Laser Pointer 

This color is not perceivable by the human eye.
Visible spectrum of the laser pen.When there is a lot of smoke in a room, such as at parties, the beam will be visible. Visibility of the laser pen so among other things depends on the environment in which the High power green laser pointers  beam is projected. In addition, there are colors, lasers that are more visible than other colors. This will be explained on the basis of the colors of the visible spectrum. As such, the laser pointer 5mW is not great, but the energy is high (due to the range is very small, just a point usually) collected a short time a lot of energy can be used to understand as weapons. Stimulated emission, which means & quot; & Quot ;? Stimulated emission is based on the great scientist Albert Einstein at the base in 1916 a proposal for a new series of theories. 2.4 technology laser 20000mw advantages anti-interference, transmission rate, transmission distance, and so on.The theory is that the atoms in the composition of the material, there are different numbers of particles (electrons) in the various energy levels in high level of particle becomes generated by a photon of a high energy level (transition) to a low level, then it will emit the light and excitation light of the same nature, and, in certain circumstances, it may green laser pointers the formation of a low-light brilliance of a phenomenon.