Practice concerning with locality and non-locality of stripes
Some state which is a periodic pattern - i.e. repeat of similar shapes and so on, is called stripes. One question arises. Each stripe is independent from the other? Or a stripe is derived from the different of tint/density of an object?
At least when we find stripes, then we try to identify each stripe. This indicates our consciousness is working on separation of thing/stripe and the background/stripes, in order to obtain a viewpoint.
The famous periodic phenomenon in nature is a wave/vibration phenomenon. Also light has a nature as wave too. Rainbow is familiar stripes derived from the wave nature of light. It appears when sunlight diffracts by raindrops/molecular. And, the seven colors of rainbow emerge from the difference from diffraction of frequencies. Thus we see the stripe of rainbow as a difference of vague tint.
On the other hand, when a laser light which has a specific frequency diffracts, the light becomes several light-rays. The rays are due to the extreme tint as stripes. We no longer see them as tint, these are certain independent rays. And when the rays pass diffraction grating which is rotating, the light dots have special motions. That is quite different from the motions of gradation of rainbow made by halogen lamp. Rainbow as tint and ray as independence, as two kind of stripes derived from lights, this installation might be showing us two kind of ways of 'presence' by lights.
minoru sato