Tape Recorder Valdemar Poulsen's wire drum model of his Telegraphone. 1920.

Size: 9151px × 6875px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: archival, archive, century19th, centurywire, drum, historical, history, model, poulsen, poulsens, recorder, recordervaldemar, ribbon192020th, tape, taperecorderrecordsteel, telegraphonemagnetic, valdemar, wire