Many people like to play with laser pointers very much. What are the hazards of laser pointer? Laser pointers are relatively common in life and have a wide range of uses. They do not actually have writing functions. They only have a similar shape to a pen and emit a strong infrared light source when working. They can be used for teaching, company meetings, and other purposes.
Since the appearance of the laser pointer is relatively fashionable and it can emit a focused light source, it is very popular among primary and middle school students. What are the hazards of the laser pointer? The specific problem is related to the actual power of the laser pointer. The greater the power of the laser pointer, the damage to the body Bigger.
1. The laser pointer emits directional light, and the energy is extremely high. When the laser light emitted by the high-power laser pointer directly enters the human eye and reaches the sensitive part of the human retina, it will cause direct damage to the eye, and even burn the retina. Therefore, you must never use a high-power laser beam to illuminate the face or eyes of others, and you must not use mirrors or other objects to reflect the laser.
2. The energy density of the laser pointer is extremely large. If you use a high-power laser pointer to shoot the human skin directly, it will cause burns to the skin. Little damage.
3. If you look at the beam of the high-power green laser pointer for a long time, you will have symptoms such as dizziness, vertigo and even nausea, which will not only affect your eyes, but also seriously affect the optic nerve and central nervous system, which is not a small harm.
4. If you use a high-power laser pointer to focus its light and directly irradiate flammable and explosive objects, such as gasoline, matches, firecrackers, etc., it will ignite in a short time, sometimes only a dozen seconds, which is extremely easy Cause a fire or explosion, which will cause greater damage to your body or property.
You must learn more about campus safety, and it is best not to buy toy laser pointers outside of school. Although it looks fun, it is actually very harmful. How harmful is the toy laser pointer? If it is directly exposed to the skin or eyes for a long time, it is easy to cause permanent damage.