In our modern society, many things have experienced great changes gradually. Take the travel as the example, in the past, the concept of travel is to enjoy the beautiful scenery and relax ourselves after a period of hard working. However, in recent, we may find that more and more people would like to choose some risky ones, such as exploration, camping and so on. All of them are full of dangers and risks. People need to go to primeval forest to realize this kind of travel. In this process, they need a light, such as flashlight, electric torch and something like that. But today, I want to introduce a kind of best light which is quite suitable for the exploration and camping. Its name is laser pointer, which plays a vital role during the forest, especially in the night.
Now, let us see some detailed information about laser pointer. Its function comes first. Its main function is lighting. In the night of forest, it can send out a beam of bright light and can let you know what is around you. As we all know, there are dangerous animals, such as snake, tiger or something like that. This kind of laser pointer may save your life at some moment, because it has a strong power and can send the light to the distant place.
Then, I want to introduce three types of this kind of laser pointer. The first one is red laser pointer. Its wavelength is between 650nm to 660nm and it is the earliest version and the cheapest one. Meanwhile, it belongs to semiconductor laser. Then, the green laser pointer. Its wavelength is 532nm and belongs to solid state laser. In addition, it has a very high visual degree. The last one is bluish violet laser pointer, whose wavelength is 405nm. It is close to ultraviolet light and can arouse fluorescence. Meanwhile, it has the function of checking bank note and belongs to semiconductor laser.
The three types that I have mentioned have their own characteristics and advantages. You can choose one from them. But I personally think you had better choose the green laser pointer, which has a much stronger light and more reasonable price. If you want to travel in some dangerous places, you need a green laser pointer most. But just because of its strong light, you should keep your eyes staying away with it, or it will damage your eyes.
Do you want to explore or go camping? If you do, please do not forget a laser pointer.
Showing posts with label laser pen pointer. Show all posts
Showing posts with label laser pen pointer. Show all posts
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.
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.
A Good Present for Teachers
When people are thinking about their precious time in school, much fond memory will appear in their mind, including the friendship between classmates, the unforgettable experience of studying and the kind and knowledgeable teachers. As a matter of fact, many people will owe their present success and achievements to their teachers, who have taught them much knowledge as well as the principle to conduct themselves, and people will also think of the busy and tired form of their teachers.
Since in the class, in order to give the students a clearer explanation of the knowledge and relevant questions, teachers will use their arms to point to something important and pivotal on the blackboard or the projection, however, it is really inconvenient for them. Seeing that teachers are making every effort to pass on their knowledge to the students, the students should feel very appreciative, and one way to present the kind of appreciation is that they can send their dearest teachers a green laser pointer, which is a high-tech pointer that has been particularly designed for teachers.
A laser pointer pen is a tool with laser as a directing signal, and since it can send a laser that can be seen in a long distance, it can be used to replace a teacher's pointer. As a matter of fact, a laser pointer pen is mainly used in daily work and teaching because of its delicate appearance, light weight, simplicity in operation and convenience to carry.
Green laser pointer is the most popular laser pointer pen in the world, because green light is six times brighter than red light and its price is much lower than that of the blue and yellow ones. Green laser pointer is mainly used in teaching and it is a modernized teaching tool. Since the green laser pointer can send out a continuous beam of light wherever its holder goes, it will bring teachers much convenience. With a green laser pointer in hand, the teachers can be freed on the platform and the ideal condition of "teaching while walking freely in the classroom" can be realized.
When Teachers' day comes, many people will think of sending some present to the teachers that have taught them much knowledge and given them some inspiration in life, and at this time, a green laser pointer will be a good choice, because it can bring them much convenience and help them become less tried in the classroom.
Since in the class, in order to give the students a clearer explanation of the knowledge and relevant questions, teachers will use their arms to point to something important and pivotal on the blackboard or the projection, however, it is really inconvenient for them. Seeing that teachers are making every effort to pass on their knowledge to the students, the students should feel very appreciative, and one way to present the kind of appreciation is that they can send their dearest teachers a green laser pointer, which is a high-tech pointer that has been particularly designed for teachers.
A laser pointer pen is a tool with laser as a directing signal, and since it can send a laser that can be seen in a long distance, it can be used to replace a teacher's pointer. As a matter of fact, a laser pointer pen is mainly used in daily work and teaching because of its delicate appearance, light weight, simplicity in operation and convenience to carry.
Green laser pointer is the most popular laser pointer pen in the world, because green light is six times brighter than red light and its price is much lower than that of the blue and yellow ones. Green laser pointer is mainly used in teaching and it is a modernized teaching tool. Since the green laser pointer can send out a continuous beam of light wherever its holder goes, it will bring teachers much convenience. With a green laser pointer in hand, the teachers can be freed on the platform and the ideal condition of "teaching while walking freely in the classroom" can be realized.
When Teachers' day comes, many people will think of sending some present to the teachers that have taught them much knowledge and given them some inspiration in life, and at this time, a green laser pointer will be a good choice, because it can bring them much convenience and help them become less tried in the classroom.
A Good Helper - Laser Pointer
Do you have even heard about laser pointer or laser pointer pen? You must know about them if you know the history of eBay. This e-shop which was established in 1995 has 16 billion users now and it becomes as the best auction website in the whole world. People can buy everything from it except for the prohibited products. The birth of eBay can be attributed to Pierre Palma's fiancée. Because she was worried that she can not collect gadgets after they moved to Silicon Valley. So Pierre Palma established a big auction website to hope that all people can buy everything they want without going out. And the first product which was sold by this website is the laser pointer. Certainly, the laser pointer can be used by many ways today.
Nobody can resist the laser pointer is a good helper for doctor teaching. As we all know, when a professional doctor explains the sample lesions for his students, he can not point the specific parts by hands. Or the dangerous germs will invade into body and cause serious disease. But if he does not point out them, the students can not understand the difficult knowledge. Thus, a laser pointer can help him easily. The clear and straight laser light can find out the specific parts without any risk.
The laser pointers can be divided as three kinds according to different colors. The red laser pointer uses wavelength of 650nm-660nm. It is a kind of laser which is used in DVD disc. This kind of laser pointer is the earliest and most popular and its price is usually cheap at the same time. While the laser light of green laser pointer is always used in blue-ray disc and the feature of this solid laser light is high visibility. The last one is the blue-purple laser pointer, which is widely used to detecting money.
The biggest difference between laser pointer and laser pointer pen is the shape actually. But more teachers, trainers or lecturer intend to choose the laser pointer pen which can help them to demonstrate their lesson and project. Besides, the multimedia is very popular in classroom, so some later pointer pen can be also used as remote control. Teachers can control the computer or projector easily according to course schedule.
But you should use it for a long time, because some powerful laser pointer will have heat effect to hurt others.
Nobody can resist the laser pointer is a good helper for doctor teaching. As we all know, when a professional doctor explains the sample lesions for his students, he can not point the specific parts by hands. Or the dangerous germs will invade into body and cause serious disease. But if he does not point out them, the students can not understand the difficult knowledge. Thus, a laser pointer can help him easily. The clear and straight laser light can find out the specific parts without any risk.
The laser pointers can be divided as three kinds according to different colors. The red laser pointer uses wavelength of 650nm-660nm. It is a kind of laser which is used in DVD disc. This kind of laser pointer is the earliest and most popular and its price is usually cheap at the same time. While the laser light of green laser pointer is always used in blue-ray disc and the feature of this solid laser light is high visibility. The last one is the blue-purple laser pointer, which is widely used to detecting money.
The biggest difference between laser pointer and laser pointer pen is the shape actually. But more teachers, trainers or lecturer intend to choose the laser pointer pen which can help them to demonstrate their lesson and project. Besides, the multimedia is very popular in classroom, so some later pointer pen can be also used as remote control. Teachers can control the computer or projector easily according to course schedule.
But you should use it for a long time, because some powerful laser pointer will have heat effect to hurt others.
A Good Helper for Clinical Teaching
All friends who learn medicine know that the expert could not touch the sample with hands when he is illustrating a pathological sample, and in this way students could not know where he or she explains. In fact, he or she could point the places to people who are listening to his or her lessons smoothly if he or she has a laser pointer pen.
Laser pointer pen is a good helper for clinical teaching, and it could make users to play their body languages to the biggest extent while they are teaching clinical knowledge by means of visual laser in low power, making the teaching and speeches more active and perfect. In this way, laser pointer pen could solve many inconveniences in clinical teaching, and then all people who are listening to lessons could understand better.
Laser pointer pen has several functions, and it has magnifying function in order to attract visual attention to important contents and to improve learning effects. Laser pointer pen also has wireless remote control function, and the expert or teacher could control the computer wherever he or she is at the classroom, and he or she could adjust the contents according to the process of the lesson at any time at any places.
Laser pen pointer could be divided into red laser pointer, green laser pointer and blue and purple laser pointer. Red laser pointer has red light which has 650nm to 660nm wave length, and it is a kind of laser used on DVD disks, and it is the earliest and the most popular laser pointer pen, and it is also the cheapest on the price and belongs to semiconductor laser. Green laser pointer has green light which has 532nm wave length, and it belongs to solid laser, and it is widely used in stars pen because of its high visibility. Blue and purple laser pointer has blue and purple light which has 405nm wave length, and it is used on blue disks and gets close to UV-light, and it could stimulate fluorescence and could be used to check whether money is true or false.
At present, green laser pointer pens get more and more popular in teaching, and experts or teachers could make their classes more active with the help of laser pointer pens. In this way, students could also understand better and learn much more from their experts and teachers.
Laser pointer pen is not only a good helper for clinical teaching but also is a good helper for all teachers.
Laser pointer pen is a good helper for clinical teaching, and it could make users to play their body languages to the biggest extent while they are teaching clinical knowledge by means of visual laser in low power, making the teaching and speeches more active and perfect. In this way, laser pointer pen could solve many inconveniences in clinical teaching, and then all people who are listening to lessons could understand better.
Laser pointer pen has several functions, and it has magnifying function in order to attract visual attention to important contents and to improve learning effects. Laser pointer pen also has wireless remote control function, and the expert or teacher could control the computer wherever he or she is at the classroom, and he or she could adjust the contents according to the process of the lesson at any time at any places.
Laser pen pointer could be divided into red laser pointer, green laser pointer and blue and purple laser pointer. Red laser pointer has red light which has 650nm to 660nm wave length, and it is a kind of laser used on DVD disks, and it is the earliest and the most popular laser pointer pen, and it is also the cheapest on the price and belongs to semiconductor laser. Green laser pointer has green light which has 532nm wave length, and it belongs to solid laser, and it is widely used in stars pen because of its high visibility. Blue and purple laser pointer has blue and purple light which has 405nm wave length, and it is used on blue disks and gets close to UV-light, and it could stimulate fluorescence and could be used to check whether money is true or false.
At present, green laser pointer pens get more and more popular in teaching, and experts or teachers could make their classes more active with the help of laser pointer pens. In this way, students could also understand better and learn much more from their experts and teachers.
Laser pointer pen is not only a good helper for clinical teaching but also is a good helper for all teachers.
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