Funny laser Pointer Funny laser pointer

Unlike the green laser, this 650nm red laser pointer is sufficient for formal demonstrations in schools, star research and astronomy. It is reported that the low-power red laser does not need to wear laser protective glasses. In addition, no matter what type of green laser pointer you point at, don't try to look at moving vehicles, airplanes, or airplanes. There will be a huge sharp laser beam, temporarily dazzling. Whenever people point to a pen laser device, don't drop it into the wrong hands or abuse it. When performing laser spot alignment on various working surfaces, the laser spot will be provided in the most compact size. Therefore, before the laser alignment tool, the design is compact and the focal length is adjustable. Before the user gets a relatively compact laser spot, the user must tighten the head screw of the laser module to accurately reach the high-density green reference point. In recent years, the 593.5nm orange-yellow laser pointer has begun to appear. September 2005 473nm blue laser pointer. In early 2010, a blue-violet laser pointer with a wavelength of 405nm.
The apparent brightness of the laser spot depends not only on the laser power and reflectivity, but also on human color vision. For example, because the human eye is most sensitive to green light with a wavelength of 520-570 nm in the visible spectrum, and its sensitivity to red or blue wavelengths is reduced, green light of the same wattage looks brighter than other colors.