Throughout a meeting of Electrotecnicians in 1920, he presented the Termenvoksa or Heterophone, or Theremin, as it was called internationally. People at the meeting noticed a little box with two antennae, 1 on the proper and just one around the remaining. Could or not it's a fresh variety of telegraph? https://josueukqxy.blogdomago.com/37073185/new-step-by-step-map-for-mezz-barriers