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

"No, Lian Hai! You...what are you talking about?"

This time, it was Anna's turn to be confused.

She found that several people who were originally in despair were now full of energy.

But since everyone was communicating in Chinese, she was extremely confused.

As a boyfriend, Zhang Lianhai naturally has the obligation to answer questions for his future wife.

He smiled, bared his teeth and said in English:

"Anna! Hey, to put it bluntly, this is pinhole imaging!"

Pinhole imaging?

Anna and Song Xiaocheng were stunned when they heard this.

"That's right, it's pinhole imaging! It's just right, let me give Brother Xiaocheng some knowledge about it..."

Zhang Lianhai continued talking without stopping.

"Brother Xiaocheng! Didn't your sister ask you, what is the imaging principle of the human eye?"

"Let me tell you, it uses a concept in physics about light, which is pinhole imaging."

"First, we need to clarify a concept... that is, light travels in a straight line! This is an indisputable fact."

"When light reflected from an object enters our eyes in a straight line, it passes through the cornea of ​​our eyes and finally falls on the lens."

"The lens is curved and forms an image on the retina, the very back of the eye."

"The photoreceptor cells in the retina convert this image into electromagnetic impulses that are input into our brain."

"Our brains then process the world through complex calculations, and ultimately present the world to us as it really is."

"That's how we can see the world clearly, and that's why cameras and video cameras can work for us..."

hiss!

Song Xiaocheng took a deep breath.

Depend on!

I don’t understand it at all!

However, I really like the feeling of this kind of knowledge entering my brain and then disappearing without leaving any trace.

But he couldn't understand. Anna, as a top student at Imperial College London, naturally heard it clearly.

The girl also showed ecstasy on her face.

Pinhole imaging!

Yup!

The current layout of this room is based on the most classic pinhole imaging principle.

Sure enough, only physics can summon the gods to turn the holes in the iron gate into our eyes, allowing us to see everything outside clearly.

The key to achieving this is...

Let Room B be in darkness, so that when light can penetrate in, it will be reflected in front of us without any obstruction.

Because light travels in straight lines.

When the room is dark, we will see the scene outside.

Anna turned around excitedly.

"Stop talking nonsense, Lian Hai! Quick! Find a rock and smash that damn lamp above your head."

Seeing Lian Hai still patiently explaining to Song Xiaocheng, Wang Luxiang shouted anxiously.

Because he looked around but couldn't find any switches in the room.

What switch?

Of course, it was the weird big light switch on the ceiling.

It was already very dazzling, illuminating the entire room as bright as day, and at this moment it became the key to breaking the deadlock.

"Do you still need Lian Hai'er? Haha, watch me!"

Upon hearing this, Song Xiaocheng picked up a stone from the ground and raised his hand to smash the headlight.

“Stop… stop it!”

Unexpectedly, the stone was stopped by Su Ming before it was thrown.

Song Xiaocheng looked at him in confusion: "Brother, you were the one who came up with the idea of ​​classical Chinese, and you were the one who proposed pinhole imaging, so what's wrong with that?"

Although Song Xiaocheng had never seen what pinhole imaging was, he now roughly understood the principle.

As long as we keep the room dark, can the light from outside shine directly in?

As for what would happen after he ejaculated, he had no idea.

Su Ming snatched the stone from Song Xiaocheng's hand and wiped the cold sweat from his face.

This was my only chance of survival, and it almost all went to waste.

Seeing that Wang Luxiang and Lian Haier were still somewhat puzzled by his action of stopping the lamp from being smashed, Su Ming quickly said:

"Didn't you notice? The organizer deliberately installed this strange lamp on the ceiling. Isn't it to remind us that it is a ..."

Several people looked up and exclaimed as they saw that the lamp looked increasingly familiar.

"searchlight!"

"Yes, it's a searchlight!"

Su Ming grinned: "It could be a searchlight, or it could be a convex high beam light that is often installed on cars. It has the function of radiating light..."

"so what?"

Song Xiaocheng asked doubtfully: "What does this have to do with pinhole imaging?"

Su Ming smiled and said, "Of course it does matter, Brother Xiaocheng!"

"Relying solely on the principle of pinhole imaging, we can only see a blurry picture because the light cannot be focused into a true image, and we cannot find out the total number of lions."

"It would be different if there was a searchlight cover or a high beam cover to help."

"Why is it different?"

Song Xiaocheng worked tirelessly, but Su Ming obviously had no time to explain anything to him.

Time is precious!

He looked up at the display screen on the wall. There were a little over eight minutes left before the thirty-minute deadline, and only two minutes left before the fifth and final call.

There can be no further delay.

Once the last call opportunity is missed, all the players in the rooms except Room B may die.

"Come on, Lian Haier, Lu Xiang, lift me up..."

He threw away the stone, waved to the two men to lift him up, and put his legs in their arms, lifting him to a height of more than one meter.

Su Ming was not short in height to begin with, and with this one on, he was already tall enough to touch the ceiling above his head.

He carefully removed the lampshade, shaking with nervousness.

This made Song Xiaocheng roll his eyes. Seeing that no one explained the physics principles to him, he could not help but move closer to his sister Song Xiaoxuan.

"Um...sister, why...why is this lampshade so important."

Song Xiaoxuan was also in anticipation and excitement, and smiled when she heard this.

"Brother, I asked you to learn more but you didn't! Then let me ask you, why are the eyeballs of us humans or most animals round?"

"The lenses of mobile phones, cameras, and video recorders are also designed to be round. What is the purpose of this?"

"Um... this... well, I don't know."

Song Xiaocheng shook his head decisively, his face full of childish innocence and purity.

Song Xiaoxuan was speechless for a while, and Anna next to her took over the conversation.

"Brother Xiaocheng, it's because of the convex lens!"

"Lenses are generally divided into three types: plane mirrors, concave lenses and convex lenses. I won't talk about plane mirrors, but only about the latter two types. People design them into curved shapes to achieve different effects."

"Concave lenses can focus light, allowing people to see things more clearly. For example, myopia glasses are the most classic concave lenses."

"Convex lenses can diffuse light, spreading it evenly so that people can see farther. For example, microscopes, telescopes, reading glasses, searchlights, high beams, etc. all require convex lenses."

"Since we want to realize the principle of pinhole imaging, we naturally have to use a convex lens. Otherwise, even if we break this headlight, we still won't be able to see anything clearly!"

"Oh……"

Song Xiaocheng couldn't help but stretch out his voice.

He exclaimed, though still dazed.

"So, the organizers had already thought of this and deliberately installed a searchlight on the ceiling?"

"Damn! I was wondering who would use such a weird lamp, it turns out it already has a function."

"That's right!"

Song Xiaoxuan clenched her fists excitedly.

"Brother! Since the organizer left this method and applied the physics knowledge of pinhole imaging, the convexity and transmittance of this removed lampshade must meet our requirements, and the distance from the pinhole to the wall must also be appropriate. In other words, the organizer will let us see everything outside clearly."

As he spoke, Su Ming had completely removed the lampshade, revealing the headlight inside.

He suppressed his excitement, held the lampshade in both hands, slowly walked to the iron gate, and placed the lampshade on the hole to cover it completely.

A miracle was about to happen, and the others were even more excited.

Zhang Lianhai picked up the stone from the ground again and asked in a trembling voice: "Well, everyone! I... I'll start smashing it!"

No one objected anymore, only the sound of nervous heartbeats rang in their ears.

Bang!

Zhang Lianhai smashed the overhead headlight accurately.

Due to the lack of windows, the entire room was instantly plunged into darkness.

The next second, a beam of light penetrated through the hole from the outside.

It hits the convex lens, is dispersed into countless rays of light, and finally projected onto the wall opposite!

At this moment, a miracle happened!