Braun HF 1, Germany, 1958 A modern 82" (208 cm) LCD television.An American family watching television in the 1950s.Television antenna on a rooftop

Discover great deals on the many hard to find and one of a kind items available only on ebay!

Television

Television is a telecommunication system for broadcasting and receiving moving pictures and sound over a distance. The term has come to refer to all the aspects of television programming and transmission as well. more...

HomeHome
ComicsComics
ComputersComputers
ElectronicsElectronics
MoviesMovies
TelevisionTelevision
Aeon FluxAeon Flux
AngelAngel
Band of BrothersBand of Brothers
Battlestar GalacticaBattlestar Galactica
Buffy the Vampire SlayerBuffy the Vampire Slayer
Dark ShadowsDark Shadows
Doctor WhoDoctor Who
FireflyFirefly
Inspector GadgetInspector Gadget
InuyashaInuyasha
Knight RiderKnight Rider
Looney TunesLooney Tunes
LostLost
Lost in SpaceLost in Space
MacGyverMacGyver
My So-Called LifeMy So-Called Life
Quantum LeapQuantum Leap
RobotechRobotech
SmallvilleSmallville
SopranosSopranos
South ParkSouth Park
Star BlazersStar Blazers
Star TrekStar Trek
Tranzor ZTranzor Z
Twilight ZoneTwilight Zone
VoltronVoltron
YamatoYamato
ToysToys
Video GamesVideo Games


History

The development of television technology can be partitioned along two lines: those developments that depended upon both mechanical and electronic principles, and those which are purely electronic. From the latter descended all modern televisions, but these would not have been possible without discoveries and insights from the mechanical systems.

The word television is a hybrid word, created from both Greek and Latin. Tele- is Greek for "far", while -vision is from the Latin visio, meaning "vision" or "sight". It is often abbreviated as TV or the telly.

Electromechanical television

The German student Paul Gottlieb Nipkow proposed and patented the first electromechanical television system in 1885. Nipkow's spinning disk design is credited with being the first television image rasterizer. However, it wasn't until 1907 that developments in amplification tube technology made the design practical. Meanwhile, Constantin Perskyi had coined the word television in a paper read to the International Electricity Congress at the International World Fair in Paris on August 25, 1900. Perskeyi's paper reviewed the existing electromechanical technologies, mentioning the work of Nipkow and others.

In 1911, Boris Rosing and his student Vladimir Kosma Zworykin achieved a television system that used a mechanical mirror-drum scanner to transmit, in Zworykin's words, "very crude images" over wires to the electronic Braun tube (cathode ray tube) in the receiver. Moving images were not possible because, in the scanner, "the sensitivity was not enough and the selenium cell was very laggy." Zworykin later went to work for RCA to build a purely electronic television, the design of which was eventually found to violate patents by Philo Taylor Farnsworth.

On March 25, 1925, Scottish inventor John Logie Baird gave a demonstration of televised silhouette images at Selfridge's Department Store in London. But if television is defined as the transmission of live, moving, half-tone (grayscale) images, and not silhouette or still images, Baird achieved this privately on October 2, 1925, and gave the world's first public demonstration of a working television system to members of the Royal Institution and a newspaper reporter on January 26, 1926 at his laboratory in London. Unlike later electronic systems with several hundred lines of resolution, Baird's vertically scanned image, using a scanning disc embedded with a double spiral of lenses, had only 30 lines, just enough to reproduce a recognizable human face.

In 1928 Baird's company (Baird Television Development Company / Cinema Television) broadcast the first transatlantic television signal, between London and New York, and the first shore to ship transmission. He also demonstrated an electromechanical colour, infrared (dubbed "Noctovision"), and stereoscopic television, using additional lenses, disks and filters. In parallel he developed a video disk recording system dubbed "Phonovision"; a number of the Phonovision recordings, dating back to 1927, still exist. In 1929 he became involved in the first experimental electromechanical television service in Germany. In 1931 he made the first live transmission, of the Epsom Derby. In 1932 he demonstrated ultra-short wave television. Baird's electromechanical system reached a peak of 240 lines of resolution on BBC television broadcasts in 1936, before being discontinued in favor of a 405 line all-electronic system.

In the U.S., Charles Francis Jenkins was able to demonstrate on June 13, 1925, the transmission of the silhouette image of a toy windmill in motion from a naval radio station to his laboratory in Washington, using a lensed disc scanner with 48 lines per picture, 16 pictures per second. AT&T's Bell Telephone Laboratories transmitted half-tone images of transparencies in May 1925. But Bell Labs gave the most dramatic demonstration of television yet on April 7, 1927, when it field tested reflected-light television systems using small-scale (2 by 2.5 inches) and large-scale (24 by 30 inches) viewing screens over a wire link from Washington to New York City, and over-the-air broadcast from Whippany, New Jersey. The subjects, which included Secretary of Commerce Herbert Hoover, were illuminated by a flying spot beam and scanned by a 50-aperture disc at 16 pictures per second.

Electronic television

Although the discoveries of Nipkow, Rosing, Baird and others were extraordinary, little of their technology is used in modern television. By 1934, all electromechanical television systems were outmoded, although electromechanical broadcasts continued on some stations until 1939.

A.A. Campbell-Swinton wrote a letter to Nature on the 18 June 1908 describing his concept of electronic television using the cathode ray tube, which had been invented in 1897 by the German physicist and Nobel prize winner Karl Ferdinand Braun. He proposed using an electron beam in both the camera and the receiver, which could be steered electronically to produce moving pictures. He lectured on the subject in 1911 and displayed circuit diagrams, but no one, including Swinton, knew how to realize the design. Although his system was never built, the cathode ray tube did come to be used to display images in almost all television sets and computer monitors until the invention of the LCD panel.

A fully electronic system was first achieved by Philo Taylor Farnsworth on September 7, 1927, although the low-resolution, light-insensitive camera tube limited the image to a plate of glass painted black, with a straight line etched across it, rotated in front of a bright carbon arc lamp. Seven years later, on August 25, 1934, at the Franklin Institute in Philadelphia, Farnsworth gave the world's first public demonstration of a working, all-electronic television system, with 220 lines per picture, 30 pictures per second. Over a three week period, vaudeville acts, athletic and sports demonstrations, politicians, and hundreds of ordinary citizens were captured on Farnsworth's cameras in the open air and simultaneously shown on his receiving sets.

Read more at Wikipedia.org


[List your site here Free!]

Michael Chiklis Hollywood Tv Actor Original 8x10 Found Photo 93 9Michael Chiklis Hollywood Tv Actor Original 8x10 Found Photo 93 9 $21.78 Photo of all Warner Brothers Studio Television Western Stars-Maverick-SugarfootPhoto of all Warner Brothers Studio Television Western Stars-Maverick-Sugarfoot $5.90
Funko Pop Television: Supernatural - Crowley Vinyl FigureFunko Pop Television: Supernatural - Crowley Vinyl Figure $11.65 Funko Pop Television: Date Mike - The Office - Go Calendar ExclusiveFunko Pop Television: Date Mike - The Office - Go Calendar Exclusive $25.00
Funko Pop Television: Friends the Tv Series - Phoebe Buffay™ Vinyl Figure #32749Funko Pop Television: Friends the Tv Series - Phoebe Buffay™ Vinyl Figure #32749 $6.29 220V Degaussing Degausser Wand Coil for Arcade Monitors Crt Tube Television Tv220V Degaussing Degausser Wand Coil for Arcade Monitors Crt Tube Television Tv $16.29
Funko Pop! Television #749 Cory Boy Meets World Tv Show 2018 Vinyl FigureFunko Pop! Television #749 Cory Boy Meets World Tv Show 2018 Vinyl Figure $19.99 80's Tv Cartoons Buttons (set #1) pins television 1980's eighties new80's Tv Cartoons Buttons (set #1) pins television 1980's eighties new $9.99
Funko Pop! Television The Office - Jim Halpert Figure • Nbc #870 w/ ProtectorFunko Pop! Television The Office - Jim Halpert Figure • Nbc #870 w/ Protector $18.95 New ListingFunko Pop! Tv Schitt's Creek Vinyl Figures David Rose Common And Chase - In HandNew ListingFunko Pop! Tv Schitt's Creek Vinyl Figures David Rose Common And Chase - In Hand $69.99
Sailor Moon Dvd Complete English Collection Tv Series (5 Seasons + 3 Movies)Sailor Moon Dvd Complete English Collection Tv Series (5 Seasons + 3 Movies) $199.95 Funko Pop Television: Stranger Things - Eleven *Mint*Funko Pop Television: Stranger Things - Eleven *Mint* $11.95
Collection Of 400+ Tv Series & 1000+ Movies On 4 Tb Hard DriveCollection Of 400+ Tv Series & 1000+ Movies On 4 Tb Hard Drive $790.00 New Listing1952 Contemporary 21 Magnavox television photo print ad vintage advertisementNew Listing1952 Contemporary 21 Magnavox television photo print ad vintage advertisement $9.99
Coca Cola Gas Oil Auto Repairs Metal Sign Arrow Coke Vintage Style Button GarageCoca Cola Gas Oil Auto Repairs Metal Sign Arrow Coke Vintage Style Button Garage $45.00 Funko Pop! GoldenFace Jim Halpert Television: The Office Golden Face 877Funko Pop! GoldenFace Jim Halpert Television: The Office Golden Face 877 $21.97
1946 Motorola Television Schematic Diagrams 1946-19531946 Motorola Television Schematic Diagrams 1946-1953 $24.50 Funko Pop Television: Friends the Tv Series - Monica Geller™ Vinyl Figure #32748Funko Pop Television: Friends the Tv Series - Monica Geller™ Vinyl Figure #32748 $12.70
Dukes of Hazzard The Complete Tv Series Collection Dvd Set Seasons 1 2 3 4 5 6 7Dukes of Hazzard The Complete Tv Series Collection Dvd Set Seasons 1 2 3 4 5 6 7 $58.98 When Calls The Heart Television Movie Collection Year Six New Dvd Season 6When Calls The Heart Television Movie Collection Year Six New Dvd Season 6 $29.16
Funko Pop Television: The Office - Dwight Schrute Vinyl Figure #48498Funko Pop Television: The Office - Dwight Schrute Vinyl Figure #48498 $10.45 Blood+ (Tv) Plus Complete Collection (Anime, Dvd, 2007) New Sealed English!Blood+ (Tv) Plus Complete Collection (Anime, Dvd, 2007) New Sealed English! $48.00
Trumpy Bear- Original as seen on Tv Ships from Dallas Not ChinaTrumpy Bear- Original as seen on Tv Ships from Dallas Not China $56.85 1982 Press Photo Cast of " T.J. Hooker" Television Series on Abc-Tv - syp230421982 Press Photo Cast of " T.J. Hooker" Television Series on Abc-Tv - syp23042 $19.88
Kodansha Tv Volume 7 July 1984Kodansha Tv Volume 7 July 1984 $35.00 New ListingRetro Vintage Gaming Panasonic Color Tv Set. Model No. Ct-27D11ENew ListingRetro Vintage Gaming Panasonic Color Tv Set. Model No. Ct-27D11E $30.00
New ListingMontgomery Ward Airline Solid State Transistor Television Tv Model 11963 B/WNew ListingMontgomery Ward Airline Solid State Transistor Television Tv Model 11963 B/W $40.00 New ListingPhilips 7-Inch Digital Tv Clock Radio Ajl750/37New ListingPhilips 7-Inch Digital Tv Clock Radio Ajl750/37 $85.99
McFarlane Toys The Walking Dead Tv Negan 7" Collectible Action FigureMcFarlane Toys The Walking Dead Tv Negan 7" Collectible Action Figure $14.50 Dark Shadows The Complete Original Tv Series 131 Disc Deluxe BoxSet CollectionDark Shadows The Complete Original Tv Series 131 Disc Deluxe BoxSet Collection $299.00
Kodansha Tv Magazine Volume 3 May 1985 Photos AddedKodansha Tv Magazine Volume 3 May 1985 Photos Added $35.00 Funko Pop Television: The Office - Kevin Malone Vinyl Figure #41884Funko Pop Television: The Office - Kevin Malone Vinyl Figure #41884 $15.94
I Dream of Jeannie 60's Tv Sitcom Major Nelson Collectible Pendant Lapel Hat PinI Dream of Jeannie 60's Tv Sitcom Major Nelson Collectible Pendant Lapel Hat Pin $13.95 Funko Pop! Television: Dinosaurs - Baby Sinclair Funko Pop! Television #961Funko Pop! Television: Dinosaurs - Baby Sinclair Funko Pop! Television #961 $13.95
Forged in Fire As Seen on Tv 2 Piece knife set History Channel 50 Year Warranty-Forged in Fire As Seen on Tv 2 Piece knife set History Channel 50 Year Warranty- $15.99 Dvd's, Tv Series, Blu-Ray, $.99 + The Search You Just Made Is Here In Our ListDvd's, Tv Series, Blu-Ray, $.99 + The Search You Just Made Is Here In Our List $0.99 to
New Listing1 Vintage Mid Century Gold Tv Antenna Rabbit Ears Sputnik Atomic Kitsch Bow TiesNew Listing1 Vintage Mid Century Gold Tv Antenna Rabbit Ears Sputnik Atomic Kitsch Bow Ties $99.95 Funko Pop! Tv: The Office - Casual Friday MeredithFunko Pop! Tv: The Office - Casual Friday Meredith $12.55
New ListingVtg Collectible Mid-Century Television /T.V. Deer Lamp Planter w/Original LightNew ListingVtg Collectible Mid-Century Television /T.V. Deer Lamp Planter w/Original Light $60.00 Battlestar Galactica 2004 Tv series 8x10 photo Grace Park Tricia HelferBattlestar Galactica 2004 Tv series 8x10 photo Grace Park Tricia Helfer $9.50
Gilligan's Island Tv series 8x10 photo Denver & cast inside island homeGilligan's Island Tv series 8x10 photo Denver & cast inside island home $9.50 Funko pop television Tv Veronica Lodge 732 riverdale vinyl figure WbFunko pop television Tv Veronica Lodge 732 riverdale vinyl figure Wb $7.99
Funko Pop Television: The Good Place - Janet Vinyl Figure #46840Funko Pop Television: The Good Place - Janet Vinyl Figure #46840 $10.80 New ListingFunko Pop Tv The Big Bang Theory Bernadette Wolowitz #58 Bbt Nib televisionNew ListingFunko Pop Tv The Big Bang Theory Bernadette Wolowitz #58 Bbt Nib television $34.99
Funko Pop! Tv Stranger Things Eleven in Wig w/ Eggos Chase *Mint*Funko Pop! Tv Stranger Things Eleven in Wig w/ Eggos Chase *Mint* $17.95 New Listing1949 Crosley Television Vintage Print Ad Ultra Fidelity Tv A Whole New ConceptNew Listing1949 Crosley Television Vintage Print Ad Ultra Fidelity Tv A Whole New Concept $14.99
Erin Cummings Actress 8 x 10 Hollywood Original Movies Tv Found Photo b+w 04 1 EErin Cummings Actress 8 x 10 Hollywood Original Movies Tv Found Photo b+w 04 1 E $16.02 Tv Show Collection #3 Dvd Seasons - You Pick Combined Ship $5 Hundreds of TitlesTv Show Collection #3 Dvd Seasons - You Pick Combined Ship $5 Hundreds of Titles $6.00 to
New Listing1949 Philco Television Vintage Print Ad Christmas Just Plug And PlayNew Listing1949 Philco Television Vintage Print Ad Christmas Just Plug And Play $14.99 Funko Pop! Tv: The Office - Dwight Schrute Vinyl FigureFunko Pop! Tv: The Office - Dwight Schrute Vinyl Figure $13.25
Funko Pop Television The Golden Girls Complete Set With Pop ProtectorsFunko Pop Television The Golden Girls Complete Set With Pop Protectors $49.95 Rowan & Martin's Laugh-In Tv series 8x10 photo Goldie Hawn & full cast poseRowan & Martin's Laugh-In Tv series 8x10 photo Goldie Hawn & full cast pose $9.50
Funko Pop Television Dinosaurs Earl Sinclair #959 - Box Flaws - Please ReadFunko Pop Television Dinosaurs Earl Sinclair #959 - Box Flaws - Please Read $10.00 Funko Pop Television The Office Dwight the Dark Lord #1010 Specialty Series NibFunko Pop Television The Office Dwight the Dark Lord #1010 Specialty Series Nib $12.69
Neon Genesis Evangelion Complete Tv 1-26 + 2 Movie Collection New in Usa EnglishNeon Genesis Evangelion Complete Tv 1-26 + 2 Movie Collection New in Usa English $27.98 Funko Pop Tv: Chilling Adventures of Sabrina - Sabrina Spellman and Salem #38866Funko Pop Tv: Chilling Adventures of Sabrina - Sabrina Spellman and Salem #38866 $15.75
Click to see more Television items at www.ebay.com
Prices current as of last update, 08/04/20 8:44pm.

Home Contact Resources Exchange Links ebay