Sonnenuhr

Sundial on the Danube promenadeSince summer 1993, a unique timepiece, designed and built by physics and astronomy student Werner Riegler from Grein, has adorned the Danube riverbank in the area of Esperantoplatz. This sundial is a so-called equatorial sundial, where the shadow of a wire rope stretched parallel to the Earth's axis falls onto a scale. From a semi-cylindrical dial, it is then possible to read the time with an accuracy of around two minutes. The framework of this clock consists of chrome-nickel steel, the dial and scales are made of brass. In addition to the time display, a granite sphere is attached to the front part. This globe with the engraved continents is illuminated by the sun in the same way as the Earth itself. One can therefore see from the shadow boundaries in which countries the sun is currently shining. The fascinating thing about such a clock is that its functionality is easy to understand, and thus connections between Earth and sun movement are easily learned.