According to artist Julio LeParc, a member of GRAV in Paris, our "first experiments with light were conducted in 1959: We place the light in small boxes which reproduced, multiplied and combined with the screens made of Plexiglas slates, prisms, squares and circle shapes, using a scale of 14 colours. Like in other experiments it is not about creating luminous paintings. The light is but a way to manifest some of my concerns, such apprehending the variation of the potential induced and to manifest it in one visual field. Many experiments were made from the handling of material and the differentiation of the issues. 

"I am witnessing a sensation of dislocation from my immediate environment by its alternative representation in the data of position, the figures of longitude and latitude updated every second as I move. What place is there for my sensations, my phenomenology, my conscious and unconscious awareness of space if this knowledge is so efficiently and functionally made redundant by the technologies of satellite navigations?"  - Yolande Harris