Air raja: Perbedaan antara revisi

[[Antoine Lavoisier]] called aqua regia nitro-muriatic acid in 1789.<ref>Lavoisier, Antoine (1790). [https://archive.org/details/elementschemist00kerrgoog ''Elements of Chemistry, in a New Systematic Order, Containing All the Modern Discoveries'']. Edinburgh: William Creech. p. 116. ISBN 978-0486646244.</ref> When [[Operation Weserübung|Germany invaded Denmark]] in World War II, Hungarian chemist [[George de Hevesy]] dissolved the gold [[Nobel Prize]]s of German physicists [[Max von Laue]] (1914) and [[James Franck]] (1925) in aqua regia to prevent the Nazis from confiscating them. The German government had prohibited Germans from accepting or keeping any Nobel Prize after jailed peace activist [[Carl von Ossietzky]] had received the Nobel Peace Prize in 1935. De Hevesy placed the resulting solution on a shelf in his laboratory at the [[Niels Bohr Institute]]. It was subsequently ignored by the Nazis who thought the jar—one of perhaps hundreds on the shelving—contained common chemicals. After the war, de Hevesy returned to find the solution undisturbed and precipitated the gold out of the acid. The gold was returned to the Royal Swedish Academy of Sciences and the Nobel Foundation. They re-cast the medals and again presented them to Laue and Franck.<ref>[https://archive.org/stream/adventuresinradi01heve#page/27/mode/1up/search/medals "Adventures in radioisotope research"], George Hevesy</ref><ref>{{Cite web| publisher = The Nobel Foundation | url = http://nobelprize.org/nobel_prizes/about/medals/ | author = Birgitta Lemmel | title = The Nobel Prize Medals and the Medal for the Prize in Economics | year = 2006}}</ref>

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