Laser pointers also play a big role in photography

Place the camera on a tripod or stand or other stable surface, set a long exposure, and then go crazy with a laser pointer. The camera uses all the light and creates some amazing effects. Since the laser pointer can illuminate without shooting you, you will create some crazy laser effects that will amaze your friends. Because of the strong laser focus, the laser pointer can produce a heating effect at the irradiated part, which satisfies the fresh mind of minors, and has been widely welcomed by primary and middle school students. Normally used laser pointers are generally divided into four levels, below level two (0.4 to 1 mW), as long as the irradiation time is not long, it will generally not cause harm to the eyes and skin of the human body; but the laser pointers above 3-5 mW Larger power can cause human damage. At present, due to lack of supervision, some laser pointers sold around campuses have a power of 100 to 300 milliwatts, which can instantly ignite matches, firecrackers, and paper, and even cause fires. In addition, primary and middle school students lack the necessary awareness of self-protection. When playing, a long time exposure can cause damage to the eye retina and skin surface, resulting in permanent damage and even blindness.