04:189:102 Lecture Notes - Lecture 7: Reginald Fessenden, Hd Radio, Voltas

• School: Rutgers University
• Department: Communication and Informatio
• Course: 04:189:102
• Professor: Fredrika Thelandersson

Document Summary

The history of the invention of radio is a history of: The invention of radio cannot be solely credited to us inventors. Morse code: a system of dots and dashes assigned to english alphabets and numbers that represent specific things and were sent through electrical signals. Have to be skilled to decode the messages. The electric telegraph would not have been possible without italian physicist. Alessandro volta"s invention of the battery in 1800. James maxwell"s theory about the electromagnetic field. Achieved amplified sound using the audion tube. First to transmit the human voice (1906) 1912 - the titanic foregrounds the importance of wireless telegraphy & (cid:324)introduces(cid:325) another important personality . The us wants to be in charge of this medium. American marconi sold both transmitters and receivers. Radio corporation of america (rca) is established as a private sector monopoly. R8a controls ge, westinghouse, at&t, american arconi and the navy"s radio patents.