Physical - Mitsubishi mirror - Mitsubishi mirror effect: Mitsubishi mirror effect in Encyclopedia

ylbtech- physical - Mitsubishi mirror - Mitsubishi mirror effect: Mitsubishi mirror effect in Encyclopedia

White light is polychromatic light of various monochromatic light; the same media with different refractive indices for different shade; different speeds of different colored light propagating in the same medium. Because the same media with different refractive indices of the various monochromatic light, it passes through the prism, the deflection angle different monochromatic light. Thus, the white light through the prism will separate monochromatic light, i.e., dispersion.

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Chinese name: prism effect

English name: Prism effect

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The formula

official

Measured from the center of the pupil is the final step optometry examination. The measurement gap, the optical center of the spectacle lens can not match with the pupil center to form a prism effect, farther off the optical center, generating larger prism effect. The formula is:

P—D×L/10

parameter

Formula P-- degree prism effect produced;

D─ refraction lens;

L- optical center deviation in millimeters.

example

Example 20 10 D lens, the eccentric 1 mm, P = effect can produce 10 × 1/10 = 1 △ is. To overcome shift, excessive brain center regulating use fusion to generate visual fatigue, it can also cause the degree to deepen, even strabismus, such as: ××, male, 20 years old, diopter: R: a 8.00 DS ⌒- 1.50 DC × 170 °. ; L: a 6.50 Ds_⌒─2.OO DC × 180.

Because IPD is too large, the occurrence of visual fatigue, can not wear glasses, IPD piecemeal after the symptoms disappear.

application

Application of the optical prism effect changes near the center of the old mirrors produced, depending on the patient to eliminate the old work close reading and muscular asthenopia.

Method: After the patient wearing glasses is still near the symptoms of fatigue, the refractive further examination, the phoria, fusion power, is determined as muscular asthenopia. By a method of moving the optical center of the old mirrors, prism effect is generated, the number of outer phoria by 1/2 to 1/3 of the prism administration, the average about two. Results: The patients in the respective try old mirrors, lasting close reading, visual fatigue symptoms. Conclusion: there are still patients with symptoms of visual fatigue after posterior old mirrors, refractive further examination, phoria, fusion power, for patients with muscular asthenopia by changing the old mirrors of the optical center, resulting in prism effect, can effectively improve and eliminate muscular asthenopia.

psychology

Nowadays many young people like to wear big glasses. In this regard, medical experts warned. Because the eyes of adult normal pupillary distance is between about 58 to 62 mm, do not appropriately large glasses, which must be greater than the distance optical center interpupillary distance of the wearer, so that the visual axis of the lens edge portion by only gradually thick, cause "prism effect." The wearer is trying to see the goal, only greatly increase the burden of the regulatory function of the eye, over time there will be visual fatigue , resulting in dizziness, headache, eye pain and can not be long as the other symptoms. This "prism effect" is also found in some of the young people to learn, live and work in, in their eyes, in their minds, select the "multi-plan" upsets them distraught, confused as a result, " multi-program "nothing but a" no plan "to determine what programs are also selected for it, just get mentally confused and become impedance aspirations.

principle

problem

This shows that the transition "multi-program selection" to choose from the best decision is not easy, easy. The reason for this lies in two aspects; one is "multi-plan" could cause information overload. People have a certain "carrying capacity." If the amount of information than the current carrying capacity, the information receiving, sorting, storage and psychological mechanisms of transmission will not be able to fulfill its mandate, it will cause confusion, so there will be a lot of psychological defensive reactions, such as "missed signals" (overlooked some messages), "wrong answer" (ie distorted messages while perception, or make false response to the message), "deferred answer" (can not complete the task presented in a timely manner), "out of the flow of information" (regardless of the objective value put some kind of information is reduced to a secondary level to be eliminated), "reduce the full extent of the information classification and identification", (the information obtained oversimplify), "refused to sources of information" (Do not attempt to evade and new information ),and many more. Second, because the selected program itself; to choose who will be in a tough spot. Faced with multi-program alternative, is between the NAND, between good and evil, carried out between 'something valuable and worthless things selected, the difficulty of understanding, it is relatively easier; while many programs just to be with people in between, between good and good, choose an either between two valuable things, which often lead to conflicts with a choice between. For example, in recent years there is a hot topic in women - "What is the ideal woman." Someone to sing the praises of a strong woman, someone calling wife and mother, to this end and say, today, the reason is that the two types of elements that constitute personality is difficult to coexist in the same woman who, while both are two types of women valuable. This is the final analysis, is the dilemma of choosing between human needs can restore some kind of conflict with another need. Human needs are diverse. Usually faced with more than one, but several are available to take aim, which must be selected. Each has its purpose if the introduction of the Department, have some kind of necessity and possibility, people will occur. Psychologically, conflict, caused by internal psychological difficulties, indecisive between different purposes. The purpose of the introduction of the strength of each action more intense and close, the more acute the conflict, the more difficult to make a choice.

Obsession

The face of multi-program selection, "prism effect" choose often accompanied by psychological distress. But not without problems due to make a choice, otherwise all will be a value proposition and were discarded. This is like a long journey, although the speed of the aircraft, but did not train safety, train safer, but not the speed of the aircraft, we can not because neither so smug and simply do not go out of it. The spider will only stay in the troubled undecided or not before complaining, fatalistic people are nothing of.

That being the case, it is necessary to strengthen the will of the psychological quality. Because at that time not only need to judge, but also requires courage. Take decisions, is to make a choice in the face of complex situations process itself, from a power perspective, this process requires proceeded quickly and efficiently, and can help to achieve the smooth implementation of the next stage. Of the human will is too strong, this is the will of decisiveness. He showed the ability to quickly and decisively to take reasonable decisions. If you take the decision lacks rationality, without thought to rush to make a choice, it is a sloppy performance. Conversely, if between the various motives, wavering between different programs, means delays for no choice, it was indecisive performance. Scamp are weak-willed and indecisive features. Cowards die before he officially die many times, but never to waste time brave way to hide his indecision.

Solution

The decisive here, of course, is simply more decisively on the go choose "the best choice" option. This is the power of the will to use, learn to "limit themselves" to " focusing effect " drive "prism effect." Thousands of articles like a convex lens can focus light to a focal point, causing burning, like the light of spiritual wisdom and only under the focusing effect, in order to form a breakthrough energy-taught. It is like the philosopher Hegel pointed out: "there is a big achievement aim, he must, as Goethe said, knowing that limit themselves to the contrary, those who want to do nothing, in fact, they can do nothing, but after all. to fail. "indeed, the human brain originally is like a little empty attic, and you have to choose the furniture as you, fool takes in all the lumber debris he encountered an old brain child dress inside. We should set up "checkpoints" to his head, is not conducive to the objectives set for something, all restricted access. On the road leading to the treasure house of knowledge, talent goal, look around, see it take, would like to see that pick, the results are not worth holding shoulder gravel, weeds. The "I learned a lot of know-how, all of a sudden is not a lot to learn." (Locke language).

How to determine the "best choice"

So, learn how to judge, a certain kind of life and work of multiple projects is the "best choice" in it? That is, what is the limit, which is available as "coke" and efforts to "gather" in the ? This involves a question of the value of life. This naturally depends on lofty ideals, the correct political direction, the objective requirements of social development, and so on the basis of personal knowledge of the moral condition. It is self-evident. In the case of this tendency to determine the right value, in order to help determine the choice comes to looking for some "best choice" question in this method of multiple projects.

Reference is available

Is there any way for reference it? There are many natural methods. In this respect, an analytical method proposed by the experts, is quite meaningful reference. That is based on the following eight criteria, as multiple projects select the optimal "frame of reference": (1) strength, that relatively few programs which contribute most to meet the needs of our most intense. (2) uncertainty that priority must be able to determine the choices bring consequences than expected, and not just a little bit of possibility. (3) persistence, which is the expected consequences of the choice of priority should be to bring a more lasting and not transitory. (4) distance, that is the preferred choice should be able to quickly bring the expected results. (5) the degree of purity, i.e., the priority selection should be fewer side effects. (6) reproduction, that is the preferred choice should be supportive of other programs or temporarily abandon the plan to increase the "retreat" in the case of an emergency. (7) - extensive, that is the preferred choice for its intended result should be good for a wide range of people. Renewable (8) opportunity, that if some kind of opportunity is rare even longer life, then, when there is such opportunities help to achieve some kind of program, and this program should be qualified in priority considered. Of these standards, the specific trade-offs, you can score a point in line with an item, in violation of an item by one point, and then determine the center of gravity selected according to the number of points.

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Author: ylbtech
Source: http://ylbtech.cnblogs.com/
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