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Photograph "Opening of the picture telegraph between Berlin and Vienna"

Deutsche Reichspost (1918 - 1945)01.12.1927

Museum for Communication Berlin, Museum Foundation Post and Telecommunication

Museum for Communication Berlin, Museum Foundation Post and Telecommunication
Berlin, Germany

August Karolus began working on a special photocell in 1923. The "Kerr-Karolus cell" reacted without inertia to changing brightness values, resulting in shorter transmission times and higher image quality on the receiving end. It was also no longer necessary to transfer the image to a slide: the reflection of direct light was enough to send the image. Developed jointly with the Reichspost, the "Siemens-Karolus-Telefunken system" was the foundation of modern image telegraphy in 1927.

Details

  • Title: Photograph "Opening of the picture telegraph between Berlin and Vienna"
  • Creator: Deutsche Reichspost (1918 - 1945)
  • Date Created: 01.12.1927
  • Location Created: Berlin, Deutschland
  • Rights: © Museumsstiftung Post und Telekommunikation
  • Material: Papier

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