Pen For Dim Light

[ZaciOne]

Hi,

 

I was writing some notes on paper in dim light (near darkness) the other day, while i was wondering if there was a better option. I just used a regular cheap pen with blue ink, and i didn't really see much of what i was writing.

 

So i thought about how a pen works - it is by laying down ink on paper. Being especially true for regular pens (as opposed to fountain pens), there is a lot of friction involved in the action, all concentrated at the tip of the nib. So i was wondering, did someone ever manage to use this energy? I could imagine that a viscous substance could be designed which would change color when it was pulled apart. But wouldn't it be cool if we could if we could design ink that would temporarily emit light when 'pulled apart', that is, during writing? Maybe related to those hand warmers one can buy where there is a chemical reaction that emits heat - moving the ink would cause a chemical reaction. In this case, while the person would be writing, the chemical reaction would be happening. Kinda like this:

 

Inky substance in pen barrel ------- friction ------> chemical reaction emitting light ---------> blue or black ink

 

So essentially during writing, one would see the past sentence or so, but later it would all just turn to some regular looking ink.

 

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I also thought whether it would be possible to add the 'glow powder' that is used for traffic signs to be more reflective, but i suppose the grain is to large to be applied to paper in writing.

 

 

Does anyone have any thoughts on this? Did you see a similar pen already made somewhere?