How to Use Laser Pointers Safely?

   Laser pointers can be extraordinarily useful, for everything from illustrating lectures to pointing out constellations. They are, however, still lasers, and any laser should be handled with care. Read on to learn how to use laser pointers safely.

   Things you will need.

   1.Switch the pen on. The switch is often a push-switch, sometimes located at the opposite end from the lens. Some switches are momentary, so you can switch the pen on only when you are pointing at something, and automatically switch off when not depressed.

   2.Point the laser dot at whatever you wish to indicate. If you are at a meeting, point the laser at an item on a projected list, at a location on a map or at an item on a whiteboard.

   3.Move the laser dot in a circle for emphasis. Simply flick your wrist in a circular motion. It will look to the audience like you are drawing a circle around whatever it is you are pointing at.

   4.Move the laser dot in a linear motion to indicate a path. For example, trace a river, road or route on a map.

   5. Please keep the laser pointer away from children. Moreover, only allow adults to use laser pointer after they have understood the responsibilities and risks that it carries.

   6.Don't allow the laser beam to enter the eye. The laser beam is harmful to eyes; any contact will cause permanent damage. Not the laser pointer to the crowd, especially in the face.

   7. Always be conscious of where you're pointing. Avoid pointing a laser at any reflective surfaces. Unintentionally reflected beams can easily violate Step 6

   8. Never use your laser pointer in the vicinity of airports, highways, construction sites or anywhere individuals need to constantly pay attention to their work for their own safety.A split-second distraction--a sudden laser light in a plane cockpit, for example--can be disastrous.

   9.Be especially cautious around high-powered lasers, like green laser pointers used for stargazing. They are far stronger than the red pointers commonly used during lectures. And do not purchase a laser pointer at all if it does not identify its class or power.