HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Blogs
Blog

Indignation With Taking Liberties

NO RATINGS
View Comments: Newest First|Oldest First|Threaded View
<<  <  Page 3/3
Dave Palmer
User Rank
Platinum
Re: Should color differentiation matter?
Dave Palmer   11/12/2012 2:07:14 PM
NO RATINGS
@TJ McDermott: Being "colorblind" doesn't mean being unable to see colors; it just means that it's more difficult to differentiate between certain colors.

I have deuteranopia, which is one of the most common forms of colorblindness.  While most people have three types of color receptors (red, green, and blue), my eyes only have receptors for red and blue.  Since I don't have specialized receptors for intermediate-wavelength colors, they don't appear as distinct to me as they probably do to you.  For example, the colors gold, light orange, and light green all look pretty similar to me.

This site has some good pictures that illustrate how colorblind people see things.

You're definitely right about labelling wires.  Whenever I have to deal with color-coded wires (red and green; blue is not a problem for me), I usually have a non-colorblind person tell me what color the wires are.  Then I attach small pieces of tape labelled "RED" or "GREEN."

I suppose that if someone wanted to make my life more difficult, they could either lie about the wire colors, or else switch my pieces of tape when I'm not looking.  Thankfully, I've managed to get along well enough with my co-workers that it's never happened.

Interestingly enough, a small percentage of women are said to be tetrachromats, meaning that they have four types of color receptors instead of just three.  That would make them better able to distinguish between colors than regular people.

TJ McDermott
User Rank
Blogger
Should color differentiation matter?
TJ McDermott   11/12/2012 12:28:20 PM
NO RATINGS
The gist of the article is about unapproved substitions, and I agree 100% with the author.  An unapproved substituion is one reason for the KC Hyatt skybridge collapse we discussed several months ago.

The specifics of the article bring up a slightly different question.  Should color be a differentiator?  I know fully well the color standards for wiring, use it in my control panel designs, even agree that such a standard makes a ton of sense.

But what about color blindness?  Somewhere between 5%-7% of the male population has some form of color blindness.  For those, labeling and positioning are the only way to differentiate wires or controls.

NadineJ
User Rank
Platinum
LOL
NadineJ   11/12/2012 11:50:18 AM
This made me laugh and a little sad.

Excuses only come up when critical thinking is absent.  I'm sure we all have stories about others but how many are willing to admit that we've done it too?

<<  <  Page 3/3
Partner Zone
More Blogs
National Instruments sees 5G WiFi and software-enhanced test equipment as advances that will change technology and business.
The new $120,000 Model S P85D boasts a 221-horsepower front motor and a 470-horsepower rear motor that packs a punch. The car is able to go from 0-60 MPH in just 3.1 seconds … quietly.
Bill Gates took to Reddit for an AMA (Ask Me Anything) and fielded fielded questions on everything from his outlook on the future of technology to who he's rooting for in the Super Bowl.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
Design News Webinar Series
12/11/2014 8:00 a.m. California / 11:00 a.m. New York
12/10/2014 8:00 a.m. California / 11:00 a.m. New York
11/19/2014 11:00 a.m. California / 2:00 p.m. New York
2/25/2015 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Jan 26 - 30, IPv6 for Micros – Hands-On
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  67


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Last Archived Class
Sponsored by Stratasys
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2015 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service