Medical Sovereign

Ding Ning watched Kang Hua playing Beethoven's Symphony of Destiny while watching Kang Hua entertaining himself with a face full of intoxication through the eyes of the magic mosquito, and couldn't help frowning.

Nima, this piano level is too bad. Even many scales are wrong, so I can only coax laymen. He plays a hundred times better than him.

When he came up with this idea, he was suddenly stunned. Since childhood, he has learned a lot of traditional music from the old master, such as Xun, Xiao, Qudi, Guanzi, Konghou, (Gu) Qin, (Gu) Zheng, Pipa ,

Chime bells, bronze drums, hall drums, and gongs can be played at his fingertips. Don't look at Lan Mengdie's whole way: "As far back as ancient times, human beings have discovered that beautiful music can relieve nervous tension, relieve fatigue, and stimulate energy. Even in modern times, there are ultrasonic waves, infrasound waves, etc. used in combat, industrial production, daily life, or in treating diseases and saving lives, so how could it be useless.”

Ding Ning was stunned for a moment, suddenly enlightened as if enlightened, with a look of shame on his face, yes, how could he forget the great effect of sound waves.

With the development of science and technology, modern acoustics has also developed rapidly, and has been widely used in various aspects such as industry, agriculture, national defense, transportation, health, education, scientific research, cultural life and society, forming many emerging Borderline subjects.

Acoustics is a subject that studies the generation, propagation, reception and action of sound waves in various media.

The medium for propagating sound waves has three different states, which are generally called gas, liquid and solid, so they form corresponding sub-disciplines, respectively called aeroacoustics, hydroacoustics and ultrasonics. Among them, aeroacoustics involves people's hearing, so it is related to people's hearing. Cultural life and social activities are closely related.

Since acoustics has different propagation characteristics when it propagates in different media and in different states, these characteristics can be used to study and measure the physical properties and states of various media, such as elastic modulus, hardness, viscosity, temperature, thickness, material level etc.

In particular, ultrasonic waves with higher frequencies interact with certain microstructures inside substances, such as ultrasonic waves interact with electrons in metals, semiconductors, and superconductors, so they can be used for the study of material structures. Oil production.

Because the ultrasonic wave has a small attenuation when propagating in solids and liquids, the propagation distance is correspondingly longer, which is generally called strong penetration; at the same time, the ultrasonic frequency is high and the wavelength is short, so the sound field radiated in solids has strong directionality, and the propagation process It can be used to detect the position, size and nature of defects inside metal and non-metal materials. This is one of the widely used non-destructive testing technologies-ultrasonic testing. The same principle is applied to In the human body, certain diseases, organ dynamics or physiological changes in the body can be checked from the outside.

But it is such a powerful subject, he ignorantly said it was useless,

How can you make him feel ashamed, blushing in shame and saying: "I was wrong, it is indeed my short-sightedness."

Seeing his sincere attitude of admitting his mistake, the mermaid wagged her beautiful tail and said with satisfaction, "Don't underestimate any kind of elemental substance, as human beings say that if you are born with something, you will be useful." It’s the same reason, any part of this world, even a piece of grass, a drop of water, a stone, or a small flower has its meaning of existence.”

"Yes, that's what you said."

Ding Ning was ashamed, what happened to the mermaid? He even started to learn to preach.

"Don't believe me, just like what I said, if the sonic melody is powerful enough, it can even destroy the entire world."

Seeing that Ding Ning seemed a little disapproving of her words, the mermaid said a little annoyed.

"Sonic destroys the world? Are you kidding me?"

Ding Ning raised his head unconvinced, and looked directly into the eyes of the mermaid, but he couldn't see any hint of joking from her embarrassed eyes, she seemed really angry, which made him a little embarrassed, and asked embarrassingly: " Can it really destroy the world?"

"Theoretically, it is completely possible, as you humans say, "If you give me a fulcrum and a long enough lever, I can move the whole earth", it is the same reason."

The mermaid said regretfully: "It is impossible to have such a terrifying sound wave on the earth."

"Fortunately not, otherwise the earth would have been finished."

Ding Ning complained weakly: "Fortunately, there is no suitable fulcrum and long enough lever for Archimedes, otherwise the earth would not know where he pried it to now. I can't say if there is any."

"Heck, you are good or bad, I hate you, I don't bother to talk to you!"

The mermaid smiled amusedly, and gave him a charming look, then wagged her tail back to his arm and turned it into a tattoo.

Only Ding Ning was left standing alone in the wind, messy in the wind, with two big words written on his face - bewildered!

What the hell is this? Mermaids are becoming more and more humanized, yes? Now not only get angry but also learn to flirt.

Nima, this is the rhythm of becoming a spirit. Eldest sister, you don’t know that animals are not allowed to become spirits after the founding of the People’s Republic of China. Well, in fact, you are a fairy from the beginning, so you don’t have to complain, so let’s continue to work.

"Puff!"

As soon as Ding Ning calmed down, the mermaid floated out spit bubbles in an unorganized and undisciplined way, and asked mysteriously, "Do you want to try the power of sound waves?"

"How to try?"

Ding Ning was curious and asked eagerly.

"You and I share a living body. You can also use the innate supernatural powers I possess, but your current mental power is too weak, and you can only use primary sound waves. Feel it."

After finishing speaking, the mermaid floated back and turned into a tattoo, but a clear stream of information flowed into Ding Ning's mind, allowing him to easily master the use of elementary sound waves.

Ding Ning swallowed, and his face became extremely strange, Nima, this sonic cliff is a good thing, but, why does it look so evil?

What sound blade cutting jj, the old man pushing the cart, the roots of the old tree, Guanyin sitting on the lotus, arranging flowers on the back...

What the hell kind of names are these? Ding Ning was silent and weeping for a thousand lines. This name was obviously added by the mermaid later.

I won't talk about the sound blade cutting jj, literally, but the sound blade can not only cut jj, but also cut the head.

The old man's cart uses sound waves to form a wide-area attack wave to push down the enemy. It covers a wide area and has low lethality. It is suitable for saving people.

The root of the old tree uses sound waves to bind the enemy, which has a similar effect to the blue and white eye, and is an auxiliary attack method.

As for Avalokitesvara sitting on the lotus, it uses sound waves to attack from top to bottom, which is very difficult to control.

Arranging flowers behind the back is more vicious. Using sound waves to attack the enemy's chrysanthemums is a more insidious attack method.

...

Looking at these evil names, Ding Ning looked up to the sky and sighed. He didn't expect such a simple, kind, beautiful and lovely mermaid to be corrupted. What's wrong with this world?

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