Dr. Charles Townes was awarded the Nobel Prize about 50 years ago for his great contribution in the discovery and invention of the laser, which is so prevailingly utilized in the present world. In the realm of science, lasers are used in atmospheric remote sensing, investigating nonlinear optics phenomena, and many other technological applications. In the military avenue, laser can help in target designation and ranging, defensive countermeasures, and so forth. The coming into being of laser virtually adds color to our daily routine in more than one aspect. Even science fictions benefit from it for involving into the stories laser weapons.
When it comes to the field of medicine, the function of laser is even more overwhelming, since it not only facilitates the process of diagnosing and assists the surgeries, but also come as great help for professors in their teaching. It is known to all students who have ever experienced a medical class. The specimen is prohibited from touching, leaving it inconvenient for the professors to make appropriate explanation about the exact location of the pathological part. A laser pointer pen serves as an excellent solution towards this problem by pointing accurately to the point in accord with the professors' intention. And the quality of teaching can in turn get promoted due to the enhancement of the efficiency in course delivering.
The effectiveness of laser pointer pen makes it a widespread gadget in not only medical teaching process, but in other fields of study. In recent years, the appearance of green laser pointers struck the world even more tremendously. Green laser pointers are significantly brighter than a red laser pointer. According to a newly conducted survey, a green laser pointer can be more noticeable than a red one. Were the aforementioned fact cannot persuade you of the advantages of green laser pointers, there would be far more aspects in which the green laser pointer outweighs the obsolete red laser pointer. For one thing, the green laser pointer makes visible the actual beam, due to its particular wavelength that is much shorter than the 650 nm red laser wavelength.
In a word, thanks to the invention of the laser pointer pen, the teaching process becomes more effective and colorful than ever.
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