Translations:Siemens/7/en

1950's advertisement for the Siemens spin-dryer. (Source: Siemens Corporate Archives)

In addition to communications technology, Werner Siemens succeeded in laying the cornerstone for electrical engineering with the discovery of the dynamo-electric principle in 1866. This dynamo for the first time allowed mechanical energy to be converted cost-effectively into electricity. The machine was the trigger for a series of other groundbreaking Siemens technologies, including the first electrical railway, the first electrical street lighting and the first electrical elevator.