Devices made for laboratory and research usage are constantly being transformed to make them fit for commercial purposes. Some of these can help you with your daily activities. A laser pointer is one such device that falls in both categories. Read on to find out more about laser pointers .
What is it?
A laser pointer is small device which emits a laser beam with the help of an in-built diode ray tube. The laser emitted from the pointers can be of different colors depending on the nanometer wavelength. To date, the following colors are available in pointers: green, blue and red.
The significance of laser light is that it is much more brilliant that conventional light emitted by bulbs. Actually, one single milliwatt of laser light i.e. one-thousandth of a watt equals an 100-watt light bulb!
Uses
Different types of lasers have different uses. So, red lasers are often used in offices to point out on slide projections during presentations. They are also used in educational institutions by teachers to highlight graphs, charts etc.
Green lasers pointers are mostly involved in the field of science and research. They are used by astronomers to point out stars and constellations. Scientists also use them for sky-pointing, signaling and projection on low clouds.
Abuses
A laser pointer in the wrong hands can cause a lot of problems for others. Pranksters often like to flash the laser at folks to get attention all over the place: at schools, in theaters, malls, etc. You might be aware that athletes can be targets so as to trip them up (by non-fans, for example). More severe accidents have also happened when people driving cars have been targeted with lasers. These are some of the main reasons why laser pointers are banned in most schools, theatres and sporting arenas.
Safety
If you are using a laser pointer, be careful enough, not to point it at anybody’s eyes. Also try to keep it away from the reach of kids, who might cause accidents while having fun with laser pointers.
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