Dr. Harold Leinbach built the first prototype riometer – or as he calls it a cosmic noise receiver - in 1955 while he was a graduate student at the University of Alaska, Geophysical Institute working under Dr. Gordon Little. Hence he became the Principal Scientist for the Riometer Project of the IGY Cosmic Noise Project. There were 13 riometers in the project seven operated by the Geophysical Institute, one in Kiruna by the Swedes, three by Stanford and two by Dartmouth.


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