Terpodion

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You can help expand this article with text translated from the corresponding article in German. (December 2020) Click [show] for important translation instructions. View a machine-translated version of the German article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 1,957 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing German Wikipedia article at [[:de:Terpodion]]; see its history for attribution. You may also add the template {{Translated|de|Terpodion}} to the talk page. For more guidance, see Wikipedia:Translation.

The terpodion or uranion is a keyboard instrument which produces sound using the same friction principle as the glass armonica.

Instead of rotating glass bells a wooden cylinder is rotating. This cylinder is coated with a special mixture. Only 25 instruments were ever built by Christian Friedrich Ludwig Buschmann, the son of Johann David Buschmann, the inventor of this instrument. Johann David Buschmann was first a passementier, then he started repairing key instruments. By 1817 the instrument spanned a range of 5 1/2 octaves.

• In 1821, one such instrument arrived in London.^[1]
• Also in 1821, David Buschmann sold a licence for building terpodions to the instrument builder David Loescham and the cheesemonger James Allwright.^[2][3][4] Following this, only one instrument was ever built in England.
• In 1841, another report could be read in the London newspaper.^[5]

Examples of these instruments can be seen in museums all over Europe, including museums in Copenhagen, Leipzig, Vienna, London, Brussels, Stockholm, Jevišovice and Frankfurt/Oder.