"Try it. Zhou Yan grinned, "You will know how difficult it is after you try it! I have been practicing for a long time to drift six times in a row!"

The girl lowered her head and picked up a stone.

Zhou Yan immediately said: "No, no, no, you don't pick this stone well, you have to choose a flat or saucer-shaped one!"

"It's okay, I'll practice. ”

"Yimei, everything has to be rigorous!" Zhou Yan has a strong sense of variety show, and he pulled the stone down from Xiang Yi's hand, led her to carefully select, and commented on the stones one by one, "It's too big, it's not good, it's not okay if it's too fat, it's not okay, it's not okay if it's too ugly." ”

The variety show effect came out all of a sudden.

——[Yan Baoyan's dog is really hammered!]

——[It's too cute to take Yimei to find a stone at the age of three!]

——[I laughed until I spiraled to the sky, Yimei is too difficult! I feel like a cub every day, Yuyu's little baby, my little brother, and now there is a giant baby Yanbao!]

...

Finally, Zhou Yan chose a suitable stone, and came to a popular science in a hurry:

"Yimei, do you know why stones bounce when you hit the water? Actually, it's very simple, the higher the flow rate, the lower the pressure.

The density of stones is greater than that of water, and when the water is floating, the water will flow rapidly in a short period of time, so the water surface will put pressure on the stones.

When the pressure is greater than the gravity of the stone, the stone will bounce up, and the more this situation is repeated, the more the stone will jump on the water. ”

Xiang Yi agreed: "Well, the principle of fluid mechanics. ”

Zhou Yan gave a thumbs up: "Smart." ”

The audience in the live broadcast room is already looking stupid.

Wouldn't you just make a splash?

Why is it still so advanced?!

Xiang Yi checked the stone in his hand, and I have to say that Zhou Yan chose this piece very well, and it felt very good.

The girl pinched the stone with her thumb and thumb, her index finger was behind her, and when she saw her gesture, Zhou Yan called the insider: "Hey, expert!"

Xiangyi smiled calmly, slowly leaned down, the posture was elegant and casual, she didn't seem to use any strength, her index finger flicked the stone, but the stone was thrown by her with extreme force, spinning!

"Bang!"

"Bang!"

“......”

It sounded more than a dozen times in a row before the stone "plopped" and sank to the bottom!

Distributed:?

Spectator:?

It's a hallucination, right?

Xiangyi said "hmm", as if she was not satisfied with the results, she took out a spare stone and threw it again!

The familiar "bang" sound once again dominates everyone!

This time, it rang twenty-three times!

Zhou Yan was dumbfounded.

Remembering what he said just now, "I'll teach you big brother", he picked at the soles of his shoes with his toes awkwardly, eager to jump into the pond on the spot!

What the is this...... It's not scientific!

The girl opened her lips lightly, and her voice was soft: "There was once a professor who summed up a famous equation through the weight and speed of the stone and the influence of the air. ”

Zhou Yan was confused: "Huh?"

The audience was in a trance: [Yimei is fooling people, right?

Just listen to Xiangyi continue: "The equation is: M x A = P– MG + air influence. M stands for mass, A stands for vertical acceleration, P stands for surface feedback pressure, and MG stands for gravity.

Through this equation, the study of the problem of 'aircraft icing' has played an important role, and it has also been applied in the field of criminal investigation to calculate the splash of blood. ”

Distributed:???

Spectator:???

Excuse me, really bother.

Is this science?

I'm sorry, I'm not worthy!!