Ask someone who really understands to answer a few physics questions and go to the side of the indis

1) The size of the obstacle is closer to the wavelength of light (the size of the general obstacle is much larger than the wavelength of the light).

2) Refracted light is partially polarized; The microscopic interpretation is calculated according to the wave function of the plane light, taking the reflective surface as a boundary condition.

The qualitative explanation is:

Natural light is equivalent to multiple incoherently polarized light in all directions.

When striking obliquely into the reflective surface, the vibration of each polarized light can be seen as a decomposition in two directions: parallel to the reflective surface and perpendicular to the reflective surface.

The vibrational energy should be distributed in the refracted light and the reflected light, and the distribution ratio is different in the above two directions because of the different angles of the refracted light and the reflected light.

In a special case, the reflected light and the refracted light are perpendicular to each other, and the reflected light only has a vibrational component parallel to the reflective surface, which is linearly polarized light, or fully polarized light. Refracted light, on the other hand, is partially polarized light that "subtracts" the linearly polarized energy of the reflected light.

When this condition is not satisfied, both the reflected light and the refracted light are partially polarized, and the directional polarization of the reflected light and the reflective surface is enhanced, and the directional polarization of the transmitted light and the reflective surface perpendicular to the reflector is enhanced.

3) Already inside (2).

4) is transparent, in fact translucent.

5) The propagation speed is called the photosphobic medium, and the opposite is called the photodense medium; The same beam of monochromatic light, in the photophobic medium, has a longer wavelength, and the interval between the peaks and troughs is relatively sparse - hehe, this is easier to remember, right?

"Zheng Ren Buys Shoes".

In ancient times, a person in Zheng Guo wanted to buy a pair of shoes, so he measured the size of his feet at home. He came to the shop that sold shoes in the bazaar, looked at a pair of shoes, and was about to buy them, when he suddenly found that he had measured the size at home and forgot to bring it, so he said that he forgot to bring the size, and he went home to get the size and buy it again, so he went back, but the market was closed. The person next to him asked him, you buy shoes for yourself, why don't you just try the size, what are you doing not according to the original size?

Zheng Guo's man said, "I'd rather believe that I'm measuring the right size, but my feet aren't necessarily accurate."

Later, people used the term "Zheng people buy shoes" to describe and ridicule those who do not look at reality and engage in dogmatism.

Explain that you should be flexible and do things according to the actual situation; Do not do things superstitious and dogmatic; Failure to respect objective reality will not lead to success!

"Indiscriminate Filling" explains: People who can't play the flute are mixed in the team of the pipe. It is a metaphor for those who have no skills to pretend to be skilled, and inferior goods to pretend to be good goods.

The story of "indiscriminate refill" tells people: although those who deceive can be confused for a while, they cannot be fooled for a lifetime, they cannot stand the test of time, and they will eventually show their feet.

In fact, Mr. Nan Guo told a big lie, and he didn't know how to blow the flute at all.

People like Mr. Nan Guo who do not learn and rely on deception to eat food will eventually be exposed to the test of practice and will be exposed. Only by practicing a strong true skill can we withstand all tests.

Examples should be in celebrity stories.

To be indiscriminate means to take the good as the bad, to pretend to be among the insiders.

It's just pretending to be pretending to be, and I don't know how to pretend to understand. The bad guy mixed in the pile of good people, that is, there was an emperor in ancient times, who wanted to listen to the pipe, so he invited a vote to play, and of course he had to pay money to play, so there was a vote of the person who played the flute, and there was a little gangster in it, who actually couldn't blow, so he was caught in that vote and blew blindly, so after blowing, they all took the same bonus.

Interpretation: The metaphor does not have real talent to win people, and is mixed in a certain group or ranks to make up the numbers. The parable is shoddy.

Idiom: Indiscriminate filling.

Pinyin: làn yú chōng shù

Explanation: Abuse: untrue, false. Those who don't know how to play the flute are mixed in the team of the flute. It is a metaphor for those who have no skills to pretend to be skilled, and inferior goods to pretend to be good goods.

Source: "Han Feizi Neichu Said": "King Qi Xuan made people blow the pipe, and there will be 300 people." Nanguo priest asked for the king to blow the pipe, Xuan Wang said, and the food was hundreds of people. King Xuan died, King Min was established, so he heard it one by one, and the priest fled. ”

Example: Adjusting personnel, is still the same. Zou Taofen, "Since the Anti-Japanese War", 27.

1: I am happy, I have friends from afar.

2: Indiscriminate filling, a metaphor for having no ability but mixing in the crowd with ability.

Abuse: inconsistent with the truth, untrue, false.

竽: A reed wind instrument.

Fill: Make up the number.

Those who don't know how to play the flute are mixed in the team of the flute. It is a metaphor for those who have no skills to pretend to be skilled, and inferior goods to pretend to be good goods.

Understanding of the story:

Mr. Nan Guo is a typical example of mixed rice eating. He doesn't study, he doesn't work, he lives by deception. Although such a person can also be confused for a while, sooner or later he will eventually show his feet.

People should contribute to society with honest work, both physical and mental. People's abilities may be big and small, but as long as they do their best, they will be respected by society. If you are like Mr. Nan Guo, you will become the object of everyone's ridicule.

Derogatory terms: inconsistent with the truth, untrue, false. 竽: A reed wind instrument. Fill: Make up the number. Those who don't know how to play the flute are mixed in the team of the flute. It is a metaphor for those who have no skills to pretend to be skilled, and inferior goods to pretend to be good goods.

Source] Han Fei "Han Feizi Neichu Said": "King Qi Xuan made people blow the pipe, and there will be 300 people." The priest of Nanguo invited the king to blow the pipe, proclaimed the king's pleasure, and feasted hundreds of people. King Xuan died, King Min was established, so he heard it one by one, and the priest fled. ”

Those who don't know how to play the flute are mixed in the team of the flute. It is a metaphor for those who have no skills to pretend to be skilled, and inferior goods to pretend to be good goods.

A person like Mr. Nan Guo who does not learn and eats by deceiving and eating can be deceived for a while, but he can't be deceived for a lifetime. What is fake is fake, and in the end, it cannot escape the test of practice and is debunked and disguised. If we want to succeed, the only way is to study diligently, and only by practicing a strong real skill can we withstand all tests.

Satirize those who have no real talent and real learning and are mixed with experts to fill the number, and show their feet after shoddy.

We're learning too.

I understand: people who don't have real talent and real learning are mixed up in experts; Or the bad stuff mixed with the good stuff will eventually be discovered.

The parable has no real talent and learning, but he is mixed in the expert and gets a job to get a job; Or take bad things and mix them with good ones. Sometimes, there are also people who use this idiom to describe themselves as modest.

Reason: We should learn well in a down-to-earth manner, and we can't fill in the numbers indiscriminately, otherwise we will eventually be discovered.

Satirize those who come to impersonate without real skills.

Don't learn oh a student.

1. Power supply, electrical appliances, switch wires.

2. Diagram of circuit connection with uniform graphic symbols (this is not very accurate, you can look at the book) 3. Directional movement of electric charges.

4. Positive charge moves in a directional manner.

5. One power supply and two channels.

6. Positive electrode electrical appliances.

7. Channel, open circuit, open circuit.

8 power supply 9 series and parallel 10b

In this era, physics still has concept questions?!

1. Power supply, electrical appliances, switch wires.

2. A figure that represents the structure of the circuit drawn with an agreed symbol 3, = =, The negative electron moves from the negative pole to the positive pole, and there is a current 4, the direction of the movement of the positive charge.

5. There is both continuous power supply and closed circuit.

6. Positive electrode electrical appliances.

7. Channel, open circuit, open circuit.

8. Power supply. 9. Tandem.

10、b

King Qi Xuan will make people blow pipes, and there will be three hundred people. Nan Guo Shishi, please blow the flute for the king. Xuan Wang Yuezhi, hundreds of people. King Xuan died, and King Min was established. After hearing it one by one, the priest fled.

1.Please explain the meaning of the word "say" in "Xuan Wang Shuozhi" and write sentences that are used in the same way as in the Ten Principles of the Analects.

said: Sentence with the same usage:

2.The idiom comes from this article, figuratively

A: This story is for those who . 1: Happy, there are friends from afar who don't say it 2: Indiscriminate filling, metaphorically having no ability but mixing in the capable crowd.