Chronos (/ˈkrɒnoʊs/ KRON-ohs)[2] is a 1985 abstract film directed by Ron Fricke, created with custom-built time-lapse cameras.

American Cinematographer described the film as "a musical poem praising the evolution of Western man from Cairo to Los Angeles.

Funding for Chronos came from the seed money acquired through the publicity surrounding the production of Koyaanisqatsi.

Michael Stearns, while composing the soundtrack for the film, used a custom-made instrument called "The Beam" to generate many of the sounds he required.

The Beam was 12 feet (3.7 m) long, made of extruded aluminum with 24 piano strings of gauge 19-22.