When the sunset fades away the last light, when the night falls and the lights begin to shine, I suddenly find that the city at night is so beautiful. Compared with the day, it seems that it has a gentle and romantic charm. As a finishing touch, of course, it's light. All kinds of colorful light and reflective cloth are used more and more.
Fluorescence is a kind of special light. Its characteristic is that it does not emit light by itself, but is a kind of cold luminescence phenomenon of photoluminescence. Students who are not good at physics may not understand well. Here we just need to remember that fluorescence is a phenomenon that is illuminated by light, so as to give off light. In daily life, we usually call all kinds of weak light as fluorescence in a broad sense, without carefully investigating and distinguishing its luminous principle.
Reflection is also known as reflection light. People can see everything in the world. In fact, the light reflected by the object is focused on the retina. The importance of reflection can be seen. Different colors, different materials and reflected light are different. White objects reflect almost all the light of the light source, with less reflective and strong exposure. Black objects absorb almost all the light of the light source, without reflection, with more exposure. According to the nature and depth of color, other objects have strong or weak reflective texture. Here we have to mention reflective materials. With the development of science and research, the reflective effect of reflective materials is getting better and better.
The reflective strip on the reflective vest is to use the principle of light regression reflection to produce reflective effect. There are energy problems and light pollution problems in the luminescence, while the fluorescence is too weak to be controlled. Only the reflection, with the help of reflective materials, can faithfully and effectively reflect the light back, effectively ensuring the safety of traffic police and operators at night. A little reflective strip can be said to play a very important role.
