Communicating or Communication with anybody in this world has become so easy and fast. Man’s knowledge has helped him to make great advancement in science and technology. In the last 50 years, there have been many changes in communication, transport etc. Means of communication have made our world very small.
We have learnt various methods of communication like postal services, telephones, mobiles, tablets, television, newspaper, fax, internet etc. In this chapter, we will learn more about some of the means of communication.
Sound Reaches Our Ears by Travelling Through air
We know that air acts as a medium for sound to travel. Guglielmo Marconi was the pioneer of radio communication. In 1901, he transmitted radio signals across the Atlantic ocean. Since then until about a decade ago, radio signals could be transmitted only at radio Alexander Graham Bell stations. The telephone which had been invented by Alexander Graham Bell in 1876 used wires to connect telephones.
Now, cell phones use air waves to carry the sound. We can carry mobile phones anywhere because these are small and can be used in moving conditions. Voice recording, video recording and music can also be played with mobiles. It is also a very cheap means of communication.
The means of mass communication are television, newspaper, radio, cinema etc. Through these means, the messages are conveyed to large number of people at the same time.
Radio present a variety of programmes in different languages. All India Radio (AIR) broadcasts the programme through Akashwani.
Cinema is a popular means of mass communication and entertainment Indian films are made in different regional languages. The main centre of film industry is Mumbai.
Cable Television/Set Top Box
Cable television has simply revolutionised our life style. Just a few years back, there was only one government-controlled television station called Doordarshan. Today, there are more than one hundred private channels like Zee, Star, Sony, News channels etc. These channels telecast through cable network and dish antenna. On TV, we can watch news across the world instantly, live telecast of matches, movies, serials and many more programmes. Films can be seen on television and are also available on DVDs. We can get information within a second from all over the world with these communication facilities. Nowadays, HD (High definition chennals are also available which are very advanced in clarity
Internet and Children
Internet helps the children to abstract their knowledge in various fields.
Earlier we communicated by post. It was time consuming but now we can communicate within a minute or second by using internet.
News from all parts of the world are brought to us by newspapers.
The computer industry has grown tremendously in India. Computers have completely changed the way, in which we communicate with one another. We can communicate through internet with anybody, anywhere in the world. E-mails are sent through internet within seconds. Laptop can be carried anywhere. These are just like mobile phones.
Laptops and tablets are also connected with internet. Now-a-days internet is a wide media of communication. Computers are connected to each other. We have lots of communication aids which help us to increase our knowledge.
OTHER MEANS OF COMMUNICATION
Fax or facsimile is another means of communication. A message sent through a fax machine reaches instantly. The fax machine works through telephone lines.
Satellites are used for communication by radio, television etc. and for providing information related to weather.
Alexander Graham Bell-Association for Deaf.
This is another resource of communication networked through Graham Bell. This is the specific resource and network for those who are hard of hearing. Bell promotes the use of spoken language as well as hearing technology for children with impaired hearing.
Advertisements are a new feature of mass communication. Advertisements reach people through media like newspaper, television, radio, magazines, websites on computers and hoardings.