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WEATHER GLASS |
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In 1832, after the death of Johann Wolfgang von Goethe, a pear shaped piece of glass was found in his bedroom on the Frauenplan in Weimar, Germany. The glass was flat on one side and convex on the other. Upon examination of Goethe's unpublished scientific papers it was discovered that this was a weatherglass which, when about half full of water, reliably indicates all changes in air pressure. In 1792/93 Johann Wolfgang von Goethe went to IImenau/Thuringen. The development of the Goethe barometer is attributed to him in co-operation with the local glass industry. This Goethe Weatherglass, which was also used by sailors, among others, was replaced by the mercury barometer and has sunk into oblivion. An original still hangs in the Gothe Museum in Weimar. It is called the "Goethe Weatherglass". |
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