luminescent sheets is generally divided

Watch is to facilitate the emergence of people's lives , but to read the time in a dark place but still is a very troublesome thing , we must help other sources . Of course , the three asked the realglow yellow green be part of the solution to this problem, but visually see the time is still one of the important reasons that people like to watch . Above result, people began to fluorescent material coated hands and hour markers and the dial scale , so at night you can easily read the time. Luminescence material is generally divided realglow phosphorescent pigment categories: one is the material is heated, heat radiation and light, and the other is material to absorb energy and is excited to an excited state ( non-steady -state ) and then return to the ground state of the process, in order to light released in the form of energy.