Victor Vasarely metagalaxie 1959-61 peiture sur toile
Toni Costa dinamica virtuale 1961 PVC sur bois
Jesus Rafael Soto carre interne avec tes nois 1979 peinture sur bois et metal
Yaacov Agam double metamorphose III 1968-69 huile sur relief en aluminium
Peter Sedgley light pulse 1968 acrylic sur toile
Grazia Varisco schema luminoso variabile-39 verre bois lampe moteur electrique
Frederick Eversley sans titre 1970 polyster
Davide Boriani Ipercubo 1961-65
Takis electro-magnetic -1 1970 fibre de verre bois plexiglas electro-aimant
Zero Group - Heinz Mack b. 1931, Otte Piene b. 1928, Gunther Uecker b. 1930 Light Space Homage to Fontana 1964 various materials
Alexander Calder 1898-1976 les boucliers 1944 mobile sur pied metal peint tiges en metal fil d acier
Alexander Calder 1898-1976 les trois soleils jaunes 1955 fer peint
Hans Haacke ne1936 blaues segel 1964-65 tissu ventilateur
Jesus Rafael Soto penetrable BBL bleu 1999 metal PVC

Text and images / Chen Chi-Hsiang

One, these artworks are actually static, but when people look at them, they appear to move and change. (In the general concept of this work, it is a painting or three-dimensional piece that possesses vitality due to visual effects; essentially, it exists as an illusion in the viewer's eyes or mind, not merely on the wall—it only becomes self-complete when observed. This is also the condition for Duchamp’s readymades to become art, or the concept that if you view a painting, you too are an artist.) These works can be two-dimensional, such as paintings by Vasarely or Riley. They may also be three-dimensional spaces, such as those by Soto. For example, various flat paintings considered by Vasarely, works composed of several separated planes, screen-like works, and three-dimensional objects. The kinetic effect of static works relies on their interaction with light and familiar visual phenomena, such as when the human eye encounters strong bright contrasts between black and white, or juxtapositions of different hues, producing afterimage tendencies.

Two, the movement of these works is arbitrary (subject to wind), without mechanical effects, such as works by Calder or Schoffer.

Three, these works possess simple mechanical effects powered by motors, electromagnetism, hydraulics, or light: for instance, Tinguely or Burry using motors, Takis using electromagnetism, or Macz using hydraulic principles.

All images are from the grand Op Art exhibition at the Grand Palais in Paris, spanning 1913–2013, titled "Dynamo."