Learn the difference between laser and natural light. Collect the compilation of relevant information by reading, understanding of the characteristics and applications of the laser. Through extra-curricular reading, the collection of information to sort out the relevant laser applications, and to cultivate the ability of processing information. Laser characteristics and application of learning, training of applied physics knowledge to solve practical problems. Through the study of laser applications, so that students feel the force of scientific knowledge, no study, to cultivate a love of science quality. The difference between laser and natural light and laser characteristics and applications. The difference between laser and natural light. The customer thinks some colors of led flash light are very special.
Through the analysis of natural light, the laser coherence. Read by students before class, a preliminary understanding of the characteristics and extensive application of the laser. Collection of laser materials, discuss and exchange, and further understand the characteristics and application of knowledge of the laser. Watch the video to further deepen the understanding of the knowledge of the laser. Laser flashlight, projector, video material of three of the laser division: lessons we have already read the text to understand the laser is the light of nature does not, first we take a look at it with natural light, what is the difference. The wholesale price of green laser pointer can be provided if the quantity is large enough.
Atom excitation emitted in an unstable state. Division: the comparison of the above table, the students can see first is a characteristic of the laser is that it is an artificial coherent light. Laser, there are many different characteristics and natural light, the following ask someone to read the text form finishing displayed. (Visits of teachers, most of the students finishing very well elect a more comprehensive set of projection, the above table, the teacher is simple to explain). Division: In fact, the application of the laser is far more than these, but also the rapid development of this introduction many following the collected materials before class, to carry out classroom exchanges. (Packet, the teachers at the same time extract the main points and the blackboard, in order to mobilize the enthusiasm of the students.) The OEM production of green laser pointer has high requirements for the equipment the manufacturer uses.
Spread long distances to maintain a certain intensity may be the precise range, velocity lidar can be brought together in a small record high density DVD, VCD, CD machine, computer CD-ROM of high brightness in a small space, short time focused energy laser cutting, welding, drilling, medical surgery. to produce high pressure caused by nuclear fusion. manual control the fusion reaction. (projection data) in our group collected the characteristics of the laser in the coherence, the laser is coherent light. To the optical interference, diffraction experiments (scientific experiments), due to the light atoms luminescence is not unlimited continuous, every light-emitting first light-emitting there is always a time interval, only one light source is issued in the same light-emitting time interval a point of encounter of the space will interfere. The workshop has changed the working time table of green laser pointer.
Atomic luminescence average time interval called the coherence time, known as the coherence length in the light of stroke within the coherence time of laser coherence length up to tens of kilometers, better coherence. The second group (projection data) the information collated by our group, the laser is characterized by the brightness of the laser is particularly high in recent years developed a strong laser brightness brighter than the sun more than 10 billion times. Issued by the laser of the laser is focused within a very small emission angle along the propagation direction, the brightness will be hundreds of millions of times higher than the same power source, radiate tremendous amounts of energy in a very short period of time, gather in mind when a few million or even tens of millions of degrees of heat. The customer and manager is discussing and deciding the package way of green laser pointer .
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