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Siemens electric telegraph relay.

Siemens electric telegraph relay, 1906. Ernst Werner Siemens (von Siemens from 1888; German: 13 December 1816 - 6 December 1892) was a German inventor and industrialist. Siemens name has been adopted as the SI unit of electrical conductance; the Siemens. He was also the founder of the electrical and telecommunications company Siemens.
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Título:
Siemens electric telegraph relay.
Siemens electric telegraph relay, 1906. Ernst Werner Siemens (von Siemens from 1888; German: 13 December 1816 - 6 December 1892) was a German inventor and industrialist. Siemens name has been adopted as the SI unit of electrical conductance; the Siemens. He was also the founder of the electrical and telecommunications company Siemens.
Crédito:
Album / Universal Images Group / Universal History Archive
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Modelo: No - Propiedad: No
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Tamaño imagen:
7776 x 8091 px | 180.0 MB
Tamaño impresión:
65.8 x 68.5 cm | 25.9 x 27.0 in (300 dpi)
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