A lot of people used it to glowFluorescent barAnd bend it around in your hand and shine in the dark of night. What the hell is that
The fluorescent stickShining principlesLike other sources of light, it is also a source of light that releases photons when individual atoms are activated. But unlike a light bulb, a light bulb uses heat to stimulate atoms, while a fluorescent rod glows with the chemicals inside itChemical reactionsAbout。
What's the chemical in the fluorescent rod and what's the reaction
There are three main types of chemicals in fluorescent rods: peroxides, ester compounds and fluorescent dyes. It is the presence of these substances that provides the basis for fluorescent rods to glow. The fluorescent rod glows on the basis that peroxides and ester compounds react chemically, and the energy released in this reaction is passed to fluorescent. In light dye molecules, the fluorescent rod that we see is the fluorescent dye that releases energy in visible light (from high energy to more stable low energy), where chemistry can be converted to light。
The fluorescent rods that we see are a rod containing two liquid compounds, ester compounds - phenylpropylate and fluorescent dye - dye solution. Before it was activated, the two solutions were installed in two separate tubes. In the middle of them is a small glass bottle containing hydrogen peroxide solution known as the “activator”。
How do you activate the fluorescent rod to make it glow? We bend it all the time, and the fluorescent rod lights up. What's in it
The outermost layer of the fluorescent rod is a plastic tube with peroxide in the glass tube. When the fluorescent rod bends, the glass pipe inside is broken, the two solutions are mixed, the chemical material meets, and the energy released during the chemical reaction is transmitted to the fluorescent dye, where the fluorescent rod begins to glow。
The whole reaction process of lighting is as follows:
Hydrogen peroxide oxidizes benzene herbate to form a compound called phenol and unstable peroxyate。
2. Peroxylate is dissolved to form more phenols and cyclic peroxide compounds。
Cyclical peroxic compounds are dissolved to form carbon dioxide。
Decomposition releases energy to dye。
The electron leap in dye atoms moves to a higher energy level and then falls back to its original position, releasing energy in the form of light。
In addition, the fluorescent rods that we see are very colourful, and these different colours of light, because the fluorescent dyes are different, so we can see that they are colorful。
Depending on the compounds used in the fluorescent rods, the chemical luminescences vary in duration, ranging from minutes to hours. If its solution is heated, the fluorescent rod will give rise to greater light, but for a short period of time. If you want the fluorescent rod to darken, you just have to cool it。
Is fluorescent rods harmful to humans
The fluorescent rods are mainly plastic packaging, and the chemical liquids in the fluorescent rods are surrounded by plastic, do not come into direct contact with the human body and therefore do not cause harm to the human body. And the light from the fluorescent rod is not the light from the dyes that is triggered by radiation, but the non-radiation light from the dyes that is triggered by chemical reactions and does not harm the human body。
But today, some people are trying to catch up with fashion by breaking their fluorescent rods and coating liquids on the skin surface, which can cause some damage to the human body, which could be even greater in the case of more vulnerable children. So it's safer to have it all in your hand。
