Do Highlighters Really Shine At Night?

Highlighter is a very popular marker for marking now. It uses fluorescent, lighter ink to cover key parts to make marks. After making a mark, it will not block the text and make your notes clear immediately. It is a common stationery in life. Because it has many colors and is easy to use, people often take it with them or put it on the desktop, but many people have questions about whether it will glow when using a highlighter.

Highlighters do fluoresce. The highlighter has a fluorescent agent, which produces a fluorescent effect when it encounters ultraviolet rays (sunlight, fluorescent lamps, mercury lamps are more), and emits white light, which makes the color look dazzling and fluorescent.

However, the fluorescence of highlighters is different from that of our watches and glow sticks. The glow sticks undergo a radioactive reaction inside, and the generated rays excite the peripheral phosphors to emit light, so they can glow without any ultraviolet rays at night. The highlighter will fluoresce only when there is ultraviolet light. You can see it very clearly if the handwriting of the highlighter is close to the mosquito lamp (black light) and the money detector.

It should be noted that the highlighter is not a radioactive material, and the highlighter is just a watercolor pen that is greedy for fluorescent powder. The main function is that the written words will be brighter and more eye-catching under the illumination of weak light sources, and the written words themselves will not emit light. No radioactive materials are added, so there is no radioactive contamination. However, most of the phosphors themselves are toxic, and they are harmful if swallowed by mistake.