Monday, May 23, 2011

A Green Laser Pointer Let You Roam in the Star Sea

At the very beginning, I want to ask you a question: have you ever counted the stars in the night? I am sure many people have this experience when they are in their childhood. The starry sky in the night is so beautiful that many people are lost in it. Sometimes, you would like to count them with your lovers, children or parents. Then, what kind of tool that you will choose to count the stars? Your fingers, right? Maybe, just fingers can not distinguish the stars easily. At this moment, you need a pointer. Today, what I want to introduce to you is a kind of green laser pointer, which will let you roam in the star sea in the romantic night.


Now, let us see the brief introduction of the green laser pointer. The main difference of the green laser pointer and red laser pointer is its output light degree is much stronger. In the night, if you use the green pointer pen to pint the sky, you will see a snake of green light beam straight gearing in the starry sky. This outstanding characteristic can let you find out the star that you want to see.


Then, how to choose the power of the green laser pointer is another question. 20nw to 50nw will be fine. If the power is more than 50nw, you will fell the light is so strong that you almost can not open your eyes. In other words, it will be dangerous to your eyes and some other frail parts in your body. The price is another issue that you should pay attention to. Generally speaking, the price is related to the bandwidth and stability. The narrower of the bandwidth, the higher the price. If you just want to use this kind of green laser pointer to enjoy the charming stars, I personally think you had better choose lower power and price one, which will not affect the view effect. In the meantime, the power consumption of green laser pointer is comparatively larger, you need to prepare two rechargeable batteries.


In addition, you may encounter this problem: the green laser pointer can not work in the night even if it works normally in the day. It is because the medium of laser is semiconductor, which is quite sensitive to the temperature. It will not work well in the low temperature. If you come across this problem, what you should do is to hold it by your hands tightly.


Until now, do you have a deeper understanding about green laser pointer? I personally think you need to own one if you love the beautiful starry sky in the romantic night.

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