383K views · 1.8K reactions | Join the #RoundTableChina crew on a wild ride through the history of communication tools! From ancient smoke signals to today's smartphones, see how technology defines the way we communicate. Tune in for some fun and sparks of wisdom! | Learn Chinese | Facebook

462K views · 508 reactions | In the 1930s, wirephoto technology transmitted photographs over long distances. Photographs were scanned by a drum scanner, converting light intensity into electrical signals. These signals were sent over telephone lines using modulation techniques. At the receiving end, signals were decoded and reproduced into visual images. Wirephoto facilitated rapid dissemination of visual information in journalism and communication | History In Pictures | Facebook