Chapter 750 One-stop Service 8
"Just give it a try." Zhou Yan smiled, "Once you try it, you'll know how difficult it is! It took me a long time to practice six consecutive drifts!"
The girl lowered her head and picked up a stone.
Zhou Yan immediately said: "No, no, you didn't choose the right stone, you should choose a flat or disc-shaped one!"
"It's okay, I'll just practice."
"Yi Mei, you have to be rigorous in everything!" Zhou Yan has a strong sense of variety. He snatched the stone from Xiang Yi's hand and led her to carefully select it. He also commented on the stones one by one, "Too big, no; too fat, no; too ugly, no."
The variety show effect came out all at once.
——[It’s confirmed that Yan Baoyan is a dog! 】
——【It’s so cute that Yan Sansui takes Yi Mei to look for stones! 】
——【I laughed so hard that I almost burst into tears. Yimei has it so hard! It feels like I’m taking care of a baby every day. Yuyu is my little baby, Lanlan is my little brother, and now there’s a giant baby named Yanbao!】
…
Finally, Zhou Yan selected the right stone and gave a serious explanation:
"Yimei, do you know why stones bounce when you skip stones on water? It's actually very simple. The greater the flow rate, the smaller the pressure.
The density of stone is greater than that of water. When skipping stones, the water will flow quickly in a short period of time, so the water surface will create pressure on the stone.
When the pressure is greater than the weight of the stone, the stone will bounce, and the more times this happens, the more times the stone will jump on the water surface."
Xiang Yi agreed: "Yes, the principles of fluid mechanics."
Zhou Yan gave a thumbs up: "Smart."
The audience in the live broadcast room were almost stunned.
Isn't it just a waste of money?
How come it's still so advanced?!
Xiangyi weighed the stone in his hand and had to say that Zhou Yan had chosen a very good stone, which felt great.
The girl held the stone between her thumb and thumb, with her index finger behind. Seeing her gesture, Zhou Yan called her an expert: "Hey, you're an expert!"
Xiangyi smiled calmly and slowly bent down with an elegant and casual posture. She seemed to use no effort and moved the stone with her index finger, but the stone was thrown out by her with great force, spinning!
"Bang!"
"Bang!"
“…”
After more than ten consecutive sounds, the stone finally sank to the bottom of the water with a "plop"!
Zhou Yan:?
audience:?
Is this an illusion? It must be, right?!
Xiangyi made a "hmm" sound, as if she was not satisfied with the result. She took out a spare stone and threw it again!
The familiar "bang bang" sound dominated everyone again!
This time, it rang twenty-three times!
Zhou Yan was dumbfounded.
Remembering what he had just said, "Call me brother and I'll teach you," he awkwardly scratched the sole of his shoe with his toes and wished he could jump into the pond right there and then!
This is fucking... this is unscientific!
The girl opened her lips slightly, her voice soft, "Once there was a professor who, based on the weight and speed of a stone and the influence of air, came up with a famous equation - the skipping stone equation."
Zhou Yan was confused: "Ah?"
The audience was confused: [Is Yimei fooling people? Is she? ? ]
Xiang Yi continued, "The equation is: MxA=P–MG+air effect. M represents mass, A represents vertical acceleration, P represents water surface feedback pressure, and MG represents gravity.
This equation has played an important role in the study of the problem of 'aircraft icing' and has also been used in the field of criminal investigation to calculate blood splatter."
Zhou Yan: ???
audience:???
Sorry to bother you, really sorry to bother you.
Is this science?
Sorry, it's a waste of money, I don't deserve it!!
…
The equation is quoted from the Internet.
Good night!
(End of this chapter)