Why does the luminous coating turn yellow after a long time?
I believe that when you own a watch for more than ten years, it is not difficult to find that the hands and hour markers of the watch begin to yellow, and this phenomenon will especially appear on the scales and hands with luminous function.
For the yellowing phenomenon of the luminous function of the watch, according to statistics, this phenomenon will only appear after 12.5 years of accumulation, because this means that the luminous display begins to age and gradually loses the luminous effect, which is why one of the features of antique watches is the scale and the pointer are a little yellow cause.
The dial with luminous function will turn yellow after a long time. The luminous material is generally a material called "tritium". The reason why many watches like to use it is that it can be self-stable and stable without absorbing the light source. Moreover, its brightness is 100 times that of the traditional luminous coating, and the radiation damage to the human body is small, so many watch brands use it as the luminous coating for watches. However, no matter how sharp a knife is, it will rust one day. Tritium will gradually age and turn yellow after more than ten years of continuous luminescence.
