Is it feasible to use phone as laser pointer?
The cheapest low-power green laser pointer are generally not suitable for astronomy. The light emitted by these lasers is too weak and can easily be hidden by surrounding LGT, smoke and fog laser pointers for astronomical observations. High electric power The beam of the laser pointer will appear at night under the worst conditions. At the same time, the high-power model is used, which can be seen throughout the day, even very quickly. Ideal for dawn and dusk astronomy. The green wavelength of 532nm is visible to the human eye, and the green laser pointer is very suitable for astronomy, exploration, and help. The beam of this green laser pointer is brighter than that of the red laser pointer. On a special night, its beam is eight times that of a red laser pointer, which is easy for human eyes to understand.
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By the way, the laser used for processing in the factory is about 30 to 50W. There is also a blast furnace of about one kilowatt. Is the downed missile megawatt? If you have played with the super laser pointer, you will know that the laser can reach a considerable distance. 100m and 200m are natural, and it seems to be able to withstand about 1km. Hit on the face can cause severe burns. If it enters the eyes, it will cause blindness. If it hits the window from the outside, it will penetrate the glass and hit the curtain to catch fire. It can be said to be a very dangerous weapon.
2021-11-26 11:56:59
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