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Visualization
- Visualize The Future
- Wide Angle
- Hollywood
- A Mixed View
- Electromagnetic
- Vision
- Color
- X-Ray
- Lasers
- Optics in Everyday Life
- Optics in Science
- Light Microscopes
- Electron Microscopes
- Medical Imaging
- Eye Glasses
- Surveillance
- Telescopes
- Optics in Review
- TV
- Scientific Visualization
- Virtual Reality
- What's Next ?
Other Pages
Visualizing The Future
( TV )
The Boob Tube
Some people have no telephones or refrigerators;
but they have a TV. Most statistics claim an estimated 99%
of American homes have at least one TV. But, this claim is
no longer sufficient in estimating the size and scope of the
TV market. Without authoritative background, it's fair to
say most homes have more than one TV.
Some homes have a TV in every room, including the bathroom
and garage. Plus, there are portable TVs. As if that's not
enough, people spend hours in bars watching TVs. Now, TV shows
are downloadable from the Internet and viewable on screens
that fit in the palm of a hand (the iPod).
One of the most popular past times of prisoners is watching
TV. Trials, wars and Presidential speeches are broadcast on
TV. Clearly, TV is a cultural and technological phenomenon
rivaling the lightbulb, the telephone and the car, perhaps
even more so, considering that the automobile and telephone/cellphone
industries rely heavily on TV advertising to generate sales.
No electronic device causes as much controversy as the TV,
not so much for its technology and money making ability, but
for its content. The severest critics scream, "Too much sex
and violence." Hollywood--the mother of TV--gets the same
digs. V-Chips enable parents to take control over what their
children watch, endorsed by the omni-presence of the FCC,
the media and communications watchdog. But for the most part,
TV has charmed us with a host of stars and shows that have
defined American culture. That's not completely accurate.
TV is a global phenomenon.
In America, reruns keep the Golden Age of the 50s alive with
shows like I Love Lucy, Leave It to Beaver, and Ozzie
and Harriet. The success of some shows is overwhelming
and can't be measured. M.A.S.H. is on constantly,
a show that's been on since the 70s. And then, there's The
70s Show. The stars of Friends allegedly commanded
a million bucks per episode. But that's trade talk. Salary
information on TV stars is as mythical as the shows they star
in. However, some of TVs biggest stars, like Oprah Winfrey,
Bill Cosby and Merv Griffin (amongst many others), are repeatedly
reported as the wealthiest entertainers in show biz.
The galaxy of stars TV has given the public includes some
of the most popular entertainers in entertainment history.
Lucille Ball, Red Skeleton, Bob Hope, Johnny Carson...these
names are legends. Shows like Jackie Gleason, Bandstand,
Rowan and Martin's Laugh-In (where Goldie Hawn got her
start), Gilligan's Island, I Dream of Genie, and dozens
more, have become cultural phenomena. The Kennedy assassination
was broadcast on TV. Ed Sullivan introduced the Beatle's to
America. The Vietnam War was the first war to be broadcast
daily into the homes of Americans. America--and the world--witnessed
9/11 on TV.
If anyone wants to sell something, TV is the place to do it.
The cost of 30-second spots during prime time and specialized
events like the Super Bowl or the Academy Awards run into
the millions. Major corporations like McDonalds and Coca-Cola
spend more on TV advertising than any other corporate expenditure.
And people love to hate commercials.
When the remote came along, it was the first means viewers
had of avoiding commercials. But timing was critical. Mindless
flipping through channels or excessively long kitchen, bathroom
and telephone call breaks could mean missing part of a program.
And programmers are quite savvy. They can time a program in
such a way that if a viewer is not watching the second a program
returns, they could miss a vital plot link.
Cable and satellite TV came along and promised an end to nuisance
advertising. However, regular broadcasting networks still
thrive and commercials remain a necessary evil. Some commercials
are very well put together and even enjoyable to watch. They've
become mini-programs, in a sense, with humor, dialog, story
lines and all the special effects found in Hollywood. Like
Hollywood's Oscars, TV's Emmys, the TV commercial world has
the Clio Award. A number of well known actors, directors and
other media professionals got their start in commercials.
Regardless, the goal remains the same: sell something.
TV trivia rivals movie trivia. Who was the first female broadcaster?
When was the first color TV introduced? What was the first
commercial ever aired? What was the first televised sports
event? How old is Al Bundy?
TV History
Through the early 20th century, up to the
Golden Age of TV (late 40s and 50s), to HDTV and Satellite
TV today, the history of television broadcasting is vast.
The US began experimental mechanical broadcasting in the mid-to-late
1920s, and experimental electronic (Cathode-ray-tube) broadcasting
in the late 30s, early 40s.
In the 1870s, the "selenium camera" was a device that would
allow people to "see by electricity." Other similar devices
at the time were called telectroscopes. Eugen Goldstein introduced
"cathode rays" to describe the light emitted when an electric
current was forced through a vacuum tube. Sheldon Bidwell
experimented with telephotography. In Germany, Paul Nipkow
patented the "electric telescope."
Alexander Graham Bell, along with others of his time, imagined
"seeing" through a telephone. Bell called his device, simply,
the "photophone." During the 1st International Congress of
Electricity held at the 1900 World's Fair in Paris, "distance
vision" was a popular subject. Allegedly this is also where
the word "television" was first heard. In 1927, Bell Laboratories
and the Department of Commerce held the 1st long-distance
transmission of a live picture and voice simultaneously.
Then secretary of Commerce Herbert Hoover was the "star" of
the show, announcing the technological breakthrough. Ironically,
it was another World Fair in 1939 where RCA's David Sarnoff
generated new interest in RCA's new line of TV receivers that
had to be connected to radios for sound.
Coaxial cable lines (pure copper or copper-coated wire surrounded
by insulation and an aluminum covering) used to transmit television,
telephone and data signals were first laid by AT&T between
New York and Philadelphia in 1936. In 1945 the 1st experimental
microwave relay system was introduced by Western Union between
New York and Philadelphia. This distribution system transmitted
communication signals via radio along a series of towers.
With lower costs than coaxial cable, microwave relay stations
carried most TV traffic by the 70s.
Between 1945 and 1948 the number of commercial (as opposed
to experimental) television stations grew from 9 to 48 and
the number of cities having commercial service went from 8
to 23. Sales of television sets increased 500%. In 1946 Peter
Goldmark, working for CBS, demonstrated his color television
system to the FCC. Also in the late 40s, playwrights Arthur
Miller, Paddy Chayevsky and others introduced Americans to
high drama in programs like Kraft Television Theater, Studio
One, and the Actors Studio. John Cameron Swayze
introduced America to weekday news programming via the Camel
Newsreel Theater in 1948. By 1960 there were 440 commercial
VHF stations, 75 UHF stations, and 85% of U.S. households
had a television set.
The 1960s through the 1980s represented a period of expansion
that spawned a slew of new devices and technology. In 1962,
the world experienced the 1st transatlantic reception of a
television signal via the TELSTAR satellite, launched by NASA.
By 1967 most network programming was in color and in 1972
half of U.S. households had a color television.
In 1975, HBO, then a fledgling company, bought the rights
to the live transmission of The Thrilla from Manila,
the heavyweight championship fight between Muhammad Ali and
Joe Frazier. Subscribing cable viewers saw the historic fight
as it was happening. The ability of satellite communications
to broadcast real-time images from around the world, revolutionized
TV, and it revolutionized the way humans viewed the world.
In 1978 PBS was the 1st network to deliver all its programming
via satellite instead of landlines.
Home videotaping was another major technology introduced during
this time. In 1972 the Phillips Corporation introduced video
cassette recording (VCR) for the home. Sony's Betamax format
in 1976 morphed into RCA's VHS format. By 1985 the VHS format
dominated the U.S. home market.
Fiber optic cable was introduced in 1970 by Corning's Robert
Maurer, Donald Keck, and Peter Schultz. Fiber optic cable
is transparent rods of glass or plastic stretched so they
are long and flexible and transmit information digitally using
rapid pulses of light. Fiber optic cable could carry 65,000
times more information than conventional copper wire.
High definition television (HDTV) was also introduced during
this period. In 1981 NHK, the Japanese National Broadcasting
Company demonstrated their 1,125 line HDTV system to the Society
of Motion Picture and Television Engineers at a conference
in San Francisco. The sharpness of a television picture is
a function of the number of lines per screen--the more lines
the sharper and more vivid the image. In the 1920s, pictures
were broadcast between 30 and 60 lines.
Convergence
The convergence--or marriage-- of digital
technologies, broadband networks, movies, radio and television
will spawn a new device that does it all and fits in the pocket.
Even those who can't see or hear will be fitted with artificial
intelligence, allowing them to see and hear better than most
people do normally. Shows will become so interactive (some
form of virtual reality) it will be impossible to tell the
difference between fantasy and reality. The viewer will be
the star.
In the new millennium, analog TVs still proliferate, but this
is changing fast. Digital TV (DTV) is setting new standards.
Satellite dishes now pepper backyards and rooftops all over
America. TV shows are viewed on flat screen computer monitors,
downloaded straight to a large screen, high definition home
entertainment system, or downloaded to portable devices like
iPods.
Somewhere, there's a guy in a cheap motel room, still trying
to adjust a coat hanger to get better reception on a black
and white TV. It's late at night, and the best he can hope
for is an info-commercial selling some exercise device designed
to shape abdominal muscles into a washboard. If he's lucky,
he might get a re-run of I Love Lucy.
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