I did some poking aroung and found this:
http://www.physicsforums.com/showthread.php?t=178624
I'm sure someone has a demo of this effect on the net.
--jim
-----Original Message-----
From: cctalk-bounces at
classiccmp.org
[mailto:cctalk-bounces at classiccmp.org]On Behalf Of jim davis
Sent: Thursday, November 08, 2012 5:18 PM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: RE: 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:
Am 08.11.2012 um 21:48 schrieb Tony Duell:
A B/W CRT
can't display color.
Not even with a rotating disk of colour filters in front of it? (CBS
system???)
Even then not. The picture of the phosphor stays monochrome, regardless of
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