"In the past, I was drunk with flowers and willows in Chang'an, and the five marquis and seven nobles had the same glass of wine. In front of the heroic man, the romance is willing to fall behind others? ”

The drunken scholar had his hair exuding, the placket on his chest was scattered, revealing a large number of lean muscles, he stood on the table with a blurred gaze, holding a cup in one hand and a pot in the other, with a smile on his face, and read out this poem "Liuyelang Presents Judge Xin" by the poet Immortal Li Taibai.

The moment the door opened, Shen Kang and Jiang Liuxuan saw the situation in the elegant room opposite from the crack in the door.

Butterfly Dance smiled and said: "This crazy student is the leader of the Fengyang Mansion's academy examination, this person is such a person, don't care about the two sons." ”

Jiang Liuxuan laughed and said, "Such a romantic character, I wonder if I can ask Butterfly Dance to introduce the two of us?" ”

Butterfly Dance smiled and said, "It turns out that the two sons are not only not tired of this guy, but they like it a little?" ”

Shen Kang smiled and said, "This person must be talented, and he has the pride to be drunk and chanted in front of the heroic man who is willing to fall behind others." ”

Jiang Liusu smiled and said: "He is the leader of the Fengyang Mansion Academy, and the two of us are also..." Speaking of this, he paused, deliberately not wanting to show his old bottom in advance, and said with a smile: "Can you recommend it?" ”

Butterfly Dance said: "Since Jiang Gongzi has spoken, it is a great difficulty that Butterfly Dance can't push back, haha, besides, this is not a difficult thing." ”

Saying that, Butterfly Dance stood up and said, "The two sons please take care of yourself for the time being, and Butterfly Dance will go back when she goes." ”

Butterfly Dance went out, Shen Kang said with a smile: "It turns out that the elegant room on the second floor is so elegant and quiet, no wonder Butterfly Dance girl is so confident." ”

He looked at the alcove and hearth in the tea room. The guest sits on the left hand side of the host, which the Ming people call the handy seat.

Guests enter the tea room through a small exit unique to the tea room, and a tulle screen made of round sandalwood is placed behind the screen, and the word "tea" is written in regular script behind the screen.

The word "tea" is surrounded by elegant and handsome calligraphy, and the tea poems of Yuan Zhi are written.

Tea.

bay leaves, young shoots.

Mu Shike, love monks.

Grinding white jade, weaving red yarn.

Cho fried astragalus, bowl twisted dust flowers.

After the night, he was invited to accompany the bright moon, and he was ordered to the morning glow before the morning.

Wash away the tirelessness of ancient and modern people, and it is not possible to boast when you are drunk.

There are two quaint lamps, a simple tea table, and a bunch of pine nuts on the side of the tandoor.

On the side of the tea table, a spherical hollow sachet made of gold and silver.

The outer wall of this sachet made of silver, hollowed out throughout, is bounded by the central horizontal line, evenly divided into two hemispherical shapes, between the upper and lower balls, one side is hooked with a hook chain, and the other side is matched by a movable shaft. There are two layers of silver concentric rings in the lower sphere, which are connected to the outer wall and the innermost gold incense bowl.

The outer wall of the sachet is wrapped with grapes, flowers and birds depend on each other, and what is even more amazing is that no matter how the sachet is shaken, the spices will never spill.

Such an ingenious structure is truly breathtaking.

Shen Kang raised his hand to play with the sachet and opened the sachet lightly, wanting to know, why no matter how he shook it, the spice would not spill out?

Suddenly, Shen Kang's eyes lit up and he exclaimed, "Jiang, Brother Jiang!" Look at this sachet! ”

Jiang Liushu said disapprenously: "Similar to this kind of sachet, it was fashionable in the Tang Dynasty, look at this style, it should be some years, grapes were introduced to Middle Earth by foreign domains, and this sachet should come from the Western Regions." ”

Shen Kang can imagine that when a young girl hangs the sachet on her waist and sways the sachet back and forth between walking, what a graceful gesture it is, and her steps are really beautiful.

Shen Kang shook his head violently: "No! ”

"Isn't it?" Jiang Liu tilted his head and said suspiciously: "What are you nervous about?" It's just a sachet, if you like it, my son will give you a box. ”

Shen Kang was dumbfounded for a long time before he shouted: "Gyroscope!" ”

The gyroscope is an angular motion detection device that uses the momentum moment of the high-speed rotating body to sense the relative inertial space of the shell around one or two axes orthogonal to the axis of rotation. The main part is a rotor that rotates the axis of rotation at a very high angular velocity, and the rotor is housed in a bracket. Angular motion detection devices made of other principles are also called gyroscopes that perform the same function.

The reason why this spherical sachet never allows the spices to spill out is because of this gyroscope inside.

Such black technology can be used in navigation technology in the future, and even in aerospace and aviation technology. Now, Shen Kang found it in this small sachet.

Europe used it for navigation, opening the age of sailing, and at this time, the Ming Dynasty still used it for fun, on women's belts!

The sachet is no more than five centimeters in diameter, less than two millimeters thick, and the thinnest pattern is only one millimeter. Chinese people can play, it can be seen.

What's more, according to Jiang Liusu's words, this technology already existed in the Tang Dynasty.

Jiang Liuxuan looked at the excited Shen Kang and said suspiciously, "What's wrong with you?" What's wrong with this sachet? ”

Shen Kang said: "A rigid body that rotates around a fulcrum at high speed is called a gyroscope. The so-called gyroscope is specifically referred to as a symmetrical gyroscope, which is a rigid body with a uniform mass distribution and an axisymmetric shape, and its geometric axis of symmetry is its axis of rotation. Under certain initial conditions and a certain external moment, the gyroscope will rotate around another fixed axis while constantly rotating, which is the spinning of the gyroscope, also known as the rotation effect. ”

Jiang Liusu listened to this explanation, his face was full of doubts, he really couldn't understand a word.

He said angrily: "You are a special mother! ”

Shen Kang smiled and said, "In short, the internal structure of this sachet can be made into a rotary compass, an orientation indicator, the flipping of a cannonball, the nutation of a gyroscope, the spiral of the earth under the gravitational moment of the sun and the moon, and so on. ”

He swallowed excitedly, and continued: "Give me time, I can disassemble it and make it into a gyroscope that is really used in navigation, and from now on, the Ming Navy will never lose its way again." ”

Jiang Liushu was slightly stunned, then his eyes widened, and he asked, "Are you talking drunk?" ”

Shen Kang said: "Of course not! ”

Jiang Liuxuan was excited in his heart, such a small sachet, he had also played with it all day long, why didn't he think of opening it, what use was there to study it?

Shen Kang continued: "It's crazy! It's crazy talk! He said excitedly: "Brother Jiang! Did you know that the first gyroscope was in 1850 when the French physicist Léon Foucault first discovered the rotor rotating at high speed in order to study the rotation of the earth. And today, we are going to change this history! ”

Crazy talk, crazy talk!

Jiang Liuxuan looked at the crazy Shen Kang, and there were only these two words in his heart.

Shen Kang held the sachet in his hand, his body trembled slightly, his lips were tightly pursed into a line, he exhaled and inhaled, raised his lips, and said with a smile: "Sinan, you will withdraw from the stage of history." ”