My mother brought me a baby from abroad-a laser pointer! Every night, I like to place the laser pointer on the opposite garden for a series of sweeps: the small red reflections fly freely among the tall buildings, and the night is particularly clear and bright. When the player touches the opponent’s sensor with a green laser pointer, they will score points. The principle of shooting detection is managed by the computer responsible for counting points. The player who was hit lost points and saw his weapons and sensors turned off for a few seconds. This is the time for him to stay away from the opponent and think about the game strategy. At the end of the game, the player with the highest score declares the winner. Tonight I am holding a small baby laser pointer, which I borrowed from a classmate. The red dots on this small laser pen move forward and "lift" step by step. What I didn't expect was that when the laser pointer hit the garden, it was almost half the size of a watermelon, and the light became very blurry. And far away, he will not be able to shine.
The 200mW green laser used by scientists or lecturers is one of the most popular lasers. This object can be found on the Internet and is for strictly professional use only. It is usually used in astronomy. Even if safety instructions appear on these devices, some people abuse it. The red laser pointer is relatively easy to make, with a wavelength of about 600 nanometers, mature technology and mature semiconductor processing equipment. Baby’s green high powered laser has a wavelength of about 530nm. This is a green laser pointer with high price and low power because the band semiconductor laser technology is not very mature yet.
Finally, try not to wear jewelry or reflective materials when using lasers. Compared with the eyes, the skin is usually less sensitive to laser rays. The effect of laser rays on the skin is very dependent on the intensity of the radiation. In the case of strong intensity, it will not only cause damage to the epidermis, but also damage to the dermis. They can cause burns, severe blisters and subsequent scars.