<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Dan Ching:
... is it just the glowring that's prohibited, or all traser products?
BTW, is tritium the same thing they put on the iron sights on guns?<HR></BLOCKQUOTE>
The Glowrings are apparently 5% too strong for you colonials !
The watches seem to be sold in the USA, so it must be a matter of the tiny size of the tubes in the watches. Plus, I guess that they are considered safely placed inside a watch.
And yes, Tritium is used for some gunsights.
At
http://www.traser.com/
click on "Technical"
Edited Quotes:
Colours - ...determined by the phosphor used in production. Choices are very limited ........ The relative brightness of other colours compared to green are as follows :
Green 100 % - Yellow 80% - White 60% - Orange 50% - Red 25% - Blue 20%
Brightness - ... dependant upon the filling pressure, shape and size of the traser. The maximum pressure inside a traser is 2500 millibar. Various configurations ... [of Trasers] Up to 2500 microlambert can be achieved in special lights by coating part of the surface with a reflective white paint.
... Tritium, an isotope of hydrogen, ... half life of twelve years and only a very soft beta radiation which if absorbed with certain luminescent materials was found to be highly effective in producing a cold light.
... a Swiss manufacturing company ... developed a special process of laser sealing Tritium in its gaseous form inside borosilicate glass vials ... The Tritium was completely sealed inside the vials ... could not escape which solved the problems of possible irradiation and loss of luminosity.
... The technical term for a traser light is a Gaseous Tritium Light Source (GTLS) ...
/Quote
lightlover