Laser pointer how it works in universal

At present, the technology of laser pen is applied in many fields, including nuclear spin photography, medical and photometric detection, laser detection and measurement, laser simulation, laser positioning, laser and manual technology. Electromagnetic technology should not be widely used in mechanical or mechanical stress coupling laser processing and manufacturing industry, with low efficiency, impact on the environment, high precision and low heat.When you point the green laser pen to the sky at night, you can see a bright green light piercing the night sky. Astronomers can use it to point to the stars.It is a product with a wide range of uses: teaching and scientific research institutions are used as teaching, academic reports, conferences and other occasions with video equipment as instructions; Military units are used to cooperate with the instructions of large screen command system; Tourist units are used for tour guides to explain; Instructions used by the construction and decoration supervision unit for construction and decoration acceptance, etc. In some cases, it can also be fixed as an orientation tool; It can also be used as a gift.