Communication: From Hieroglyphs to HyperlinksKingfisher, 15.11.2007 - 64 Seiten Delve into the many technologies that we use to share information. From making calls on satellite phones to sending e-mails, this is an exciting look at the developments that have revolutionized communication. |
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Seite 27
... wires linked the east and west coasts of the United States for the first time . The wires crackled not with speech but with long and short pulses of electrical power . This code of dots and dashes was named after Samuel Morse , the ...
... wires linked the east and west coasts of the United States for the first time . The wires crackled not with speech but with long and short pulses of electrical power . This code of dots and dashes was named after Samuel Morse , the ...
Seite 31
... wires and the dot - and - dash electrical pulses that flowed through them . Speech began to travel through the same wires with the invention of the telephone around 1870. All calls were connected by operators until an automatic exchange ...
... wires and the dot - and - dash electrical pulses that flowed through them . Speech began to travel through the same wires with the invention of the telephone around 1870. All calls were connected by operators until an automatic exchange ...
Seite 44
... wires ( see page 26 ) and began experimenting at home in 1894 . Using very simple equipment , he managed to send a radio signal across a room and then to the end of his yard . Next his brother carried a homemade radio receiver out of ...
... wires ( see page 26 ) and began experimenting at home in 1894 . Using very simple equipment , he managed to send a radio signal across a room and then to the end of his yard . Next his brother carried a homemade radio receiver out of ...
Häufige Begriffe und Wortgruppen
advertisements Alamy Alfred Vail Alois Senefelder alphabet animals ARPANET Art Archive beacons broadcast cable camcorders camera cave cell phones cellular cipher clever color communication technologies compact disc computer network copied Corbis created cursus publicus Daguerre disc Earth easy Edison electronic entertainment expressions film flags gestures Getty Greek Guglielmo Marconi Gutenberg hieroglyphics humans idea images Internet invention inventor Johannes Gutenberg kinetoscope learned to speak letters linked machine magazines Mechanical televisions MEPL messenger services missiles Morse code movie MP3s newspapers orbit paintings paper photographs picture writing postal services printers printing quickly radar radio waves replaced Roman Roman alphabet runners Samuel Morse Satellite telephones scientists screen scribes send messages services began ships shows spread stations stories Sumerians talk telegraph telephone calls television sets Thomas Edison Tim Berners-Lee tiny today's viewers visual signals watch wires words