Werner von Siemens in the context of "Siemens (unit)"

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⭐ Core Definition: Werner von Siemens

Ernst Werner Siemens (von Siemens from 1888; /ˈsiːmənz/ SEEM-ənz; German: [ˈziːməns, -mɛns]; 13 December 1816 – 6 December 1892) 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.

His dynamo laid the foundation for the modern age of electricity and he was involved in the development of the electric car.

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👉 Werner von Siemens in the context of Siemens (unit)

The siemens (symbol: S) is the unit of electric conductance, electric susceptance, and electric admittance in the International System of Units (SI). Conductance, susceptance, and admittance are the reciprocals of resistance, reactance, and impedance respectively; hence one siemens is equal to the reciprocal of one ohm (Ω) and is also referred to as the mho. The siemens was adopted by the IEC in 1935, and the 14th General Conference on Weights and Measures approved the addition of the siemens as a derived unit in 1971.

The unit is named after Ernst Werner von Siemens. In English, the same word siemens is used both for the singular and plural. Like other SI units named after people, the name of the unit (siemens) is not capitalized. Its symbol (S), however, is capitalized to distinguish it from the second, whose symbol (s) is lower case.

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Werner von Siemens in the context of Siemens

Siemens AG (German pronunciation: [ˈziːməns] or [-mɛns]) is a German multinational technology conglomerate. It is focused on industrial automation, building automation, rail transport and health technology. Siemens is the largest engineering company in Europe, and holds the position of global market leader in industrial automation and industrial software.

The origins of the conglomerate can be traced back to 1847 to the Telegraphen Bau-Anstalt von Siemens & Halske established in Berlin by Werner von Siemens and Johann Georg Halske. In 1966, the present-day corporation emerged from the merger of three companies: Siemens & Halske, Siemens-Schuckert, and Siemens-Reiniger-Werke. Today headquartered in Munich and Berlin, Siemens and its subsidiaries employ approximately 320,000 people worldwide and reported a global revenue of around €78 billion in 2023. The company is a component of the DAX and Euro Stoxx 50 stock market indices. As of December 2023, Siemens is the second largest German company by market capitalization.

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Werner von Siemens in the context of Siemens & Halske

Siemens & Halske AG (or Siemens-Halske) was a German electrical engineering company that later became part of Siemens.

It was founded on 12 October 1847 as Telegraphen-Bauanstalt von Siemens & Halske by Werner von Siemens and Johann Georg Halske. The company, located in Berlin-Kreuzberg, specialised in manufacturing electrical telegraphs according to Charles Wheatstone's patent of 1837. In 1848, the company constructed one of the first European telegraph lines from Berlin to Frankfurt am Main. Siemens & Halske was not alone in the realm of electrical engineering. In 1887, Emil Rathenau had established Allgemeine Elektrizitäts-Gesellschaft (AEG), which became a long-time rival.

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LINKED FROM (PARENTS)
← Siemens ← Siemens (unit) ← Siemens & Halske ← Siemens AG
LINKS TO (CHILDREN)
Von → Inventor → Industrialist → SI → Siemens (unit) → Siemens → Gross-Lichterfelde Tramway → Electromote → Siemens locomotive of 1879 → Elevator → Dynamo → Electricity → Electric car →