Engines of Our Ingenuity 2949: Microphone

Episode: 2949 Who Invented the Microphone? Today, competing claims.

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#AlexanderBell #Berliner #DavidHughes #edison #Kelvin #microphone

Trovate il video sul pasticcio telefonico combinato da #FrancescoArtibani e #LorenzoPastrovicchio sul #Topolino #3511 qui al Caffè del Cappellaio Matto su #LoSpazioBianco

https://www.lospaziobianco.it/alcaffedelcappellaiomatto/topolino-3511-pasticcio-telefonico/

#AlexanderBell #AntonioMeucci #ElishaGrey