In the installation 'Codex' (Figs 1 and 2) I placed four black points at random upon a wood plate on the floor in order to form a constellation. Ninety centimetres above this, a 10 mm thick glass plate with an area equal to that of the floor plate hung suspended by wires at the four corners from a square of steel tubing. This tubing was 90 x 90 cm and hung suspended from the ceiling. From the steel tubing, two incandescent bulbs hung above the glass plate. I connected the bulbs, a 500 W white light and a 200 W white light, to an on/off switch-controller programmed to switch on and off in order to spell the word tid (time) in Morse code alphabet. The word time was spelled simultaneously by each bulb, the rate of switching on and off for the 500 W bulb being half as fast as that for the 200 W bulb. The word in four different languages appeared in black adhesive lettering on the suspended glass plate. The central area of the glass plate contained the two words blind code in Braille writing. In this installation, my intention was to reflect the fact that light energy is a necessary condition for all organic life on Earth and that human visual perception is almost totally dependent on the 'white' light of the sun, i.e. the visible spectrum. When the bulbs of the piece emitted light, I intended to communicate the concept and the feeling of time as an inseparable aspect of any process. The bulbs' spelling of the word time referred to the physical and the visual prerequisite of the same concept in a context of visual art. When the bulb(s) was (were) on, the four spellings of the word and the Braille-writing blind code were projected onto the wooden plate lying beneath the suspended plate. Concerning the word meaning I used the concept of the linguist Louis Hjelmslev who postulates that is something projected onto the generative substance of language [3]. In this installation, the word itself, in four different languages plus the Braille writing, were projected onto the randomly positioned constellation on the white plate. I relied on an article by David Bohm for an understanding and descriptions of physical processes and a deeper relation between art and science [4]. With the installation 'Codex', I thus hoped by means of visual art to make a common point of understanding of both physical processes and processes of understanding.