Rolling ball sculpture

"Marble run" redirects here. For other uses, see Marble (toy).

A rolling ball sculpture (sometimes referred to as a marble run, ball run, gravitram, kugelbahn (German: 'ball track'), or rolling ball machine) is a form of kinetic art – an art form that contains moving pieces – that specifically involves one or more rolling balls.

A simple wooden toy marble run

A version where marbles compete in a race to win is called a marble race.

Toys

People make toys out of rolling ball sculptures.

World records

Small part of tallest rolling ball sculpture, Energy Machine, in Hong Kong Science Museum since 1991

People watching a kinetic sculpture by George Rhoads

"Energy machine" redirects here. For Joseph Newman's DC engine, see Newman's energy machine.

The tallest rolling ball sculpture in the world, at 22 metres (72 ft) tall, is named the Energy Machine, and located in the Hong Kong Science Museum in Hong Kong.^[1] The structure consists of two towers, balls moving among them^[2][3]. It is also the largest of its kind in the world^[3]. The machine contains stream of ball, demonstrating energy conversion, from potential energy to kinetic, sound, light energy, with balls rolling along tracks^[3].

According to Guinness World Records, the longest marble run is 2,858.9 meters long and was completed in Switzerland in September 2017.^[4][5]

See also

• George Rhoads
• Rube Goldberg machine
• Bruce Gray (sculptor)
• Perplexus
• Rolling ball clock
• Jelle's Marble Runs