Clik here to view.
A new expert in town
There is a new expert in town. Well, in the town of Answers.com. Here are some of his more recent articles:Kepler's LawsJohannes Kepler developed three simple laws that described the motion of the...
View ArticleClik here to view.
The joy of vermilion, take 2
My recent post on the ambiguity of the word "vermilion" sparked some interesting discussions with a few of my friends. In this blog post and the next, I will share their expert perspectives. Today, I...
View ArticleClik here to view.
Arranging paint and (once again) vermillion
If you have ever picked up a card of paint samples and said to yourself "Gee whiz! I love the feel of the way these colors go together. The aesthetic beauty is overwhelming!" then you should probably...
View ArticleClik here to view.
Silly-opathy
What is homeopathy?Homeopathy is a bit like the old "hair of the dog that bit you". If I have a headache, I should be treated with something that gives me a headache. That something will be highly...
View ArticleClik here to view.
Stupid piano tricks
Your grandparents may have told you tales of a musical instrument called a "piano". This crude instrument had keys on it, much like today's pianos, but it lacked the ability to produce its own drum...
View ArticleClik here to view.
TAGA 2014 in review
When I started in the printing industry, we didn't have all those fancy colors for ink. All we had was white. Decorative packaging was white, but that was ok cuz all we had to sell was rocks. Books...
View ArticleClik here to view.
Pythagoras' law of harmony
Once upon a time, there were four little factoids rolling around in John's brain. Being in such a tiny and empty space, they were bound to eventually bump into each other. And when they did, it was...
View ArticleClik here to view.
Getting the most color for your ink, part 1
So, my wife says to me the other day, "Hey Math Guy, you should do a blog about ink mileage - you know, making the most efficient use of pigments." I love it when she calls me Math Guy. It's so much...
View ArticleClik here to view.
Getting the most color for your ink, part 2
In the first part of this series, I made the point that mushy dots are efficient dots. The logic is pretty simple. Higher dot gains means more color for the same tone value. I went on to give some lame...
View ArticleClik here to view.
Get out the pitchforks!!
Get out the pitchforks! It's time to storm the castle at the US Patent Office and at the headquarters of Amazon! The USPTO just granted a patent for something that we have been doing for years.Or so...
View ArticleClik here to view.
Scribble Pen, a real Color Picker Pen?
I wrote a blog post a while ago called "Color Picker Pen". This pen had a color sensor and could change the color of the ink to match. There weren't a lot of technical details available on the pen, but...
View ArticleClik here to view.
Scribbling away that scratch on my car
I received an interesting comment/question on a LinkedIn thread about the Scribble pen. Answering this question provides me the opportunity to touch on a number of topics and color science, as well as...
View ArticleClik here to view.
The color of a bunch of dots, Part 5
It's about time! People have been banging on my door, tackling me in parking lots, and calling me at 3:00 AM to demand that I finish my series of blog posts about halftones. Well, maybe the part about...
View ArticleClik here to view.
The latest in stereo cosmetics
I was pseudo-randomly looking through patents today, and came across one that was just plain interesting. US patent #8,421,769 is entitled "Electronic Cosmetic Case with 3D Function". Normally, when I...
View ArticleClik here to view.
RGB into Lab
I get this question all the time. More often, it's phrased as a statement. Every once in a while, it's an in-you-face assertion. I could be referring to my halitosis, but not this time. I am talking...
View ArticleClik here to view.
Standard deviation - why the n and n-1?
When some people hear the word "deviant", they think about people who do stuff with Saran Wrap, handcuffs and Camembert cheese. But I'm a Math Guy, so I don't think about those things. I am reminded of...
View ArticleClik here to view.
That's a yellow of a different color!
I checked out the yellow pages to find a yellow cab to take me down the yellow brick road to the yellow submarine so I could get a can of mellow yellow. So many yellows! Are they all the same?I have...
View ArticleClik here to view.
DIY with RYB - Printing with the artist's primaries
I'm going into the email bag once again for this week's blog post. Dear John The Math Guy,Why is it that we print with cyan, magenta, and yellow? I learned in grade school that red, yellow, and blue...
View ArticleClik here to view.
When light reflects from stuff
I responded to a recent discussion on LinkedIn, baring my soul about the measurement of the color of metallic stuff. I have never seen a standing ovation on a LinkedIn discussion thread, but... another...
View ArticleClik here to view.
An illustrated compendium of the indicatrix throughout history
For this week's blog post, I went in search of that frumious beast, the indicatrix. This indicatrix is the link between the previous blog post that describes the nature of reflected light, and the...
View Article
/fit-in/580x348/filters:format(webp)/english-betterindia/media/media_files/2026/09/17/balaghat-4-2026-09-17-19-01-31.png)
