Autumn Rhythm (Number 30) is a 1950 abstract expressionist drip painting by American artist Jackson Pollock.[1][2] The work was purchased in 1957[3] by curator Robert Beverly Hale[4] for the collection of the Metropolitan Museum of Art, where it remains on display.[1] The painting consists of chaotic black, white and brown paint patterns on an unpainted canvas background.[5][6]
Pollock originally titled the painting Number 30, believing that titles affected how viewers perceived paintings,[7] but was later retitled Autumn Rhythm'.[who?][8]
Hans Namuth's photographs of Pollock, which culminated in his 1980 book Pollock Painting, included images of Pollock painting Autumn Rhythm, which revealed that the painting was largely painted right-to-left.[9]
Researchers looking at the underlying fractal geometry of Pollock's work have estimated the fractal dimension of the drip patterns in Autumn Rhythm at 1.67.[10][5]