----- Original Message -----
From: "Dave McGuire" <mcguire at neurotica.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Wednesday, December 21, 2011 4:56 PM
Subject: Re: rl02 disks for cheap on ebay
On 12/21/2011 04:38 AM, Pete Turnbull wrote:
Henk Gooijen wrote:
That page is from my website, I took those
pictures and still have
those packs :-)
I'd swear it is grey, not brown. Are my eyes really getting that bad?
No, I agree, those labels are grey (same as mine)!
My fiancee' and I have the exact same disagreement about Cray J90
racks. We'll both be standing in front of one, I'll say "this is
brown!" and she'll say "you're nuts, that's gray!"
I've used RL01s for most of my life, I have quite a few packs here;
they look distinctly brown to me. I will ask my fiancee' what color she
thinks they are the next time an opportunity arises.
Is there some difference in visual perception going on here?
-Dave
Going OT, but there have been studies about colour. For example, IIRC, blue
causes us to wake up and/or stay awake. So if you are out at a
restaurant/club at night and it's lit in blue, don't be surprised if you
feel wide awake and very energetic.
On the other hand red (or was it purple?) causes us to perceive a period of
time to be quicker than it is (up to 1/3 quicker).
It is my personal belief that whilst we all know about the rods and cones in
our eyes,
that we each have a variation in the number of each. Thus what I see as red,
may be
interpreted by someone else as a slightly darker red.
Along those lines there has been atleast one study, where a computer screen
displayed something like 12 cubes all in a circle (like the face of a
clock). 11 of the squares were the same colour and one was a different
colour. They then surveyed lots of people (including one remote tribe) and
the results were interesting.
For example on one occasion the 11 squares were green and the different
coloured one was blue. However, alot of the tribesmen (and women) struggled
to tell the difference. The theory was that if you have never been exposed
to a particular colour before (or not very often), then the brain would
never learn to recognise and/or interpret it.
Plus, regardless of the cones/rods idea, the data from our eyes may be
interpreted slightly differently by our brains.
FYI, I know all this because I watched a documentary (Horizon on the BBC?)
about it around half a year ago.
On a slightly relevant note, consider 2 colour photocopiers. If you
photocopy the same colour image on both, do both copiers give exactly the
same output colourwise?
Regards,
Andrew B
aliensrcooluk at yahoo.co.uk