admin 21 Dec 2017 0 Comments Marconi -invented spark transmitter-first radio factory in 1898-created spark transmitter for navy point-to-point transmission 1912 – titanic distress signal heard by marconey. All ships to require wireless after this Valdemar Poulsen 1. Using Smith’s theories, he builtthe 1st magnetic recorder Hire a custom writer who has experience. It's time for you to submit amazing papers! order now 2. Used “electromagnetic inductance“to record audio onto a coil of wire 3. 1898- Developed & manufactured wirerecorder – Telegraphone Hertz -First to detect radio waves in 1887. -caused a spark to leap across a gap that generated electromagnetic waves Hertz -First to detect radio waves in 1887. -caused a spark to leap across a gap that generated electromagnetic waves Oberlin Smith 1888 – First topublish his ideasabout recordingaudio using magneticenergy Related posts: MSV2 MSV2 MSV2 MSV2 MSV2 MSV2 MSV2 Music Comp. Final WHRW Rules and Regulations