Use a laser pointer for hiking activities
The laser pointer is small in size and easy to carry. It can be put in a bag or pocket without taking up space. Due to the different wavelengths, there are mainly four colors on the market, they are purple blue, blue, green and red. It is recommended that you choose a green laser pointer when you are out hiking, because green is the most sensitive to the human eye and is 10 times brighter than other colors at the same output power.
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In addition, some Laser pointer sold online are classified in categories, but they are not suitable for compasses, punches, exhibits, etc. The reporter noticed that some laser pointers sold on the Internet are labeled "Class 1 Laser Product", which is a Class 1 laser product. Some indicate that the product belongs to category "3A" or "3B", and a few indicate "4B". ". The national standard documents recommend the use of 3A or higher level laser equipment, "suitable for laser safety officers", and where applicable, provide users with level 4 laser products with protective clothing and goggles. It can be seen that the laser pointer is far away. Beyond the scope of toys.
2021-10-12 11:33:36
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