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Pptx on radio

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this is a pptx on radio …

this is a pptx on radio

Published in: Education, News & Politics
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Transcript

  • 1. BY MAEGHA SUBRAMANIAM
  • 2. WHAT IS MASS MEDIA Mass media is media which is intended for a large audience. It may take the form of broadcast media, as in the case of television and radio, or print media, likenewspapers and magazines. Internet media can also attainmass media status, and many mass media outlets maintaina web presence to take advantage of the ready availability of Internet in many regions of the world
  • 3. TYPES OF MEDIUMS RADIO CINEMA OUTDOOR MEDIA MOBILE INTERNET TELEVISION NEWESPAPER
  • 4. WHAT IS RADIO Radio is the transmission of signals through free space by electromagnetic waves with frequencies significantly below visible light, in the radio frequency range, from about 3 kHz to 300 GHz.These waves are called radio waves. Electromagnetic radiation travels by means of oscillatingelectromagnetic fields that pass through the air and the vacuum of space.
  • 5. WHO INVENTED ITGuglielmo Marconi was the one to invent theradio he got the idea from Henrich Hertz andgot the idea of radio waves and decided it can be used to receive and send telegraphic messages that is how he transmitted radio waves all over the Atlantic ocean in 1995
  • 6. WHEN WAS IT INVENTEDRadio owes its development to two other inventions, the telegraph and the telephone, all three technologies are closely related. Radio technology began as "wireless telegraphy".Radio can refer to either the electronic appliance that we listen with or the content listened to. However, it all started with the discovery of "radio waves" -electromagnetic waves that have the capacity to transmitmusic, speech, pictures and other data invisibly through the air
  • 7. HOW WAS IT INVENTED In England, a young Italian experimenter named Guglielmo Marconi had been hard at work building a device for wireless telegraphy. The young Marconi hadtaken out the first wireless telegraphy patent in England in 1896. His device had only a two-circuit system, which some said could not transmit "across a pond." Later Marconi set up long-distance demonstrations, using a Tesla oscillator to transmit the signals across the English Channel.
  • 8. MY PERSPECTIVE ON RADIOMy perspective on radio isGood as well as badGOOD;The good points are;•Entertains•Keeps you updated•Gives current affairs•Talks about compititons
  • 9. CONTINUE……Bad; To much talking by radio jokeys•Plays very old songsOther wise radio has a positive impact on me
  • 10. T.Y

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