What if the highlighter ran out of water

1. Hold the head of the highlighter with scissors and pull it out. Dip some water in a brush or scissors, drop it into the highlighter, and put your head back on. I can use it for a little while longer.
2, you can also go to the grocery store to buy some phosphors, if you buy, add 60% pure water! Put it in the pen! I can write again.
3, you can also simply add tap water can also write for a while. Highlighters are often used for drawing and marking. When choosing, you can stack two pieces of translucent report paper or typing paper together, write a few words with a highlighter on the above paper, pay attention to the heavy and heavy, and then turn over to check, good quality highlighter on the back of the above paper should have no color penetration, and the following paper should have no handwriting.
Highlighter pen is a new marker pen in recent years with thicker, lighter ink to cover key parts to make marks, after making marks, blocked text at a glance. The most important role is: the documents that have been marked with highlighters, when copying, can not see that they have been marked!

Why do highlighters have this effect? The key principle of ultraviolet fluorescent ink is to add visible fluorination (complex) compounds with ultraviolet excitation to the ink. Through the absorbed light energy, the energy level of the atom transitions, and then releases the absorbed additional energy. The anti-counterfeiting feature is the visible light of red, yellow, green and blue (400nm ~ 800nm) emitted under ultraviolet light (200nm ~ 400nm). This ink has color and colorless, there are long wave (365nm) and short wave (254nm) two kinds. Fluorescent pigments are organic complexes, refined, high luminous rate, usually colorless or light white, in ultraviolet light (200nm ~ 400nm) irradiation, the square shows a variety of colors of visible light (400nm ~ 800nm). According to the wavelength of the excitation light source, it can be divided into short-wave ultraviolet excited fluorescent pigments (excitation wavelength of 254nm) and long wave ultraviolet excited pigments (excitation wavelength of 365nm).
Highlighter classification: 1. Highlighter is divided into: water-based and oily two. Water-based pens are similar to colored pens in that they are non-toxic, but they are not easy to dry. And the coverage is not good, the surface of some items can not be written up, and the two colors stacked together will appear dirty. Oil-based pen is a synthetic solvent that dissolves color with alcohol, and some sensitive people can smell it and get dizzy. But it is easy to write and easy to dry, the coverage is good, the price is cheaper. There may be a misunderstanding: that is, the highlighter will glow at night, I also think so at first, and I have specially done experiments, in the absence of light, the highlighter is not luminous. The principle of the highlighter is that through the absorbed light energy, the fluorescence agent is excited to produce the energy level transition of the atom, and then the absorbed energy is released. Fluorescent agent, encounter ultraviolet light (sunlight, fluorescent lamp, mercury lamp more) will produce fluorescence effect, emit white light, so that the color looks like a dazzling fluorescent feeling.