Read in the dark
a. Based on the research results of Japanese company ("Nemoto") and Swiss company ("RC Tritec"), since 1994, a kind of luminous ceramic from China has been found on the basis of D & 35x27. The ceramic is based on D & 35x27 aluminum d e strontium. C & 35x27. Since then, luminova has been granted a patent and started to become a widely applicable tritium substitute until \ \ x27; Tritium is a slightly radioactive substance. Another problem is that its life span is only 12 years.
Super brightness under ultraviolet light can accumulate energy. When the light source is turned off, the accumulated energy springs in the form of light.