André Marie Ampère. Stipple engraving by A. Tardieu after himself, 1825. https://www.rawpixel.com/image/14008730/andre-marie-ampere-stipple-engraving-tardieu-after-himself-1825Free Image from public domain licenseAndré Marie Ampère. Etching by L. Deymarie after himself, 1846. https://www.rawpixel.com/image/14010574/andre-marie-ampere-etching-deymarie-after-himself-1846Free Image from public domain licenseAndré Marie Ampère. Reproduction of lithograph by J. Boilly. https://www.rawpixel.com/image/14010918/andre-marie-ampere-reproduction-lithograph-boillyFree Image from public domain licenseTable with devices that demonstrate electrodynamic laws devised by Ampère; in the Collège de France, Paris. Photoprint. https://www.rawpixel.com/image/14016360/image-technology-public-domain-tableFree Image from public domain license