Siemens, Ernst Werner

Ernst Werner Siemens was born on December 13, in 1816. He was a German electrical engineer, inventor and industrialist. Siemens's name has been adopted as the SI unit of electrical conductance, the siemens. He founded the electrical and telecommunications conglomerate Siemens and invented the electric tram, trolley bus, electric locomotive and electric elevator.

Ernst Werner Siemens was born in Lenthe, today part of Gehrden, near Hannover, in the Kingdom of Hanover in the German Confederation.

After finishing school, Siemens intended to study at the Bauakademie Berlin.

Ernst Werner Siemens chose to join the Prussian Military Academy's School of Artillery and Engineering, between the years 1835–1838 where he received his officers training.

In 1843 he sold the rights to his first invention to Elkington of Birmingham. Siemens invented a telegraph that used a needle to point to the right letter, instead of using Morse code. Based on this invention, he founded the company Telegraphen-Bauanstalt von Siemens & Halske on 1 October 1847, with the company opening a workshop on 12 October. The company was internationalized soon after its founding.

Ernst Werner Siemens built the world's first electric passenger train in 1879 and the first electric elevator in 1880. His company produced the tubes with which Wilhelm Conrad Röntgen investigated x-rays. He claimed invention of the dynamo although others invented it earlier. On 14 December 1877 he received German patent for an electromechanical "dynamic" or moving-coil transducer, which was adapted by A. L. Thuras and E. C. Wente for the Bell System in the late 1920s for use as a loudspeaker.

In May 1881, Siemens & Halske inaugurated the world's first electric tram service, in the Berlin suburb of GroЯ-Lichterfelde. Siemens is also the father of the trolleybus, which he initially tried and tested on 29 April 1882, using his "Elektromote".

Following his industrial career, he was ennobled in 1888, becoming Werner von Siemens.

Ernst Werner Siemens retired from his company in 1890 and died in 1892 in Berlin.

Citing www.wikipedia.org