World’s Super Scientists – John Logie BairdGeneral Knowledge » Scientists »
There is Life in Live Telecast – John Logie Baird
Baird John Logie (1888 to 1946), Inventor of Television was born in 1888 in Helensburg near Glasgow.
All through his life he had ‘a hand to mouth existence’; on the top of it, he was suffering from spells of ill-health.
At the age of 26 after becoming an engineer, he worked in an electronic company on a meagre salary.
Baird John Logie changed occupations — manufacturing socks, later began making jam and sauce — these were not giving proper dividends.
During a journey to Trinidad, he had discussions with the captain of the ship in his cabin regarding the possibility of sending pictures through the air. The seed for the thought of broadcasting was sown; attempts to nurture it started.
In 1922 Scientist Baird at the age of 34 started experimentation to invent television. He improvised cardboard boxes, fitted a disc with many holes, rotated it with an illuminated source at its back; such a source was either a projection lamp, selenium cell, neon lamp or radio valves.
On rotating the disc, the light spots could be detected on a screen.
1924 : the first television transmission tube was called the iconoscope invented by Vladimir Cosma Zworykin.
In 1924 Scientist Baird refined the process of transmission and receiving the signals; he succeeded in catching up to a distance of three yards.
In 1925 with poor resources at his command, Baird made a primitive demonstration where pictures were blurred. On improving the light source, the conversion of light into electrical signals was more effective; quality of the picture improved.
In 1929 Baird John Logie demonstrated colour television.
In addition to the handicap of shortage of money to proceed with his trials, Marconi’s “wireless system” (radio) over-shadowed Baird’s television round about the year 1936. Such were the teething troubles!
Colour TV – However, colour TV tried to replace the black and white TV round about the year 1945.
The Indian scene
Television was started in India on 15th September 1959 with the first demonstration of a closed circuit TV at an Industrial exhibition organized in Delhi — The equipment was given by Philips India Ltd.
Present name for TV in India is Doordarshan – DD.
From the times of radio, which is an audio pleasure, we have advanced further to TV, an audio-visual pleasure!
- Prayer and Breakfast TV -bright start of the day.
- Advertising medium.
- Drama, plays, movies and feature films.
- News and current affairs.
- Programmes for children like cartoons, animation scenes.
- Programmes for arts and sciences — Science and Technology.
- Light entertainment.
- Education and religion.
- Sports : young and old derive much enjoyment from the world of Sports.
We are in a shrinking world with facilities for International travel, Tourism and Television. In TV, the pictures are being bounced by satellite from one continent to the other.
Colour, contrast, brilliance, volume adjustments in a TV set give the desired enjoyment while viewing a programme.
Humour on TV : The head of the family claims he has six controls on his TV — his wife and five children.
TV : true vision – the entire world in a box.
grant that the light of unity may envelop the whole earth, and that the seal, “the Kingdom is God’s”, may be stamped upon the brow of all its peoples.
“It is not for him to pride himself who loveth his own country, but rather for him who loveth the whole world. The earth is but one country, and mankind its citizens.”
The provision of specialist consultant services at a distant site through telecommunication network by means of closed – circuit television. The transmitted telemonitoring data helps in telediagnosis.