex mirror) forms a demagnified, virtual image of the 70-mm diameter ring light. This image is re-imaged by all the neighbouring ball bearings that can “see” it, and that image is re-imaged again, and again, ... [OPN 2021 Photo Contest Honorable Mention]
—Aongus McCarthy, Heriot-Watt University, Edinburgh, Scotland
01 Dec 2021