Communication: Discover Science Through Facts and Fun
From the first sign language to text messaging, humans have always looked for new ways to communicate with each other. Find out who invented some of our most important communication devices, and learn all about how they work. Then pick your favorite way to tell a friend all about it!
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air particles Alexander Graham Bell ARPAnet Atlantic Ocean beds of type blind Blocks of Type bounces Broadcasting bursts of electricity called a bed carved cathode ray tube cause a bleep Clay communication compression computers Copying documents dots and dashes electric pulses electron guns engraved form messages Graham Bell invent Guglielmo Marconi gun shoots Gutenberg Internet invent a machine invented a code kind of paper kind of radar letter long distances lot of sounds Louis Braille mean missile Morse Code moving images papyrus scrolls Printing Blocks printing press pulse wave radar set radio waves rarefaction Samuel Morse screen send sound series of dots short burst sign language someone Sonar Systems sound over long sound traveled sound vibrations sound waves store electricity tablets talk target telegraph telephone television in 1926 three chemicals tiny transmit traveled in waves wanted wave moves wire World Wide World Wide Web write yoor