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File:IEEE MILESTONE Demonstration of a Radar Predecessor, 1904.jpg

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Summary

Description IEEE MILESTONE
Demonstration of a Radar Predecessor, 1904
On 17 May 1904, near this site, Christian Hülsmeyer demonstrated his Telemobiloskop: a spark gap transmitter, simple parabolic antennas, detector, and an indicator. It was designed to ring a bell when a barge passed the system at a range of several hundred meters. He patented this device in Germany, the United Kingdom, and the U.S.A. This was the world's first operable device to detect radio reflections, a predecessor of radar.
Octobre 2019
IEEE (Institute of Electrical and Electronics Engineers)
Date
Source Own work
Author Andreas Schwarzkopf
Other versions
deutschsprachige Tafel
Camera location50° 56′ 25.82″ N, 6° 57′ 46.01″ E Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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IEEE Milestone Cologne

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50°56'25.822"N, 6°57'46.012"E

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Date/TimeThumbnailDimensionsUserComment
current15:45, 20 September 2021Thumbnail for version as of 15:45, 20 September 20213,720 × 2,556 (3.54 MB)Andreas SchwarzkopfVicuñaUploader 1.23

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