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Anonymous users2024-02-06What is a communication student?
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Anonymous users2024-02-05More than 100 years have passed, and the history of human communication is still evolving. Starting with two cans and a rope, human beings have been exploring how to use tools for remote communication, telegraph, dial-up, keys, mobile phones, text messages, voip, freeeim. Communication increases the distance between people and maximizes the goal of a "global village".
The newsletter is mainly narrated and descriptive, and uses argumentative, lyrical and other expressions to report in a timely manner the influential characters, events, work experience and local features in real life, so as to educate and enlighten readers. To put it simply, a newsletter is a genre that concretely and vividly reports on newsworthy people, events, and situations.
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Anonymous users2024-02-04After the middle of the century, with the issuance of telegraphs and the discovery of electromagnetic waves, there has been a fundamental and great change in the field of human communication, and the use of metal wires to transmit information has been realized, and even wireless communication has been carried out through electromagnetic waves, making the mythical "Shunfeng Ear" and "Clairvoyant" become a reality.
Since then, human information transmission can be separated from the conventional audio-visual mode, and the electric signal can be used as a new carrier, which has brought a series of iron technology innovations and started a new era of human communication.
year, American Samuel. Samuel Morse succeeded in developing the world's first electromagnetic-type telegraph.
Using the code he designed, he could convert information into a series of long or short electrical pulses that were transmitted to the destination, and then converted into the original information.
On May 24, 1844, Morles conducted the first telegram in human history "in Morse code" in the Capitol chamber, enabling long-distance telegraph communication.
In the year, the British physicist Maxwell (established a set of electromagnetic theories, predicted the existence of electromagnetic waves, and explained that electromagnetic waves have the same properties as light, and both travel at the speed of light.
year, Scottish youth Alexander. Bell invented the world's first ** machine.
And in 1876 he applied for a patent for invention.
In 1878, the first long-distance experiment between Boston and New York, 300 kilometers apart, was carried out and succeeded, and the famous Bell Company was founded.
year, the young German physicist Heinris. Hertz (who conducted a series of experiments with radio rings and discovered the existence of electromagnetic waves, he used experiments to prove Maxwell's electromagnetic theory.
This experiment caused a sensation in the entire scientific community and became an important milestone in the history of modern science and technology, leading to the birth of radio and the development of electronic technology.
1. Explanation Yuanqu, also known as sandwich, is a literary and artistic form of Qingxidong that prevailed in the Yuan Dynasty, including miscellaneous operas and loose songs, sometimes referring specifically to miscellaneous operas; >>>More
I don't know, I'm just passing through.
This poem exposes the shameful behavior of the rulers of the Southern Song Dynasty who only cared about the mountains and rivers, drunk and dreamed of death, forgot the shame of the broken mountains and rivers, and completely put the recovery of the lost lands in the north in the back of their minds.
To sum up, the social background at that time was a relatively turbulent background. >>>More
The Beiyang Naval Division, or Beiyang Jiandui, was a new type of naval team founded by the Qing Dynasty during the Westernization Movement.