LUME! A wonderful article by Ted Cossins

LUMINOSITY IN WATCHES
by Ted Cossins (XpatUSA)

Introduction
This article says nothing particularly new, but its purpose is to bring together information as it relates largely to the use and perception of luminous material in watches. A luminous watch is not of much help if we can't see it in the dark, so first we take a brief look at night vision and the performance of the dark-adapted eye. Then we look at the kinds of materials used and examine their properties and application. For those of us that need more, some detailed references are provided throughout the text.

for the entire article:
http://www.kronometric.org/article/lume/

Great read. Thanks for sharing!

It's incredible how long ago these luminous paints and pigments
were being used. With watches it's DEFINITELY one of the most
interesting and attractive features. Not to mention it's just plain
cool ! Thanks for the link ! It was terrific seeing all the different
types of lume out there, and how bright they are as well !!!