dusjagr & nano talk on open tools for agriculture research and learning
E content
1.
2. Television is commonly referred to as TV, telly or tube , is a
telecommunication medium used for transmitting sound with moving
images in the monochrome
It is a system for converting visual images in to electrical signals,
transmitting them by radio or other means and displaying then
electronically on a screen
It’s a device with a screen for receiving television signals
3.
4. Farnsworth won the lawsuit against Zworykin and RCA over who invented the
kinescope and the iconoscope. Thus, he’s known as
“the father of television.”
RCA now had to pay Farnsworth royalties to license his patents
Sarnoff said of RCA that it was determined “to collect patent royalties, not pay
them.”
Television started broadcasting in 1939
World War II brought everything to a halt
6. HISTORY OF TELEVISION
Television had been in development since the ’20s and there were experimental broadcasts in the
’30s. TV was introduced to the public at the 1939 New York World’s Fair, but development
stalled during WWII. David Sarnoff, the head of RCA, and William Paley, the head of CBS,
became instrumental in the growth of the television industry
7. The fifties became the golden age of television. In the fifties, more TV sets (70 million)
were sold than children born (40 million).
In 1952 there were 108 TV stations. Ten years later there were 541. Today there are
about 1,600 stations in the U.S.
Early programming included news, sports, game shows, sitcoms, children’s
programming, variety shows and dramas. Most programming was live. Videotape was
also introduced late in the decade.
The big three networks – ABC, CBS and NBC – dominated programming. On any given
night more than 90 percent of viewers were watching one of the big three.
The first issue of TV Guide appeared April 3, 1953, at the cost of 15 cents.
The sixties brought significant changes to the television landscape.
Television journalism came of age thanks to several significant events in American and
broadcasting history.
Broadcasting using satellite technology gave news organizations the ability to go “live”
from almost anywhere in the world. President Richard Nixon’s trip to China was
televised live by all three networks in 1972.
8. •Cable television began to dramatically change the landscape of the industry. No longer just a
“relay” service, cable operators began to offer alternative programming. In 1980 cable penetration
stood at 20 percent. By the end of the decade, 60 percent of American homes received cable.
In 1995 the WB and UPN began offering primetime programming. Thanks to deregulation and
the repeal of financial syndication rules, the traditional broadcast networks, while still losing
audience share, regained their status as powerful television influences.
News programming became a constant presence and programming source. Entertainment
programmers continued to push the envelope.
In 1996, the Telecommunications Act eliminated cable-rate regulation and allowed telco-cable
competition.
Corporate mergers continue to reduce the number of “voices” heard in the television
marketplace.
Digital television (“high def”) becomes more prevalent.
Reality programming becomes TV's favorite programming genre.
TV programming becomes available through the internet, Ipods, cell phones, etc.
9. TELEVISION AND SCIENCE
Television plays a critical role in the public’s understanding of new developments in science.
Once they leave formal education, most Americans rely on television to keep them informed
about science and technology. An important case in point is the genetic modification of
foods, which has been touted as having the potential to increase food yield, enhance the
nutritional value of foodstuffs and decrease the use of pesticides in agricultural practice. Yet
despite the fact that concerns have been raised about the potentially harmful effects of
genetically modified food on human health and the environment, the American public to a
great degree remains unaware of the scope and extent of the products of this technology.
10. ROLE IN EDUCATION
Television has been given considerable importance in many countries as a source
and tool of teaching.
The success stories of using television for education in many countries has negated
the concept that television is basically on entertainment oriented medium and it is
hostile to thoughts
Television is adaptable and can follow different approaches when used in different
educational situations
Television can be attached with school curriculum and time tables
The role of television is neither fixed nor easily tangible and measured
13. MASS MEDIUM STAGE
In 1948, only 1 percent
of American households
had a TV set.
By the early 1960s,
more than 90 percent
of all homes had a TV.
14. COMMUNICATION
Importance of television to communicate ideas, information, skills and attitude has
been affirmed by researches. You should attempt to study various report published
to educational television in different countries in different situations.
In other words director of BBC “next to home and school I believer television to
have a more profound influence on human race then any other medium of
communication”
If media is to work as an effective teaching tool then certainly it is helping hand
towards, achieving the aim and objectives of education
Media is an agent of boost cultural economic and social development activity
15. SOCIAL IMPACTS OF TELEVISION
Today, the average American watches close to four hours of TV each day. Based onToday, the average American watches close to four hours of TV each day. Based on
this, by age 65, the average U.S. citizen will have spent nearly 9, nonstop, 24 hour-this, by age 65, the average U.S. citizen will have spent nearly 9, nonstop, 24 hour-
a-daya-day years glued to "the tube”years glued to "the tube”
98. 5 percent of U.S. households have at least one television set98. 5 percent of U.S. households have at least one television set
90% of U.S. households have two or more TV sets90% of U.S. households have two or more TV sets
87% of U.S. households have at least one VCR or DVD player87% of U.S. households have at least one VCR or DVD player
The average U.S. home has the TV on more than 51 hours a week. (Obviously, theThe average U.S. home has the TV on more than 51 hours a week. (Obviously, the
TV is on many more hours a week than each family member spends watching it.)TV is on many more hours a week than each family member spends watching it.)
16. WHY WE WATCH TV
We like to be entertained.We like to be entertained.
We like excitement.We like excitement.
We like to see handsome men and sexy women.We like to see handsome men and sexy women.
We like to vicariously (and safely) experience the experiences of other people.We like to vicariously (and safely) experience the experiences of other people.
We like to be drawn into fantasy worlds that we will probably never be able toWe like to be drawn into fantasy worlds that we will probably never be able to
experience first hand.experience first hand.
Maybe most of all, we like to passively relax in front of "the tube," select ourMaybe most of all, we like to passively relax in front of "the tube," select our
vicarious experiences, and let them flood over us without any real effort on ourvicarious experiences, and let them flood over us without any real effort on our
part.part.