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"So instead of bouncing the light back out, they scatter it back into the layer - it's a light trap."

Alice Chou, a PhD student who worked with Lin at the same institution, was supposed to be helping, but, “As soon as I saw the glow of light trap illuminate his silhouette from the water, I ran back to the cabins to grab my camera,” she explains.

“Light Trap for Henry Moore, No. 1,” from 1967.

By further focusing the beam with a lens, he developed a “light trap” that could suspend a small spherical object at its center.

By further focusing the beam with a lens, he developed a “light trap” that could hold a small spherical object in place.