You do not know watch the luminous material
Watches is to facilitate the emergence of people’s lives, but in a dark place to read time is still a very troublesome thing, we must make use of other sources. Of course, the three asked the table can be a partial solution to this problem, but visually see the time is still important that people like to watch one of the reasons. As a result, some people began to Apply 表针 fluorescent material and the dial on time scales of scale so that at night you can easily read the time.
Almost all of the Panerai watches have luminous feature, from the family name of the view, Luminor, and Radiomir are two kinds of luminous material. Their approach is to dial added a fluorescent coating, and hollowed out from the dial on the time scale to complete the lighting functions
Principle
Luminescence materials generally fall into two categories: one category is heating the material to produce thermal radiation and light, and the other material by the excitation energy absorption and the transition to the excited state (non-steady-state) go back to the ground state of the process, light – in the form of the release of energy. Watch the use of fluorescent coating is the use of the principle of the second category, that is stimulated after the light-emitting fluorescent material. Of course, in addition to daily use, such as fluorescent lamps, television sets and computer screens are all light-emitting principle of the second category.
Watches is to facilitate the emergence of people’s lives, but in a dark place to read time is still a very troublesome thing, we must make use of other sources. Of course, the three asked the table can be a partial solution to this problem, but visually see the time is still important that people like to watch one of the reasons. As a result, some people began to Apply 表针 fluorescent material and the dial on time scales of scale so that at night you can easily read the time.
Kind
Traditional fluorescent coating material can be divided into self-luminous type and Luminescent two kinds. Since the light-emitting fluorescent agents are mostly carried by its own micro-release of radioactive material-ray excited light-emitting fluorescent agents. The Chu-ray fluorescent agent is basically do not contain radioactive material, but need to absorb and reserve in advance of adequate strength of the external illumination, will be its own electronic transitions from the low-energy level to a high energy level and stores it. When the surrounding environment, when the dark, self-absorption and gradually slow-release energy, this time from the high energy level to the low-energy electron-level transitions, fluorescent agents began to light. As the Luminescent-based ray excited do not carry their own material, so afterglow durability than the temporary self-luminous type.
