Black Friday's Laser Pointer
Mainly used for referrals by teachers, conferences, hazardous industrial zones, astronomy enthusiasts and tour guides. It is very convenient to use the green laser pointer power to point to inaccessible places. As many mountaineers and rescue teams know, lasers are an excellent tool for self-rescue and rescue. The laser has a long and bright range. Use laser irradiation to mark the same position. In this way, rescue information can be provided more effectively. You can also play with your pet. Laser Pointers are the best toys, especially for cat owners. You can exercise your cat effectively.
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Instrument
Ordinary light, such as sunlight and light, is made up of photons that have the properties of particles and electromagnetic waves. Common light sources (such as lamps) emit light in all directions and decay as they travel, illuminating only a certain distance. Lasers, on the other hand, are a kind of bright light emitted by electrons excited by photons, which has strong directionality. For example, if you use a flashlight and a high powered laser pointer to illuminate distant objects at night, it's clear that the flashlight's light is only 10 meters or more away, while the laser is hundreds of meters away. The difference between the two is a few numbers.
2021-12-15 11:08:36
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