HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
Comments
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
Latest Analysis
Some humanoid walking robots are also good at running, balancing, and coordinated movements in group settings. Several of our sports robots have won regional or worldwide acclaim in the RoboCup soccer World Cup, or FIRST Robotics competitions. Others include the world's first hockey-playing robot and a trash-talking Scrabble player.
Sherlock Ohms highlights stories told by engineers who have used their deductive reasoning and technical prowess to troubleshoot and solve the most perplexing engineering mysteries.
Melissa Cavanagh of 3DP Unlimited talked to Design News about the company’s large format 3D printer, during Medical Design and Manufacturing Midwest.
The DDV-IP is a two-wheeled self-balancing robot that can deliver cold beverages to thirsty folks on hot summer days. A wireless RF remote enables manual control of the device beyond the act of self-balancing. All of the features of the DDV-IP result in an effective delivery vehicle while providing entertainment to the user.
Eric Doster of iFixit talks about the most surprising aspect of the Microsoft Surface Pro 3 teardown. In a presentation at Medical Design & Manufacturing Midwest, iFixit gave the Surface Pro 3 a score of one (out of a possible 10) for repairability.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 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.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


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.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service