Well actually it's not just a CRT, it's a magnetic deflection CRT picture tube. There were much earlier and simpler CRT's in commercial production: http://www

Well actually it's not just a CRT, it's a magnetic deflection CRT picture tube. There were much earlier and simpler CRT's in commercial production: http://www.magiceyetubes.com/ http://www.magiceyetubes.com/