How to determine the price of the laser pointer?
For astronomy enthusiasts, should the power and price of star springs be determined to be related to the requirements of the star to strike them? I personally think that the power of 20mW to 50mW is more appropriate, and the power of 50mW or more can feel particularly unassuming in dim indoor conditions. The main prize of the green high powered laser pointer is related to its bandwidth and stability. The narrower the bandwidth, the more expensive it is, but the human eye cannot distinguish it. At this time, the bandwidth is less than 50mW, and the price of the laser pointer is 100 yuan lower. In addition. , The laser pointer usually consumes a lot of power, in line with the principle of environmental protection and saving money, it is also necessary to bring a good pair of batteries. But even so, if you want to burn fabric, wood, plastic, etc., the more popular 200mW power laser must be continuously irradiated in the same place for at least a few seconds again, encountering the same white or colored laser material. . So there is no meaning to hurt people.
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Laser pointers are commonly used for educational and commercial presentations and visual presentations, as an eye-catching pointing device. The green laser pointer can be used in almost any indoor or low-light area, where it may be inconvenient to point out details by hand, such as during construction work or interior decoration. The green laser pointer can be used for similar purposes, and it can also be used outdoors during the day or at a distance. A commercial blue laser pointer with an intensity of up to 5 milliwatts can in principle also reach an Airbus at an altitude of 15,000 meters. "Frank Jacobs, an ophthalmologist at the Luftwaffe Aerospace Medical Center, reports, "Don't move so fast," Jacobs Si said that he advises NATO on the issue of glare attacks. Whether a blue laser pointer attack causes organic damage to the eyes depends mainly on the intensity of the laser.
2021-12-24 09:11:01
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