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NEWSPAPER
a printed publication (usually issued daily or weekly) consisting of folded unstapled sheets and containing news, feature articles, advertisements, and correspondence. -
TELEPHONE
a system for transmitting voices over a distance using wire or radio, by converting acoustic vibrations to electrical signals. -
MOTION PICTURE
Film, also called motion picture or movie, series of still photographs on film, projected in rapid succession onto a screen by means of light. Because of the optical phenomenon known as persistence of vision, this gives the illusion of actual, smooth, and continuous movement. -
RADIO
The first edition of radio was patented in 1896 by Guglielmo Marconi. Marconi was a pioneer of wireless telegraphy. Born in Italy in 1874, he began experimenting with his inventions at the age of 20 after becoming aware of the work of Hertz in electromagnetic waves, also known as radio waves. -
TELEVISION
a system for transmitting visual images and sound that are reproduced on screens, chiefly used to broadcast programs for entertainment, information, and education. -
CABLE TELEVISION
a system in which television programs are transmitted to the sets of subscribers by cable rather than by a broadcast signal. -
INTERNET
The Internet is a vast network that connects computers all over the world. Through the Internet, people can share information and communicate from anywhere with an Internet connection.