How did you, a prisoner on death row, become an important weapon of the country? Yecheng Gao Weiming

Anna, do you have any way to get the platinum ring safely?

How can this be?

The molten steel is at a high temperature of 1700°.

The rules also stipulate that no tools are allowed and the fish can only be fished out with bare hands.

Besides, even with the help of tools, there is nothing at the scene!

How to do it?

Facing the fiery gazes of the three people, Anna's face turned red instantly.

She lowered her head, pursed her lips, thought about her thoughts again, and mustered up the courage to look up.

"It's the Leidenfrost effect!"

"Everyone, have you forgotten the Leidenfrost effect that we learned about in high school physics?"

boom!

When Anna said this, Zhang Lianhai, Yao Fei, and Huang Feifeng's heads exploded.

Yup!

How could we have forgotten this stuff.

What is the Leidenfrost Effect?

In 1756, there was a German doctor named Leidenfrost. While he was cooking, he accidentally dropped water into a red-hot iron pot.

A magical scene happened.

The water did not vaporize and boil immediately, but turned into small water droplets that rolled and moved in the pot.

Leidenfrost was greatly amazed by this phenomenon and studied it in depth.

Finally, an academic paper was published in the same year, pointing out that when liquid drops onto a surface with a temperature far exceeding its boiling point, a steam layer that isolates the liquid from the ultra-high temperature surface will instantly form, thus preventing the liquid from undergoing a vaporization reaction.

Of course, this vapor insulation is not permanent and will slowly disappear over time.

Once the conclusion was proposed, it caused a sensation in the scientific community. After being confirmed by many experiments, the physics community named this reaction the Leidenfrost effect!

It was found that it is not completely useless. Many scientific research and military scenarios can be used to improve or suppress the occurrence of this phenomenon.

So what does this phenomenon look like when applied to real-life scenarios?

Without mentioning complex scientific experiments, let’s just talk about the simplest application scenarios.

When a chef is cooking, he can drop a few drops of water into the pot to observe whether it is hot.

If the Leidenfrost effect occurs, it proves that the temperature in the pot is extremely high.

Similarly, the production process of fried chicken, French fries, and candied haws that people often eat all applies this effect.

Let me put it in simpler terms.

The reason why the brave warriors of the Lisu and Yao ethnic groups in Yunnan Province can walk barefoot across blazing charcoal is not because of the thick calluses on the soles of their feet, but because they take advantage of this effect.

All you have to do is get your feet wet with water during the performance and this miraculous spell will appear.

So once Anna brought it up, everyone suddenly understood.

It’s not that I didn’t know, it’s just that I didn’t expect it!

Anna has continued to speak.

"Friends, did you see that? Next to that big ceramic jar, there is a watering can device."

"It's filled with transparent liquid. I don't think the organizers put alcohol or something like that in it. It should be water."

"According to the formula derived from the Leidenfrost effect, we can estimate the depth of the pool and the cross-sectional area of ​​our arm and calculate the amount of water to apply."

"As long as we have enough courage, when the platinum ring falls into the ceramic jar, we can immediately reach out and take it out. We shouldn't get hurt!"

"It's just that I remember that the melting point of platinum is 1735 degrees Celsius, and the organizer told us that the temperature of molten steel is 1700 degrees Celsius. We have to move fast enough. If we hesitate for a few seconds, the platinum ring may melt."

"Even if we take it out again, we may still fail..."

As soon as Anna finished speaking, Huang Feifeng's face was already full of excitement.

"That's enough! Anna, that's enough time!"

"I checked. The jar is about one meter deep. The normal arm length is 65-75 centimeters. If I put half an arm in, it would take less than a second to pick up the ring..."

“Also, we don’t have to wait for it to completely fall to the bottom of the tank, we can just scoop it out halfway.”

With the breakthrough, Huang Feifeng finally relaxed and looked at his girlfriend Yao Fei excitedly.

It seemed that both of them had successfully completed the challenge. They looked into each other's eyes and then hugged each other.

"Fifi!"

"Fei Feng!"

"Forehead……"

Zhang Lianhai, who was standing by, turned green in the face.

Depend on!

It turns out that if you learn math, physics and chemistry well, you won’t be afraid to travel around the world.

Although this is the truth, who knows if it can be successful in practice?

just in case……

Let’s just say, just in case…

A healthy arm was put in, and only bones were left when it was taken out.

Who can bear this kind of pain?

He couldn't help but curse Song Xiaocheng again for giving him such a challenge that didn't look safe at all and was actually extremely dangerous.

But if he knew.

The Spade Ace challenge is to bungee jump from a height of 100 meters and escape from the mouth of a crocodile. I don’t know how it feels.

If you compare the two, perhaps the Ace of Clubs is safer.

"Okay! Let's... let's do it this way! Time is limited, let's get started as soon as possible."

"Remember, once this starts, both parties will only have ten minutes in total."

Huang Fei Feng let go of his girlfriend Yao Fei, smiled again, and asked everyone to choose their own challenge device.

After saying that, he took Yao Fei to the nearest device.

Anna looked at the two of them, then looked at Zhang Lianhai who was still standing there, and asked weakly.

"Um... sir, are you...are you scared? Or, you go climb the ladder and I'll retrieve the ring?"

Ok?

Upon hearing this, Zhang Lianhai turned his head away, filled with resentment.

"Haha, I'm scared?"

"Anna, am I fucking scared?"

"Are you kidding me? How could I be...scared?"

Anna said speechlessly: "Then why are you trembling?"

The girl looked at Zhang Lianhai's legs trembling slightly and asked puzzledly.

"Ah...haha, sister, I have to pee urgently, okay? Let's go, let's do the challenge quickly. After the challenge, I have to go back to the hall to use the toilet."

With a beautiful woman next to you, no matter how timid you are, you can't show it.

Seeing that Huang Feifeng and Yao Fei had already chosen a device and stood there, he hurriedly led Anna to the side.

Anna followed behind and couldn't help but smile.

What a stubborn Dragon Country man.

The commotion here naturally attracted the attention of several other groups of people in the venue.

Everyone turned to look, with a look of surprise on their faces.

There are seven groups in total, and two of them are already starting the challenge?

Have you thought of a way to challenge it?

But we are still discussing how to climb up this damn ladder of knives and reach our hands into this boiling molten steel.

Everyone watched intently, just wanting to see how they would commit suicide.

This made Zhang Lianhai, who had just walked in front of the device, curse inwardly.

Depend on!

If I wasn't kind-hearted, I would never take the initiative to challenge you, even if you kill me.

You have to wait until there are only ten minutes left before you proceed.

Anyone can understand the principle behind the method we have developed after just one look. Isn't that giving it away for free?

But he was not a dark-minded person after all, so how could he bear to see others commit suicide?

"Anna, let's... get started?"

Zhang Lianhai looked at the large ceramic tank in front of him and the boiling molten steel inside, and his calves cramped.

But he still suppressed his fear, took off his short-sleeved shirt, and planned to take the platinum ring first.

Unexpectedly, Anna had already taken off her shoes, thrown away the backpack on her back, and walked over barefoot.

"Sir, let me...let me challenge you first!"

"If I succeed, you won't be eliminated..."

Ok?

Zhang Lianhai turned his head and was stunned when he heard Anna's words.