Thought of Train of Thought, by Ron Arad

LONDON, ENGLAND - JULY 07: 'Thought of Train of Thought, 2016' by Royal Academician Ron Arad is unveiled at St Pancras International station on July 7, 2016 in London, England. The peice has been commissioned for Terrace Wires, co-presented by HS1 Ltd. and the Royal Academy of Arts. (Photo by Tim P. Whitby/Getty Images for Terrace Wires)

Ron Arad has revealed his Thought of Train of Thought installation at St Pancras International station in London, as part of a four-year partnership between HS1 Ltd and the Royal Academy for the station’s public sculpture series, Terrace Wires.

Thought of Train of Thought is made up of an 18m aluminium twisted blade that rotates slowly to create a wave-like optical illusion.

Ron Arad says: “The rotation and the horizontal movement take turns in the viewers’ perception as the readings of the object alternate and the hypnotic effect is greater than the means, so will hopefully be the delight of the public at St Pancras.”

LONDON, ENGLAND - JULY 07: 'Thought of Train of Thought, 2016' by Royal Academician Ron Arad is unveiled at St Pancras International station on July 7, 2016 in London, England. The piece has been commissioned for Terrace Wires, co-presented by HS1 Ltd. and the Royal Academy of Arts. (Photo by Tim P. Whitby/Getty Images for Terrace Wires)LONDON, ENGLAND - JULY 07: 'Thought of Train of Thought, 2016' by Royal Academician Ron Arad is unveiled at St Pancras International station on July 7, 2016 in London, England. The piece has been commissioned for Terrace Wires, co-presented by HS1 Ltd. and the Royal Academy of Arts. (Photo by Tim P. Whitby/Getty Images for Terrace Wires)LONDON, ENGLAND - JULY 07: Royal Academician Ron Arad unveils 'Thought of Train of Thought, 2016' at St Pancras International station on July 7, 2016 in London, England. The piece has been commissioned for Terrace Wires, co-presented by HS1 Ltd. and the Royal Academy of Arts. (Photo by Tim P. Whitby/Getty Images for Terrace Wires) *** Local Caption *** Ron Arad RAAll photos by Tim P. Whitby/Getty Images for Terrace Wires