Hi,
I used to work in airborne instrumentation with a heavily colour-blind
scientist. He would occasionally pop out from under an aircraft
instrument panel clutching a bundle of coloured wires to ask "which one
of these is red?" before diving back into the bowels to make some
critical connection.
On the other hand, I was flying with him near Wagga doing airborne
studies of crops at different stages of growth (cropdusting-type flying
with instruments), and found that he could easily distinguish between
crops at different stages of growth that all looked to the same shade of
green to me (and I pass the Ishihara tests with the correct numbers
sticking out like {very obvious things}, hold a CPL, and believe my
vision to be normal). He also had a tendency to choose colours for plots
of data that were very difficult for everyone but him to see (e.g. light
yellow wiggly line on a pale yellow background, projected on the wall
during a presentation to a roomful of people).
And the colours he'd select for his clothes were disastrous. ;-)
Can any medical types suggest if this is common - an ability of
colourblind people to _better_ distinguish some other colours?
I must say, in terms of aviation and colour blindness, I do wonder why
the focus often seems to be on the ability/disability of colour blind
people to use existing colour cues in navigation and instrumentation,
rather than designing and standardising different colour schemes and
other cues to eliminate the dependence on 'normal' colour vision.
Cheers,
Andrew.
--
http://www.aao.gov.au/AAO/local/www/ajm/
-----------------------------------------------------------
Dr. Andrew McGrath, Instrumentation Scientist
Anglo-Australian Observatory http://www.aao.gov.au
PO Box 296, Epping, 1710, NSW, Australia
ph. +61 2 9372 4848 fax: +61 2 9372 4880
-----Original Message-----
From: Lots of people
[paraphrase] Lots of discussion about electrical wire colours and degrees of
colour blindness.
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