What is Bell’s ‘harmonic telegraph’? [Giải giúp mk vs ạ]
By Eloise
What is Bell’s ‘harmonic telegraph’?
[Giải giúp mk vs ạ]
0 bình luận về “What is Bell’s ‘harmonic telegraph’? [Giải giúp mk vs ạ]”
When Bell began experimenting with electrical signals, the telegraph had been an established means of communication for some 30 years. … His “harmonic telegraph” was based on the principle that several notes could be sent simultaneously along the same wire if the notes or signals differed in pitch.
When Bell began experimenting with electrical signals, the telegraph had been an established means of communication for some 30 years. … His “harmonic telegraph” was based on the principle that several notes could be sent simultaneously along the same wire if the notes or signals differed in pitch.