Ernst Werner von Siemens (known as Werner von Siemens) (December 13, 1816 - December 6, 1892) was a German inventor and industrialist. Siemens' name has been adopted as the SI unit of electrical conductance, the siemens. Wikipedia
The definitive Wikipedia entry for Ernst Werner von Siemens. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Ernst_Werner_von_Siemens