Siemens has the following uses:

Physics and engineering

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• Siemens (unit), an SI derived unit of electrical conductance
• Siemens star, a device to test the resolution of optical instruments, printers and displays.

Family name

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Siemens is a German family name carried by generations of telecommunications industrialists, including:

• Ernst Werner von Siemens (known as Werner) (1816-1892)
• Carl Wilhelm Siemens (known as Wilhelm or Sir William Siemens) (1823-1883), brother of Werner von Siemens
• Carl Heinrich von Siemens (1829-1906), brother of Werner von Siemens
• Arnold von Siemens (1853-1918), son of Werner von Siemens
• Georg Wilhelm von Siemens (known as Welhelm) (1855-1919), son of Werner von Siemens
• Carl Friedrich von Siemens (1872-1941), son of Werner von Siemens
• Hermann von Siemens (1885-1986), nephew of Werner von Siemens
• Ernst von Siemens (1903-1990), nephew of Werner von Siemens
• Peter von Siemens (1911-1986), nephew of Werner von Siemens

Company

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• Siemens AG, a German electrical and telecommunications company, including the former branches:
  • Siemens & Halske AG
  • Siemens-Schuckertwerke

See also List of assets owned by Siemens.

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