https://opg.optica.org/oe/fulltext.cfm?uri=oe-33-3-6017&id=5...
A little off topic, but Figures 12 and 13 show optical coherence tomography images of Kindle Paperwhite display layers. The E-Ink, touch screen electrodes, and lightguide layers are shown.
A little off topic, but on the subject of E-Ink, here is an analysis of a Kindle display with optical coherence tomography images: https://arxiv.org/abs/1605.05174
"Optical teardown of a Kindle Paperwhite display by OCT": https://arxiv.org/abs/1605.05174
OCT = Optical Coherence Tomography
This paper shows what is going on inside the display.
"Knowledge and productivity are like compound interest. Given two people of approximately the same ability and one person who works ten percent more than the other, the latter will more than twice outproduce the former. The more you know, the more you learn; the more you learn, the more you can do; the more you can do, the more the opportunity - it is very much like compound interest."
That is what depression felt like to me as well. I’ve written a book about it, Can’t Be Trusted. It is a memoir about engineering, mental health, and aviation. Here is more information about me and my book: https://cantbetrusted.org/?page_id=262 As a laser engineer with an interest in computing, I think this book would be of interest to the tech community.