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      Heinrich Barkhausen
          
          *1881 in Bremen
              +1956 in Dresden
          
           
           
        
      
      
  German physicist
He discovered a magnetic effect providing evidence for the magnetic domain theory of ferromagnetism.
With K. Kurz he invented the the first vacuum tube electronic oscillator
      
      
      
        
        2017 J. Giesen 
        zuletzt geändert: 11. Jan. 2017