Chapter 239: The Name of the White Turtle

An old man and a young man sat down, and Su You began to write and explain the truth to Lao Zhao.

"The law of twelve equals is an artificial law, that is to say, it is not a natural law, and unlike the pure law and the law of fifths, its existence is to get close to the law of fifths to the greatest extent, and at the same time to complete the perfect transposition."

Lao Zhao was stunned again: "What is pure law?" ”

Su You said: "Why should this problem be studied, we have to start from making Wanshougong lanterns for the official family last year." Because of the large size of the Wanshou Palace lamp, more music information can be recorded on the copper ring. ”

"In this case, in order to express our greatest love and respect, Jiang Qing decided to let Gong Deng play three pieces of different tunes at the same time, and let them be excellently matched to form overtones to produce a more beautiful musical experience, which we call - chords."

This is the pit that Su You dug for himself, he originally thought it would be an easy thing, but when Banniang and others were making music, they found that with the old music theory, it was impossible to set a quasi-chord and turn four to five.

"During the production process, we found that in addition to the law of fifths, there was also a rhythm system that was more suitable for chords. Silk strings with a ratio of two to three string lengths and a four-to-five ratio of string lengths can be used to determine the height of each note. ”

"The sound of this rhythm is monotonous, but there is an advantage, the chords are very compatible, because of its purity, Banniang named it pure rhythm. By the way, she also said that there is a song in the guqin, "Jieshi Tune, Youlan", which uses this legal system, which is actually ancient. ”

Lao Zhao nodded silently, and compared his hand on the table: "This song is passed down by Qiu Ming, a pianist of the Liang Dynasty, according to Cai Yong's "Qin Exercise", Confucius traveled around the world, not appreciated, on the way back to Jin from Wei, he saw Fanglan in the valley, Wu Yu weeds, and felt that he had not met and made it, a "Yilan". Qiu Gongyun's song is from Qi Xiao below, and there is a sound of immortals......"

"Hmm...... Nameless when ten cases of feathers. Restrained feathers. Big finger when the nine also case feathers. Sick and full of feathers. Yang Pan Eleven. Nameless dealers. Cover the nine. Feathers. Ha...... On top of the sound, it really is! Your Baniang is an expert! ”

Su You said: "I don't understand these things, but pure law still can't solve the problem of transfer." Later, we found out that pitch is actually related to time. ”

"The ancients associated the Twelve Laws with the Twelve Decrees. In fact, after our research, it has more to do with the twelve hours! ”

"We ink the reed, flick it, drive the wheel with a constant flow of water, and pull the paper tape quickly to get a lot of small dots that record the vibration of the reed."

"These dots prove that the faster the vibration of a substance of the same density, the higher the sound it emits, and the lower it is otherwise."

"So I subdivide the unit time, 12 hours in a day, 120 minutes per hour, 60 seconds per minute, and then give a definition of the number of vibrations per second."

The studious Zhao Luan raised his hand: "Mingrun, why do you define it like this?" ”

Su You said: "Because the definition of time is derived from the periodic minutes and seconds, the three hundred and sixty degrees of the week are convenient to calculate with sixty incentives, and the unit time obtained in this way - seconds, is used for calculation, the number is not too large and small, it is a convenient and practical unit of time." ”

Zhao Pan nodded, indicating that he understood.

Su You continued: "In order to facilitate manufacturing, we selected a reed with 256 vibrations per second as the standard tone. ”

Zhao Luan raised his hand again: "How did the number two hundred and fifty-six come from?" ”

Su You said, "Uh...... Because it is an integer multiple of two, and the law of twelve equals is the twelfth root of two, two hundred and fifty-six is used, just for the convenience of calculation. ”

Zhao Luan nodded again, this is the old way of thinking of this baby polytechnic, flexible, as long as it can solve the problem, it is a good way.

Su You said: "Of course, this tone is not a standard yellow bell - in fact, the Great Song Dynasty has not set a standard yellow bell until now - but with this benchmark tone, you can use the twelve equal temperament to calculate the adjacent tones, arrange these sounds, and choose the tone closest to the yellow bell on the piano as the benchmark tone." ”

"So we get a base twelve-temper scale, and then we get two other voices based on that."

"As we said just now, the 12 equal laws are relative laws, so even if the yellow bell we get is not really a standard yellow bell, but with a standard tone and 12 equal rhythm system as the yellow bell, we can make various scales, sound parts, and make a harmonious multi-part tune, which solves the musical problem on the palace lamp."

"This is the design idea of the music part of the glazed palace lamp, the twelve equal temperaments, which solves the problem of timinating and transposing - oops, it exhausts me."

Ignoring Su You's ugly performance, Zhao Luan was already deeply immersed in the wonderful music theory, looking at the information written by Su You with one hand, and hitting the copper rod with a copper stick in the other, even the servants came up to change the tea without realizing it.

Su You asked in a cautious low voice, "Ming Gong, what ...... White tortoise, I took it away? ”

Zhao Pan didn't even look at Su You, and waved his hand with a copper stick.

Su You grabbed the servant who was changing the tea: "Ming Gong agreed, you have to testify for me in a while!" ”

The servant looked at Zhao Luan, and then at Su You, with a confused expression.

……

Su You was afraid that Zhao Luan would regret it, so he took the white turtle directly to the school palace, and when he finished school, he immediately rode a donkey to the Jade Bureau Temple.

Running into Shi Wei's residence with a wooden basin: "Wei'er Wei'er, I'll win the white turtle for you!" ”

Shi Wei was applying needles to the bronze man, and the gold needles were accurately pierced into the acupuncture points of the bronze man, and when they were taken out, a little bit of mercury was brought out on the tip of the needle.

Yuan Degong was very satisfied: "Wei'er's acupuncture is progressing very quickly, but pharmacology and medical science still need to be strengthened, your little oil brother is here, that's it today, let's go play." ”

Shi Wei wiped the golden needle, put it away, and bowed to Yuan Degong. Then ran out of the room: "Brother Xiaoyou, show me the white turtle!" ”

Su You said proudly: "From today onwards, this is our family, Wei'er, you can give it a name." ”

Shi Wei thought for a while and said, "We have a wooden guest, this one is called a jade slave, okay?" ”

What is wrong with Su You: "Well, yes, Wei'er can really think of a name." ”

After speaking, he picked up the white turtle and looked at the tail: "I just don't know if it's a man or a woman......"

Zhang Xiangzhong took a large bouquet of osmanthus flowers into the small courtyard: "Yo, Mingrun is here?" ”

Su You smiled: "Brother Xian, why are your eyes black circles again?" ”

Zhang Xiangzhong said with a smile: "There have been a lot of things recently, and there are comets of Ziweiyuan, and there are seven stars. Its color is white, and it is more than light. I have to use a telescope to observe every day, and then someone launches a solar eclipse next year, and I have to re-examine it, and I have to study chemistry, there are too many things......"

"Another eclipse?" Su You bowed down and said, "I'm really grateful to be so busy and remember to send flowers to Wei'er." ”

Zhang Xiangzhong said: "How are you over there?" Bachelor Zhang left, but Zhao Gong shook the Yizhou officialdom a lot. ”

Su You said with a smile: "I'm just a scholar, and I help him sort out the materials in Shuzhong every day...... Oh, when I talk about this, I am angry, silkworm bushes, cypress irrigations, fish stalks, and open-mindedness all don't recognize it, I have to start from Yong, Shu, pedantic nerd! ”

Zhang Xiangzhong laughed: "Then you got a "Shangshu Prayer" to embarrass him, right?" ”

Su You said "Huh": "How do you know?" ”

Zhang Xiangzhong looked at Su You: "Zhao Gonghe Yi Changhou, with a clear appearance, respecting school, etiquette and Confucianism, is an elegant and generous person." was so endangered by you, and did not forget to help you make a name for yourself in Chengdu, you should respect him as much as possible. ”

Su You said: "I respect it, I make three meals a day by myself, what else?" ”

Zhang Xiangzhong said with a smile: "It is very beneficial to you to form this good fate, although Zhao Gong does not avoid impeachment of the powerful, but he is also very kind to many ministers." ”

"Lu Qin, Cai Xiang, Wu Kui, and Han Jiang were all able to return to the center because of him; Ouyang Xiu and Jia Di also stayed in the capital because of his advice. ”

Seeing Su You's bewildered face, Zhang Xiangzhong explained: "Lu Qin, champion; Wu Kui, Department of Preparation; Han Jiang, Tanhua; Ouyang Xiu, Wen Zong; Jia Dian, Zhuangyuan; Just one Cai Xiang almost ranked tenth in the exam, but he is also a famous calligrapher, these people can be called a generation of culture, just lift you up, that will also benefit a lot. ”

Su You muttered to himself: "It turns out that what he said is true......"