Keywords: William Edward Ayrton (1847-1908) Cropped.jpg en William Edward Ayrton 1847-1908 William Edward Ayrton 1847-1908 físico inglés de William Edward Ayrton 1847-1908 William_Edward_Ayrton_ 1847-1908 jpg 2010-03-17 16 59 UTC William_Edward_Ayrton_ 1847-1908 jpg W D Downey derivative work Karshan <span class signature-talk >talk</span> Cropped lossless Karshan William_Edward_Ayrton_ 1847-1908 jpg PD-old original upload log This image is a derivative work of the following images File William_Edward_Ayrton_ 1847-1908 jpg licensed with PD-old 2008-10-05T16 48 24Z APPER 300x448 69732 Bytes <nowiki> en William Edward Ayrton 1847-1908 de William Edward Ayrton 1847-1908 National Portrait Gallery London W D Downey published 1893 other_versio</nowiki> Uploaded with derivativeFX William Edward Ayrton |