I suppose it's not an "understanding" issue, I have just read the article again and everything is actually commendably clear, it's more a "need to know" and "retention" issue.
I again glossed over the formula bits knowing that I would NEVER remember any of them or how to make use of your imparted knowledge.
As for other questions, hmm. The main mystery to me, as I keep so many pens inked up at any one time, is how pens lose their ink when completely sealed off to the outside world.
My Noodlers pens in particular
Thank you again for a wonderful reference page.
I have worked in several ingeneering fields.... and I think, it is not about remembering a formula, but knowing that it exists and when you need it, you know where to find it. For "when you need it" I only need to remember the principle, the application. I have to admit, I could not remember the formula...
....how do they loose ink? Very good question. Most cartridges and inner caps are made of plastic (PE,PP, PU), which is permeable to water. Ink is dirty water, 2 - 5 % other stuff. I recommend, when you put a pen away for longer, empty and clean it with water.
I don't know anything about the design of Noodler pens to comment on why they would dry out quicker.
It is my pleasure to write about fountain pens and being able to be of assistance