subject: Lasers Pointer [print this page] Lasers Pointer Lasers Pointer
The lasers pointer is a device which is designed to emphasize an object by throwing a minute but incredibly bright light at it. The laser pointer is a small device which can be used for numerous purposes. These pointers come in different colors and power, which is measured in watts. The width of the laser's beam is small enough to point towards an object without harming the path of light. This means that in a clear environment, the beam targets itself on an opaque surface. From a medical point of view, doctors claim any lasers pointer which is under 5 milliwatts (mW) to be harmless. They can be used without the danger of affecting any living object in their vicinity.
Types of Lasers Pointer
There are certain types of lasers pointer which are available in the market. Each has its own specialty which can vary on the kind of the laser and the features it serves. The pointers are divided according to their watt or color style. The lowest and earliest pointers were of 1 milliwatt and were made of helium-neon. The other kinds of lasers pointer is separated by the color of the laser which varies between red-orange to green, violet and blue. The lasers are also divided between those that are hand-held and those which are used for larger purposes.
Uses of Lasers Pointer
There are several ways that lasers pointer can be used. One of the rudimentary essentials are using these lasers as a source of attraction to the audience. Thus, the most basic ones are business presentations or any kind of displays which require light. These pointers are also useful for areas with little light and those that require construction. Interior decorators also make great use of the lasers pointer as do those interested in astronomy.
Cons of Lasers Pointer
The lasers pointer is considered an exceptionally strong device. These lasers can burn holes in different kinds of objects be it paper, light matches or balloons. However, these lasers pointer are dangerous to the human eye. Their incredibly strong light can affect the eyes and cause blindness. While the laser beam itself might be small and minute, its power is strong enough to cause a severe accident because of its affect on the physical proponents of a human being. Thus, the lasers pointer are useful on those objects that can be destroyed are coupled with their affects on the users and those surrounding them
