Pptx on radio
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Mass media is media intended for a large audience through various mediums such as radio, television, newspapers, magazines, cinema, and the internet. Radio was invented in the late 19th century by Marconi, who transmitted radio waves across the Atlantic ocean in 1895. Radio works by transmitting electromagnetic signals through the air at frequencies below visible light. It was developed based on earlier inventions like the telegraph and telephone and started as wireless telegraphy before becoming a medium for transmitting music, speech and other content.
Pptx on radio
- 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, like newspapers and magazines. Internet media can also attain mass media status, and many mass media outlets maintain a 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 oscillating electromagnetic fields that pass through the air and the vacuum of space.
- 5. WHO INVENTED IT Guglielmo Marconi was the one to invent the radio he got the idea from Henrich Hertz and got 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 INVENTED Radio 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 transmit music, 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 had taken 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 RADIO My perspective on radio is Good as well as bad GOOD; 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 songs Other wise radio has a positive impact on me
- 11. T.Y