some irresponsible people getting their hands on them

 The huge amount of lasers available has lead to some irresponsible people getting their hands on

them, such as the general public, and people have been shining there beautiful green lasers at airplanes and causing much havoc. So when lasers

first started to get popular several years ago, new laws were put in place that regulated the power of lasers pointers that could be bought or

sold in the United States.
Are you curious about the working principal of the cell phone jamming device and want to see a true instance? Just come here and you can gain the

chance to know more. Firstly, you can see that the working principal of the cell phone scramblers is to cut off the signals of the mobile phone

signals and preventing letting from sending and receiving mobile phone messages and calls. And it will not affect other usages of the cell phones

such as listen to music and watch the video on the mobile phone.And this is just about the jamming frequency bands and as the jamming distance of

such a good cell phone jamming device can reach up to 20 meters depending on the signal strength in the given area with a total output power of

2W. The laser diodes and the lens are the keys in making this possible. Each color in the electromagnetic light spectrum has its own frequency

thus achieving a color of light means producing the right frequency. Inside the shell of the laser pointer you will find crystal diodes connected

to an energy source with a certain power output. Once triggered by the power, the light will pass through the lenses and the lights that are

needed are eliminated. Therefore, the light that you desire will come out of the shell and appear as a colored laser beam. A green laser pointer

light has a 532 nanometer frequency which means that the green light becomes visible by aligning the crystal diodes for the light to pass through

the lenses.