A view of <n>Beachy Head</n> in East Sussex, England. Photo by <n>David Williams</n>, 2010.

Spiraling, a painting by artist <n>Holly Warburton</n>.

A baby <n>mountain goat</n> jumps over its sibling on <n>Mount Evans</n>, Colorado. Photo by <n>Verdon Tomajko</n>.

A mixed media on canvas painting titled <n>Spiral</n> by artist <n>Harti</n>.

Untitled, a 2019 drawing by <n>Paolo Spazzini</n>.

<n>Thomas Young</n>'s 1807 illustration of the double-slit experiment.

A sheep stands on the <n>Kjeragbolten</n> boulder, a landmark in Norway.

Model <n>Linda Novotna</n> photographed by <n>Andreas Ortner</n> for <n>Harper's Bazaar Czech</n>, April 2018.

<n>Hand/Eye</n> by photographer <n>Bea Nettles</n>, c. 1980s.