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Carl Scheele

History

The story of the “Green Scheele” pigment by swedish chemist Carl Scheele

by Roberto Poeti 29 May 2022
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Carl Scheele’s pigments

The intense experimental activity of Carl Scheele (1742-1786) embraced the fields of organic and inorganic chemistry, obtaining incredible results in his short life (he died at the age of forty), having the back rooms of the pharmacies where he worked. There are Scheele’s discoveries that have had a great impact, such as the discovery of oxygen on the development of chemistry, his research on phosphorus in the Swedish match industry, or his investigations on the photochemistry of silver salts on the development of photography etc. But there is an experimental result by Scheele, not among the most important in terms of scientific relevance, which however had the most impact on art, fashion and costume in general. It is the invention of the green dye which then took the name green of Scheele, the link between the pigments and Scheele was the unexpected result of research that had a different purpose. 

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29 May 2022 0 commento
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History

Carl Scheele : the discoverer of oxygen

by Roberto Poeti 1 November 2017
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Carl Wilhelm Scheele

I rediscovered the great scientist Carl Scheele, a contemporary of Lavoisier, during a trip that I made in Sweden, and in particular in Stockholm. It is first necessary to say a few words about the village of Skansen. Stockholm is a beautiful city built on many islands, one of which, known as Kungliga Djurgarden (Royal Garden), the early nineteenth there were only hills and plants .

The initiative of Artur Hazelius

During the first decade of the nineteenth century a wealthy merchant John Burgman built to Kungliga Djurgarden a belvedere with a magnificent garden. The properties of this Tycoon was called Skansen, as it was near a small fort (skans = small Fortress). The property included more than four acres of land ; in 1891 they passed into the hands of Artur Hazelius. It is due to  this extraordinary personage the birth in 1891 the first open-air museum in the world. For nearly twenty years had turned the length and breadth of the Swedish countryside collecting folk costumes, furnishings, furniture and equipment of the old peasant culture and the various trades .

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1 November 2017 0 commento
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PROF. ROBERTO POETI

Hi, my name is Roberto Poeti , a former teacher . I decided to create this blog to continue the dialogue on Chemical Scienze, its history and its teaching and to share the experiences of my trips I’ve done now and in the distant past.
“Even Chemistry is a beautiful journey into the knowledge of the matter“

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  • Lavoisier’s first Memoir on Respiration – year 1777
  • The island of Bali in the images of half a century ago
  • The island of Bali half a century ago: the Barong dance
  • The story of the “Green Scheele” pigment by swedish chemist Carl Scheele
  • Laboratory experience: the analysis and synthesis of Prussian Blue dye

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