miercuri, 26 martie 2008

joi, 6 martie 2008

Who is the inventor of television?


You have really opened up a can of worms with that question! Probably no other invention in history has been so hotly disputed as the prestigious claim to the invention of 'Tele-vision or 'long-distance sight' by wireless.”

Since Marconi’s invention of wireless telegraphy in 1897, the imagination of many inventors have been sparked with the notion of sending images as well as sound, wirelessly. The first documented notion of sending components of pictures over a series of multiple circuits is credited to George Carey. Another inventor, W. E. Sawyer, suggested the possibility of sending an image over a single wire by rapidly scanning parts of the picture in succession.

On December 2, 1922, in Sorbonne, France, Edwin Belin, an Englishman, who held the patent for the transmission of photographs by wire as well as fiber optics and radar, demonstrated a mechanical scanning device that was an early precursor to modern television. Belin’s machine took flashes of light and directed them at a selenium element connected to an electronic device that produced sound waves. These sound waves could be received in another location and remodulated into flashes of light on a mirror.

Up until this point, the concept behind television was established, but it wasn’t until electronic scanning of imagery (the breaking up of images into tiny points of light for transmission over radio waves), was invented, that modern television received its start. But here is where the controversy really heats up.

The credit as to who was the inventor of modern television really comes down to two different people in two different places both working on the same problem at about the same time: Vladimir Kosma Zworykin, a Russian-born American inventor working for Westinghouse, and Philo Taylor Farnsworth, a privately backed farm boy from the state of Utah.

“Zworykin had a patent, but Farnsworth had a picture…”

Zworykin and his televisionZworykin is usually credited as being the father of modern television. This was because the patent for the heart of the TV, the electron scanning tube, was first applied for by Zworykin in 1923, under the name of an iconoscope. The iconoscope was an electronic image scanner - essentially a primitive television camera. Farnsworth was the first of the two inventors to successfully demonstrate the transmission of television signals, which he did on September 7, 1927, using a scanning tube of his own design. Farnsworth received a patent for his electron scanning tube in 1930. Zworykin was not able to duplicate Farnsworth’s achievements until 1934 and his patent for a scanning tube was not issued until 1938. The truth of the matter is this, that while Zworykin applied for the patent for his iconoscope in 1923, the invention was not functional until some years later and all earlier efforts were of such poor quality that Westinghouse officials ordered him to work on something “more useful.”

Baird and his mechanical televisionAnother player of the times was John Logie Baird, a Scottish engineer and entrepreneur who 'achieved his first transmissions of simple face shapes in 1924 using mechanical television. On March 25, 1925, Baird held his first public demonstration of 'television' at the London department store Selfridges on Oxford Street in London. In this demonstration, he had not yet obtained adequate half-tones in the moving pictures, and only silhouettes were visible.' - MZTV

In the late thirties, when RCA and Zworykin, who was now working for RCA, tried to claim rights to the essence of television, it became evident that Farnsworth held the priority patent in the technology. The president of RCA sought to control television the same way that they controlled radio and vowed that, “RCA earns royalties, it does not pay them,” and a 50 million dollar legal battle subsequently ensued.

Farnsworth with his televisionIn the height of the legal battle for patent priority, Farnsworth’s high school science teacher was subpoenaed and traveled to Washington to testify that as a 14 year old, Farnsworth had shared his ideas of his television scanning tube with his teacher.

With patent priority status ruled in favor of Farnsworth, RCA for the first time in its history, began paying royalties for television in 1939.

Philo Farnsworth was recently named one of TIME Magazine's 100 Greatest Scientists and Thinkers of the 20th Century.

marți, 4 martie 2008

Art-o-mat


An Art-o-mat is a recycled and restored vintage cigarette vending machine which sells art instead of cigarettes. The machine in itself is considered an art installation that sells small works of art. All artwork has the overall stored dimension of approximately (2 1/8" x 3 1/4" x 7/8").

Clark Whittington, in Winston-Salem, North Carolina came up with the concept in 1997. The inspiration for Art*o*mat came to artist Clark Whittington while observing a friend who had a Pavlovian reaction to the crinkle of cellophane. When Whittington's friend heard someone opening a snack, he had the uncontrollable urge to have one too.

Early that year, he found a banned/abandoned cigarette vending machine and decided to include it in a solo art exhibition at Penny Universitie, a local cafe. In June 1997, it was installed, along with 12 of his paintings. The machine sold Whittington's black & white Polaroid photographs for $1.00 each. This cafe was open during late night hours on weekends. It was documented that several people, under the influence, purchased art unwittingly.

At the time the exhibit was set to be dismantled, cafe owner Cynthia Giles liked the concept so much she asked for the machine to remain. With her help Whittington began soliciting input and projects from other artists. Today there are 90 machines throughout the United States United Kingdom, Austria and Canada, with over 400 artists from 10 different countries participating to the project. To this day, the original Art-O-Mat machine is at the same cafe, now called Mary's Of Course.

Machines are set to sell pieces from $5.00 to $7.00, by purchasing a special token made for each Art-o-mat machine. The forms of art vary greatly and can include anything from original paintings or pastel sketches, homemade earrings, cast metal works to sculpture created from recycled styrofaom cups.

Artists in Cellophane (A.I.C.), the sponsoring organization of Art*o*mat®, is based on the concept of taking art and "repackaging" it to make it part of our daily lives. Clark continues to manage operations of A.I.C. while producing several new machines per year. He lives and works in Winston-Salem, NC.

A.I.C. maintains the registered trademark for Art-o-mat in the U.S, E.U and Canada.