A laser pointer that makes good use of in life

When the working temperature of the laser pointer is much lower than expected, it is important to preheat the laser tube. Especially the head of the laser pointer should be warmed up on the jacket or hand. If the green laser pointer is activated in an indoor working environment, it will return to a formal or nearly formal working environment. They can be used as pointing devices. The ability to form a continuous line in the dark is an additional advantage; this has led to its use as a rescue light because it can be seen from miles away. It is used for laser shows. It is also used for sky gaze, because people can use green lasers to pinpoint stars.