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an electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound -
a print periodical containing miscellaneous pieces (such as articles, stories, poems) and often illustrated a fashion magazine a gardening magazine also : such a periodical published online. b : a similar section of a newspaper usually appearing on Sunday. -
Radio is the technology of signaling and communicating using radio waves.[1][2][3] Radio waves are electromagnetic waves of frequency between 30 hertz (Hz) and 300 gigahertz (GHz). -
A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. -
Twitter, Inc. is an American communications company based in San Francisco, California. The company operates the microblogging and social networking service Twitter. It previously operated the Vine short video app and Periscope livestreaming service.