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Production of the optical device from 19C.
This attempt was also to make art from the 2nd dimension to the 3rd dimension, then develop it into the 4th dimension. Because my interest was to create art from more than material and space matters. When it comes to the 4th dimension, it contains more abstract concepts of the notion of time. Although this idea also comes from science, being an artist I used the more poetical word of "Eternity". This does not mean immortality. This means the moment which is not just past nor future. For me, it was the moment that contains something cosmic.
When the moon rotates, the extra-terrestrial does yo-yo.