Media, Information and Technoculture 2000F/G Lecture Notes - Lecture 8: Cursus Publicus, Electrical Telegraph, Semaphore Line

• School: Western University
• Department: Media, Information and Technoculture
• Course: Media, Information and Technoculture 2000F/G
• Professor: Atle Kjosen

Document Summary

Mit 2000 the history of communication : lecture 8. Carey: the electromagnetic telegraph split the identity between transpiration and communication. Sending message prior to the telegraph: with a messenger on horse back, carts, or ships. Speed of sending message limited to the speed of transportation. (cid:12254) (cid:12254) (cid:12254) Needed a messenger, wouldn"t be faster than their mode of transportation. Would take a lot of time, sped up drastically with the telegraph. Symbols move independently of geography and independently of and faster than transport (carey, 126) Signals/messages were encoded as electric signals that were sent across wires. Power of electromagnetism, can send a message over a fraction of a second (cid:12254) (cid:12254) Early examples of sending messages over long distances independently of a messenger (cid:12254) (cid:12254) (cid:12254) (cid:12254) (cid:12254) (cid:12254) Limited by weather, geography, noise and the capacity of human senses of hearing and seeing.