Victorian physicists unraveled how cats twist mid-air to land safely on feet

How Victorian physicists studied falling cats, and why the mystery still matters

Two giants of nineteenth-century mathematical physics turned their attention to an everyday marvel: the cat's ability to right itself mid-air. Sir George Gabriel Stokes and James Clerk Maxwell conducted what Maxwell later called "cat-turning" experiments in the 1850s, though Maxwell had to defend himself against accusations of cruelty.

"There is a tradition in Trinity that when I was here I discovered a method of throwing a cat so as not to light on its feet, and that I used to throw cats out of windows," Maxwell wrote. He clarified that his method involved letting cats drop onto tables or beds from about two inches, observing how quickly they could rotate.

From crude drops to high-speed frames

The experiments remained limited until photography caught up with feline reflexes. In 1894, Etienne-Jules Marey used a chronophotographic camera capturing 12 frames per second to produce a series of stop-action photographs showing the sequence of movements cats use to reorient themselves during a fall.

A puzzle that refuses to close

A dynamical model of cat-turning appeared in 1969, yet the subject continues to draw scientific attention. As recently as 2026, researchers published a study that moved beyond idealised hinges and cylinders to incorporate measured properties of a real cat's spine.

The persistence of this line of inquiry, from Maxwell's drawing-room drops to twenty-first-century biomechanics, suggests that something in the cat's mid-air twist still resists complete explanation, making it a durable test case for understanding how living bodies solve mechanical problems in real time.

Source: South China Morning Post