A pioneer in the creation of computer-generated drawings, Joan Truckenbrod (1945, Greensboro, North Carolina) learned to use the programming language FORTRAN before producing a series of drawings generated from a geometric motif. These drawings include Untitled (1975), shown in one vitrine here. In her work, digital technologies are understood as spaces of mediation between the physical and the virtual. The artist compares the variables from which she creates her works to ‘pebbles on the beach: each time the tide comes in, you get a new configuration of pebbles. Then the water disappears and the whole arrangement is transformed.’ From the end of the 1970s, Truckenbrod created textile works using scientific algebraic formulas developed to describe natural phenomena such as wind currents, light reflection and so on. Energy Surface(1981) evokes the contours of a valley. To make this work, the artist photographed the coded algorithmicimage from her computer screen and printed it on a textile. Using the computer, Truckenbrod translates natural phenomena that are invisible and ephemeral to our senses, into an image of a landscape and renders it tactile through the textile.