Commemorative stamp series - Germany / German Democratic Republic 1981 - 10 Pfennig

Important Personalities, Edition 1981 The Ministry of Posts and Telecommunications of the German Democratic Republic publishes six special postage stamps with illustrations of important personalities. No special first day cover envelope Special cancellation from May 5 to July 4, 1981 Important personalities 10 Pfennig value: Heinrich Barkhausen (2 December 1881 to 20 February 1956) His place of work was the Technical University - now Technical University - Dresden, where he 1910 Privatdozent became and from 1911 to 1953 o. Professor for electrical engineering was. Barkhausen is considered the founder of low-voltage technology. He was the director of the Institute for Low Voltage Technology under his leadership for 40 years. He gained world fame. Barkhausen's work combined in-depth basic research with application-oriented research. His name is directly linked to two of his discoveries: the "Barkhausen effect", which was used to detect the presence of the Weiss districts, and the Barkhausen short vibrations. These were a method of vibration generation, which produced the then highest achievable vibrations. His four-volume work on electron tubes is world famous and has been translated into all major languages. Barkhausen, which the current Academy of Sciences of the GDR in 1949 elected a full member, received in 1949 the National Prize I. class.