![]() ![]() K D Rogers goes into great detail explaining how an “oscillograph” CRT can be employed to display moving pictures, and how his proposed electronic system is vastly superior to the mechanical scanning systems that were being toyed with at the time. In any event, the article does a good job showing just what was involved in building a “vision radio receiver” and its supporting circuitry back in the day. The flowery language and endless superlatives that abound in the text are a giveaway, too it’s hard to read without affecting a mental British accent, or at least your best attempt at a Transatlantic accent. They apparently took things quite seriously over there at the time, at least judging by the white lab coats and smoking materials nothing said serious research in the 1930s quite like a pipe. “Cathode Ray Television,” reprinted by the Antique Valve Museum in all its Web 1.0 glory, originally appeared in the edition of Popular Wireless magazine, and was authored by one K D Rogers of that august publication’s Research Department. But building your own television receiver in 1933 was probably pushing the envelope for even the earliest of adopters. When something gee-whiz comes along, it’s folks like us who try it out, even if that means climbing steep learning curves or putting together odd bits of technology rather than waiting for the slicker products that will come out if the new thing takes off. He’s no stranger to such public displays, of course - you might remember his interactive public fountain, or this cyborg baby in a window.Ĭontinue reading “Fifteen Flat CRTs And A Bunch Of Magnets Make For Interactive Fun” → Posted in Art, classic hacks Tagged cathode ray tube, crt, deflection, exhibit, magnet, museum, neodymiumīy our very nature, hackers tend to get on the bandwagon of new technology pretty quickly. put a lot of thought into both the interactivity of the exhibit, plus the practical realities of a public installation, which will likely take quite a beating. Users then get to use a selection of tethered neodymium magnets to warp and distort their faces on the screen. In use, each monitor displays video from a camera mounted to the module. ![]() ![]() The modules were then mounted into a console that looks a little like an 80s synthesizer. After locating fifteen of these things - probably the biggest hack here - they were stripped out of their cases and mounted into custom modules. The CRTs that chose for the exhibit were the flat-ish monochrome tubes that were used in video doorbell systems in the late 2000s, like the one used for his CRT Game Boy. To bring this experience to a generation who may never have seen a CRT display in their lives, developed “Deflektron”, an interactive display for a science museum in Switzerland. Watching the picture on the family TV warp and twist like a funhouse mirror was good clean fun, or at least it was right up to the point where you permanently damaged a color CRT by warping the shadow mask with a particularly powerful speaker magnet - ask us how we know. If you were a curious child growing up when TVs were universally equipped with cathode ray tubes, chances are good that you discovered the effect a magnet can have on a beam of electrons. ![]()
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