Henri de Ruolz,French industrial chemist
Numéro d’image : 11684076
| Henri de Ruolz (1808-1887),French industrial chemist and Comte de Ruolz-Montchal. De Ruolz discovered in 1841 the process for gilding and silver-plating metals using a voltaic pile,but his patent application was challenged by English industrialist George Elkington. The dispute was resolved and Ruolz continued his research,obtaining as many as seventeen patents relating to the plating of copper,brass,bronze and iron with nickel,and the electrodeposition of silver,platinum and other metals. De Ruolz was also a composer,producing three operas,cantatas and other works | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Terry, Sheila |
| Taille de l’image : | 3849 px × 4714 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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