was:Networking a Macintosh SE/30 - color from B&W

I remember reading in the 60's about a method that used flicker to make the visual system perceive muted colors on a monochrome TV screen. I think it had the small problem of causing eye strain, head aches and in extreme cases, seizures in susceptible individuals. Tek developed a LCD shutter tech in the 70's that displayed multiple colors from a mono screen, but that's not really color from a mono screen. --jim -----Original Message----- From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org]On Behalf Of David Riley Sent: Thursday, November 08, 2012 4:41 PM To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Networking a Macintosh SE/30 On Nov 8, 2012, at 7:10 PM, Schindler Patrik wrote: anything in front of it. I think Tony's point (pathological corner case though it is) is that a B&W CRT *can* display color with such a filtering device; it's how early color TVs worked. The SE/30 has no method for doing so on any existing video controller, though I suppose one *could* make such a card if one were suddenly in possession of far too much spare time. Come to think of it, I believe it's also how modern DLP projectors work as well; if you move your eyes fast enough on a DLP projection, you can see the individual colors as ghosted images on your retina. It's not a CRT, of course, but the color concept is the same. - Dave