The raven's natural enemy is the laser pointer

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Quick bird location sharing in a dark rainforest? Or help other birders look in the right direction and catch birds faster?

Quick bird location sharing in a dark rainforest? Or help other birders look in the right direction and catch birds faster? Which output is best when using a green laser pointer for this task is bright and safe for the user and wildlife, but if the crow is aimed too close, it will "scare" the crow, won't it? Can laser Pointers be moisture-resistant and water-resistant to the wet conditions of South America, Africa or Asia? Long battery life?

There are high powered laser on the market now, but do you know what the diameter would be if you lit up two or five kilometers away? For commercial use, we would probably use about 100mW, but we would need to adjust the focus of the laser beam to use it. Unmarked laser Pointers can emit too many laser beams, causing damage to eyes and skin.

How to choose different color laser Pointers

Laser Pointers, which use a blue laser pointer beam to point to places that can't be reached by hand or pointer, are useful for meetings and presentations. The difference between green and red is the wavelength of light, which makes green easier to see. In addition, because the green light irradiation distance is longer than the red light, high visibility, suitable for large venues and large conference rooms for speech. Red light, on the other hand, is cheaper, so there is a wide range of products. Batteries are better than green lights because they are often recommended for lecturers. However, because the irradiation distance is not as large as green light, it is very suitable for small and medium-sized conference rooms and meeting Spaces.

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