Hülsmeyer IEEE Historic Milestone Plaque unveiled
On May 17, 1904, a public experiment was conducted on Cologne’s Hohenzollern Bridge which would go down in history as a milestone of international engineering art. On this day, the inventor Christian Hülsmeyer was the first to succeed in detecting ships travelling on the Rhine River based on the reflections of high frequency electromagnetic waves: It was the birth of radar. On October 19, 2019, a ceremony with Cologne's Lord Mayor Henriette Reker has been held to unveil a plaque commemorating this important milestone of technological history.
Watch the unveiling