"It's just a fluke" Yang Chao said, without elves, he would definitely not be able to pass this level.Zhang Zhongchen waved his hand and said, "It's over, it's over, don't be modest, I'm looking forward to your performance now." ”Zhang Zhongchen's words fell, not only Yang Chao, but even Gao Donglai and the three of them were also mentalizing their spirits and listening carefully, the first two levels were so difficult, let alone the third level."
The third level is: devise a method to calculate the speed of light."
Zhang Zhongchen said."
Light still has speed, isn't light able to reach infinity in an instant" "Light is a thing, shadowless and invisible, how to calculate his speed" "This is simply more difficult than ascending to the sky, I'm afraid Yang Chao will be brushed down this time." ”Gao Donglai and the three of them were dumbfounded, it was the first time they had heard that there was speed alone, let alone calculated.At this moment, they looked at Yang Chao pitifully, this third level is simply a moat, an impossible pass.Gao Donglai and the three of them were shocked and gloated, but Yang Chao smiled and laughed very happily.Earth Xuanxing is a cultivation civilization, and almost no one cares about the speed of light, but for scientific and technological civilization, the speed of light has been accurately calculated as early as the Earth era, so for him, he has dozens of ways to calculate the speed of light.It's just that in the current environment, it is not so easy to calculate the speed of light at the shortest speed.However, it is not very difficult, Yang Chao thought of Fisso's ground surveying method, which was designed by the Frenchman Fisso in 1849.Fisso's ground measurement method is as follows: a point light source is placed at the focal point of the lens, a gear is placed between the lens and the light source, and another lens and a plane mirror are placed in turn at the distance of the other measurement of the lens, and the plane mirror is located at the focal point of the second lens.The light emitted by the point light source becomes parallel light after passing through the gear and lens, and the parallel light passes through the second lens and then gathers at one point on the plane mirror, and then returns according to the original path after being reflected on the plane mirror.Since gears have backlash and teeth, the observer can see the returning light when it passes through the backlash, and it is obscured when the light happens to meet the teeth.The time from the beginning to the return of the light disappears for the first time is the time it takes for the light to make a round trip, and it is not difficult to find this time according to the speed of the gear.Due to the relatively simple conditions, through this method, the speed of light measured by Fisso is 315,000 kilometers and seconds, although it is not very accurate, but it is also very close, and there is no problem in dealing with Zhang Zhongchen.At that moment, Yang Chao began to explain Fizeau's ground measurement method to Zhang Zhongchen, Zhang Zhongchen is obviously also a university questioner, so Yang Chao's narration is easy for him to understand, although there is no hands-on experimental measurement, but he knows that the final calculated number must be the real speed of light.Gao Donglai and the three of them were in a fog and didn't know what to do at all, but looking at Zhang Zhongchen's look of great interest, it was not difficult to know that I was afraid that this level would be easily passed by Yang Chao.When others are only a little better than themselves, people usually have a jealous mentality, but when the gap is too big, then it is not jealousy, but worship.For Yang Chao, Gao Donglai and the three of them were still jealous before, but at this moment, all they have is the heart of admiration, and the two are not on the same level, so they cannot be compared at all."
Okay, very good, Yang Chao, you really impress me, this third level, you have also passed, I want to take you as an apprentice, how do you see it" Zhang Zhongchen said loudly, his heart, which had been calm as water, also stirred, you must know that the speed of light also took him a lot of time and energy to solve, but Yang Chao used such an ingenious method to calculate, and the amazing talent is not enough to describe.Yang Chao's face was slightly red, he also plagiarized the wisdom of the ancients, otherwise he would not have thought of such an ingenious and simple method for a while.However, he knelt on the ground very quickly, bowed down and said, "Disciple Yang Chao, please meet the master." ”"Okay, good apprentice, hurry up, haha, I'm so happy today."
Zhang Zhongchen laughed and accepted Yang Chao, a personal disciple, and he also fulfilled his promise to Gao Donglai and the three of them and accepted them as registered disciples."
Disciple Gao Donglai, Lu Zhongshu, Cui Zhihong to meet the teacher" The three of them knelt on the ground and shouted loudly, although they are registered disciples, but Zhang Zhongchen has only four disciples, and the resources they enjoy at that time may not be worse than other people's personal disciples."
Well, since you have already worshiped me as a teacher, now follow me to meet the sect master, and then go to worship the ancestor and become a personal disciple."
Zhang Zhongchen said, turned around and left, and Yang Chao and the four of them hurriedly followed.Soon the group came to the Feiyu Hall of the Flying Feather Sect Lord, a huge building with a height of nine feet, Xiao Li sat high on the top, he watched Zhang Zhongchen walk in with the four of them, a smile appeared on his face in surprise, and he hurriedly walked down, and arched his hand: "Congratulations to Senior Brother, the four good apprentices who were accepted at one time." ”"Zhang Zhongchen turned out to be Xiao Li's senior brother," Yang Chao was also shocked in his heart.Zhang Zhongchen stroked his beard and smiled, and said, "I did accept a good apprentice, but there is only one."
Sect Master, this is my personal disciple Yang Chao, who has passed all my assessments, these are my three registered disciples, although the talent is a little worse, but the victory lies in the tenacity of the will, which is rare. ”Xiao Li looked at Yang Chao with a pair of starry eyes, and looked deeply, he was very clear about Zhang Zhongchen's conditions for accepting apprentices, for hundreds of years, I don't know how many geniuses wanted to worship him as a teacher, but not to mention all of them, there were very few who even passed the first level.Yang Chao can pass all of Zhang Zhongchen's assessments, and he is also an extraordinary person without thinking."
Yes, Qi Yu Xuanang, a talent."
Xiao Li nodded, and he said to Zhang Zhongchen: "This time I have set up ten difficulties, and no one has passed through them until now, and I don't know if I can receive a satisfactory apprentice." ”"It's still early, and it will take at least ten days and half a month to get results.Sect Master, I'll take them to worship the patriarch first. ”Zhang Zhongchen said.Leaving the Feiyu Palace, Yang Chao followed Zhang Zhongchen to worship the ancestors of the past dynasties, and the ancestral hall enshrined the tablets of the ancestors of the past dynasties, the highest of which is naturally the tablet of the founding patriarch of the Feiyu Sect."
Among the patriarchs of the past dynasties, it is natural that the founding patriarch cultivates the highest, and it is said that he has broken through the realm of returning to the void.In order to pursue the mysteries of the Heavenly Dao, the patriarch traveled to the endless starry sky, and then never returned. ”Zhang Zhongchen said."
Returning to the Void Realm, Master, is the Returning to the Void Realm the realm after the True Ru Realm" Yang Chao's heart moved, and asked curiously, you must know that the Earth Federation's cultivation system has come into existence from scratch, and now the officially announced cultivation system is just the True Ru Realm."
Not bad.Forging the body realm, the divine power realm, the vitality realm, the primordial fetal realm, the transformation of the god realm, the condensation realm, the manifestation of the god realm, the true realm, the sitting and forgetting realm, and then the realm of truth, the realm of the void.However, in the Earth Xuanxing, there are very few people who can reach the Returning Void Realm in the past dynasties, and generally when they reach that stage of cultivation, they will go to the extraterrestrial starry sky one after another, seeking a breakthrough in a higher realm. ”Zhang Zhongchen explained."
What is the realm after returning to the virtual realm" "I don't know this, I'm afraid I can only know if I ask the patriarch."
Well, you don't have to be ambitious, that realm is difficult for most people to achieve in their lifetime. ”Zhang Zhongchen said.aa2705221: