• (n.) An instrument for recording and reproducing sound by local magnetization of a steel wire, disk, or ribbon, moved against the pole of a magnet connected electrically with a telephone receiver, or the like.
Found on
http://thinkexist.com/dictionary/meaning/telegraphone/
(from the article `magnetic recording`) ...magnetization of portions of a magnetic material. The principle of magnetic recording was first demonstrated by the Danish engineer Valdemar ... After his education Poulsen joined the Copenhagen Telephone Company as an assistant in the technical section. While working there, he invented the ......
Found on
http://www.britannica.com/eb/a-z/t/21
Te·leg'ra·phone noun [ Greek
th^le far +
-graph + ... sound.] An instrument for recording and reproducing sound by local magnetization of a steel wire, disk, or ribbon, moved against the pole of a magnet connected electrically with a telephone receiver, or the like.
Found on
http://www.encyclo.co.uk/webster/T/20
No exact match found.
