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50.8 MB (2.2 MB compressed)
5458 x 3254 pixels
46.2 x 27.4 cm ⏐ 18.2 x 10.8 in (300dpi)
ROYAL INSTITUTION OF GREAT BRITAIN / SCIENCE PHOTO LIBRARY ROYAL INSTITUTION OF GREAT BRITAIN / SCIENCE PHOTO LIBRARY
Hofmann's chemical models. Artwork showing how early chemical models were used to demonstrate the formation of molecules, in this case methane (marsh-gas, CH4) and ethane (hydride of ethyl, C2H6). This demonstration was performed by the German chemist August Wilhelm von Hofmann (1818-1892) when he gave a lecture to the Royal Institution in London, England, on 7 April 1865. The title was 'On the Combining Power of Atoms', and these artworks were later published in the journal 'Proceedings of the Royal Institution' (volume 4, 1866, pp.401-430).
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