Science  /  Dispatch

The Last Scan

Inside the desperate fight to keep old TVs alive.
Television sets.
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CRTs were once synonymous with television. By 1960, nearly 90 percent of American households had one. But at the turn of the millennium, their popularity rapidly decayed as LCD panels flooded the market. Even though CRTs comprised an estimated 85 percent of US television sales in 2003, analysts were already predicting the technology’s demise. In 2008, LCD panels outsold CRTs worldwide for the first time. Sony shut down its last manufacturing plants that same year, essentially abandoning its famous Trinitron CRT brand. By 2014, even stronghold markets like India were fading, with local manufacturers switching to flat-panel displays.

Despite all this, picture tube televisions continue to linger. You’ll find them in museums, arcades, video game tournaments, and the homes of dedicated fans. But as the CRT slips further into obsolescence, devotees like Lui are navigating a difficult transition between simply maintaining an aging device and preserving a piece of technological history.

The concept of television predates the electronic CRT display by decades. Scholar Alexander Magoun’s book Television: The Life Story of a Technology describes it as a natural extension of the telegram, fax machine, and telephone. In 1879, a cartoonist envisioned families communicating across continents via a wall-mounted “telephonoscope.” In the 1880s, German inventor Paul Nipkow imagined capturing slices of an image through holes in a spinning disk, then projecting the light patterns through an identical disk on the other end. Russian scientist Constantin Perskyi reported on this new theory of “television by means of electricity” at the 1900 Paris world’s fair, coining the term that we still use today.

The first actual working television, demonstrated by Scottish inventor John Baird in the mid-1920s, used Nipkow’s mechanical disk idea to show dim, fuzzy images of a ventriloquist dummy named Stookie Bill. Several similar devices followed, some backed by major companies like GE and AT&T. By 1928, Americans could pay for a mechanical “radiovision” kit from inventor Charles Jenkins, and tune in for thrice-weekly “radiomovie” pantomimes on his broadcast network. But these TVs were inherently limited by the number of holes you could put on a disk, and the incredibly bright lights that were required to capture an image.

When the Great Depression hit, support for mechanical TVs petered out, and companies began funding versions that scanned electronic lines across a screen. Over the next several years, these experiments produced a technology that would last for almost a century.