Antony Gormley's Quantum Cloud was commissioned for a site next to the Millennium Dome in London. At 30 metres high, it is Gormley's tallest sculpture to date (taller than the Angel of the North). It is constructed from a collection of tetrahedral units made from 1.5 m long sections of steel. The steel sections were arranged using a computer model with a random walk algorithm starting from points on the surface of an enlarged figure based on Gormley's body that forms a residual outline at the centre of the sculpture.
The sculpture was completed in 1999 in time for the opening of the Millennium Dome.
In designing Quantum Cloud, Antony Gormley was influenced by Basil Hiley, quantum physicist (and long-time colleague of David Bohm). The idea for Quantum Cloud came from Hiley's thoughts on pre-space as a mathematical structure underlying space-time and matter, and his comment that “algebra is the relationship of relationships.” The comment was made during a conversation between Gormley, Hiley and writer David Peat at a 1999 London gathering of artists and scientists, organized by Peat.
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