The most popular blue laser pointer
There are five types of blue laser pointers: "point type, round type, stick type, finger type, and arrow type", which can be switched according to the situation. In addition, at night, you can see the blue light from your hand to the sky, so you can use it for outdoor activities such as constellation interpretation and emergency lights. Excellent heat dissipation design, stable and high-power output, high-output Laser pointer pen type, easy to carry, used as an LED light, most suitable for lighting.
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It is best not to test his danger in his eyes! These pointers are very powerful green lasers that can cause irreversible damage. On the other hand, they are very practical and can show another person a constellation or other messenger objects. You just need to always point it to the sky when using it to avoid accidents. The laser is uniform, monochromatic, and directional, but the spectral density of the laser is much higher, precisely because it is monochromatic: all energy is concentrated on one wavelength, unlike the total light power emitted by a torch, which may be the same. But distribute its wavelength among all the energy. Therefore, if we refer to the concept of energy per unit wavelength, the laser will be more intense.
2021-10-12 11:35:18
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