Another fiasco!

And this time he pressed under him and rubbed it.

Liu Yun'er's mood was very low, she didn't want to admit that she was worse than the big fool in front of her... But in fact, it is very poor, he can always solve the problem faster than himself, and the solution is very perfect.

"What's wrong with you?" Lin Fan asked with a concerned look when he saw Liu Yun'er's depressed appearance.

"I..."

"You..."Liu Yun'er looked at Lin Fan and pursed her lips... Dissatisfied, he said, "This is obviously my idea." ”

"What do I think, aren't they all the same? Lin Fan breathed a sigh of relief and said with a smile: "Anyway, I found another problem... When the hourglass is in quicksand, it tends to fall first and then rise, and I tried to analyze this reason from a theoretical perspective. ”

Hearing Lin Fan's words,

Liu Yun'er swept away all the haze before and asked curiously, "What is the reason?"

"Uh..."

"I calculated the quantitative relationship between the apparent weight of the hourglass system and the change of parameters such as the initial falling height of the sand, the mass flow rate of the sand at the outlet. Lin Fan said seriously: "In fact, the size of the curve has nothing to do with the total mass, but it has to do with the height of the outflow. ”

"For example..."

"The state of falling after touching the ground... It is in an overweight state, and the apparent weight is larger than the initial weight at this time. Lin Fan paused and continued: "I suspect... This may be related to the initial velocity at the exit. ”

Liu Yun'er looked at Lin Fan, looking at the big idiot in front of him who often bullied herself, this can actually extend the change of visual weight?

"Can you show me your calculations?" asked Liu Yun'er.

"Hmm. ”

Lin Fan nodded, directly handed his calculation process to Liu Yun'er, and then said seriously: "Don't ask in the future... Just take it. ”

When Liu Yun'er heard this, a trace of warmth flowed through her heart, and finally... Finally said a human word!

After taking Lin Fan's manuscript paper, Liu Yuner carefully studied Lin Fan's calculation process, and I have to say... The whole process was so simple and straightforward, with almost no flaws, that she was sure that no professor in the physics department of Shenda could write such a calculation process.

This guy first established a relatively systematic mathematical model, analyzed the relationship between the position of the center of mass and time, and calculated the second derivative of time to obtain the acceleration, and used the center of mass motion to obtain the overall resultant external force.

But

It seems like we're only halfway there, not even halfway there.

Liu Yun'er wanted to know what kind of conclusion Lin Fan could draw from the change analysis, but it ended here... It's a pity.

"Gone?" Liu Yun'er raised her head and looked at Lin Fan.

"Hmm..."

"Because the results can only be analyzed through experimentation. Lin Fan shrugged his shoulders and said indifferently: "So the theoretical part can only go here." ”

“...”

"Do you want to continue?" asked Liu Yun'er.

"I don't want to. Lin Fan shook his head: "Too tired." ”

Liu Yun'er stared at the guy in front of her, and she couldn't do anything about it... While waiting for the food, this guy preliminarily analyzed the changes in the weight of quicksand with pure theory and mathematics, and this unbelievable ability is enough to find a top university to serve as a professor of science.

Outcome...

He became a librarian, or temporary.

Alas...

LIN Fan,

You're so hard to understand!

"Can this send me?" asked Liu Yun'er.

"Hmm. Lin Fan nodded, he was fiddling with the hourglass at this time.

“...”

"Okay, don't get it!" Liu Yun'er said helplessly: "We all know that as long as we pick the hourglass, we can speed up the time of the hourglass, but... How can you make an hourglass in front of a large audience? You are blind as a waiter?"

"I was thinking..."

"How to not rely on external influences to speed up the leakage of the hourglass in an enclosed space. Lin Fan frowned and said seriously.

Liu Yun'er's face was black, and she said angrily: "Are you going to die if you don't take advantage? It's about to be served, and I'm planning to fix some moths... If we get discovered, it's a shame, okay?"

"What do you mean by taking advantage?"

"It's called scientific research. Lin Fan said angrily.

Liu Yun'er no longer bothered with Lin Fan, originally this was just a whim, to spend a boring time, and she didn't plan to take advantage of other people's restaurants, even if she really found a way, she wouldn't use it.

Before Lin Fan could find the safest and most reliable way, the dishes he ordered began to be served, and at this time he also understood a truth, which was all the routine of the merchant.

In fact, the hourglass is quite precise, after all, it is a timer device made out of the physical structure, as for the acceleration of the hourglass...

No one would do that in real life.

But

Although the textbook uses this problem to aid in understanding momentum, the textbook does not take into account the upward and downward motion of the hourglass, so the textbook is flawed.

The textbook conclusion is that the apparent weight is equal to the resting weight in the steady flow phase, but this conclusion is difficult to establish.

When the two finished eating, they went directly to the high-speed rail station, but... There are still two hours to go.

Liu Yun'er slept too little and waited for too long for the bus, so a sense of drowsiness swept over her while sitting.

Unconsciously,

Liu Yun'er's head began to tilt towards Lin Fan's shoulder.

If she were the same as before, no matter how sleepy she was, she would not let sleepiness occupy all her consciousness, but when Lin Fan sat beside her, she had no past perseverance.

meanwhile

Lin Fan was playing a game, but his shoulders sank, and it seemed that something was leaning on.

glanced at it and found that it was Liu Yun'er.

In desperation,

Lin Fan silently quit the game, he was afraid that because of playing the game, his arm movements would be too large, which would affect Liu Yun'er's rest.

Gently turning his head sideways, he glanced at Liu Yun'er who was sleeping, and it was the first time to observe her at such a distance, I have to say... The skin is really tender, and it can almost pinch out the kind of tenderness that can pinch out the water.

In addition to tenderness,

All that's left is beauty.

Liu Yun'er's beauty is very natural, there is no abruptness at all, and any small change will destroy the most direct senses.

Then

Lin Fan began to think about his relationship with Liu Yun'er.

Quarrel, reconcile, quarrel, reconcile... It seems to be repeating the mistakes of the past all the time.

Also

Didn't he discover Liu Yun'er earlier than anyone else in this process?

"Hey..."

"I don't know how long the future holds, but it's not surprising... Probably for a lifetime. Lin Fan smiled helplessly and said to himself, "Alas... There's one thing you want to forgive me... It's not that I deliberately get angry with you, it's just that sometimes I just want to be bad to you, and I can't help but be bad to you. ”

But...

An hour later,

Lin Fan's spirit had a slight breakdown, an hour ago... He thought it might be called a gift, but after an hour, it should be called a sin.

My neck was already sore, my back was starting to hurt, and my arm was completely numb.

Become a ruthless sleeping machine.

This...

It's not as simple as grinding.

God, hurry up and take this big goblin, don't let her harm the world again.

Lin Fan wanted to cry without tears, but he couldn't bear to wake her up.

At this moment,

God seemed to sense Lin Fan's request, Liu Yun'er opened her eyes in a daze, and then found that she was asleep on Lin Fan's shoulder, so frightened that she hurriedly stepped back and looked at Lin Fan in horror.

"You..."

"You didn't do anything excessive, did you?" asked Liu Yun'er.

"I want to, too. ”

"But in broad daylight, there are still so many people..."Lin Fan said helplessly: "Give me ten dares not dare, in case more than 20 righteous strong men come out, then I will become an idiom... Sweating profusely. ”

Liu Yun'er rolled her eyes, subconsciously wiped the corners of her mouth, and found that it was actually a little wet, and hurriedly looked at Lin Fan's shoulder, and sure enough... An area is very dark in color.

He...

He shouldn't have found out, right?

Don't find out, don't find out, or else... Otherwise, how else would you be?

"Huh?"

"Why are you still drooling when you sleep?" Lin Fan asked curiously.

Oh, my God!

Sure enough, the bastard found out.

Liu Yun'er couldn't wait to find a crack in the ground and get into it directly, it was really embarrassing.

However, Liu Yun'er is also very strange, she has never drooled when she sleeps, how... Why this time... And it must have been?

"It's all your fault!" Liu Yun'er said angrily.

"It's not..."

"I..."

Lin Fan looked confused, and he unknowingly lived as Benzema.

subsequently

The two argued for a while, sat stunned for a while, and then set out on the journey home.

The time from Nanshi to Shenshi is very short, far shorter than the time of waiting for the bus.

To Shenshi high-speed rail station,

Liu Yun'er glanced at Lin Fan and said indifferently, "I'll go home." ”

"Oh. ”

"I almost forgot that you were from Shenshi. Lin Fan smiled and said, "Anyway, why don't you go home to live?

“...”

"I want you to take care of it!" Liu Yun'er pulled her suitcase and went to the taxi location without looking back.

...

When Liu Yun'er came home, it was almost seven o'clock in the evening, just in time for dinner, and Liu Zhongtao and his wife knew that their daughter was coming back today, so they prepared a table of meals in advance, especially Liu Zhongtao's wife, who turned down all the banquets.

It was Liu Zhongtao who opened the door, and when he opened the door, his first reaction was not to help his daughter with her luggage, but to look around, it seemed... I'm looking for someone.

“...”

"Came back alone?" asked Liu Zhongtao.

"Hmm. ”

"A person goes on a business trip and of course comes back alone. Liu Yun'er nodded and said indifferently: "Dad... Help me carry my suitcase. ”

"Good, good. ”

When the father and daughter walked into the house, a middle-aged woman walked out, and when she saw Liu Yun'er, she said with a smile on her face, "My daughter is back?"

Words fall,

Like Liu Zhongtao, he looked behind the father and daughter, and asked curiously, "Came back alone?"

Liu Yun'er didn't care about her parents' weird behavior, just nodded and said casually: "Mom... I'm so hungry right now, can I eat first?"

"Hurry!"

"It's been ready for a long time. ”

afterwards

The family of three sat together and ate a hearty dinner.

Liu Zhongtao and his wife did not lead the topic to Lin Fan, but simply chatted about family life, and the couple also knew that they were at a critical moment, and they should try to avoid embarrassing their daughter, otherwise all their efforts would be wasted.

"I went outside for a cigarette. Liu Zhongtao got up and was about to leave.

Then

Liu Yun'er frowned slightly, remembering that night, Lin Fan was smoky at the door of the bathroom, and suddenly complained a little about her father, just smoke by herself... also took Lin Fan to smoke together, that bastard didn't have many advantages, and now he smokes more.

"Dad!"

"You wait a minute. ”

"I need to talk to you... Right now, in front of my mother!"

......