500mw or more ignitable laser pointer

Laser pointers above 500mw can ignite flammable items such as matches, cigarettes, rubber, and plastic bags. As the power increases, you can use it to trigger a firework fuse at a distance, which is safer if you want to do it manually. . Others emit radiation invisible to the naked eye, such as ultraviolet or infrared radiation. Generally speaking, laser radiation itself is harmless and behaves much like ordinary light in its interaction with the body. In theory, laser projectors using high power laser pointer light sources can have a much larger color space than traditional light sources, and the color performance is also higher than traditional projector light sources. Light with shorter wavelengths is composed of higher-energy photons, which provide the energy needed to release electrons. Now you ask, "What does this idea of ​​quantum energy have to do with lasers?". Well, with this funding, we'll move on. An electron is released from a metal surface, and it needs a photon with enough energy to overcome the energy that binds it to the atom. This contains significantly more green areas, so our visual organs are more sensitive to green, which is why green grass standing on a viewing platform is more eye-catching than brown-blue water in the same setting.