Image: Sonnenschreiber

Description: The Sun Writer is a tool that is independent of the artist and visualizes the movement of the "central star" with the aid of the sun in its function as elemen- tary source of light and energy.
Title: Sonnenschreiber
Credit: Marc van den Broek, Solar Foc 180, Sonnenschreiber, 1986
Author: Marc van den Broek
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Usage Terms: Creative Commons Attribution-Share Alike 4.0
License: CC BY-SA 4.0
License Link: https://creativecommons.org/licenses/by-sa/4.0
Attribution Required?: Yes