"Tell me more about the principle of your holographic projection." The old principal greeted Chen Shen, and the two sat down on the stone bench where they were resting on the side of the road, asking with great interest.

As he spoke, he took out his glasses from his pocket and put them on so that he could better see Chen Shen.

Facing the old principal's eager eyes, Chen Shen smiled and explained the principle of technology without any worry.

"Actually, it's just a small trick, not an epoch-making technology."

He continued:

"At present, the common holographic projection is generally to use the holographic film to achieve 3D image projection, and the holographic film must be hidden by the live lighting in order not to be discovered by the audience."

"My holographic projection principle is through the principle of acoustic tweezers, that is, the technology of controlling the movement of small objects through sound waves, controlling thousands of tiny particles in the air, so that they form a frame of objects that need to be imaged in the air, and at the same time illuminate this frame with special light from different angles to form a complete three-dimensional image."

When the old principal heard this, he thought about it in his heart, and said in surprise: "This is not a little trick you said! ”

Not to mention how to control a large number of fine particles with acoustic tweezers and make them form a specific shape, it is also a big project to talk about how the light shows the correct color after hitting the frame formed by the particles.

"And how do you get the light to show the right color?" He hurriedly asked the doubts in his heart.

Chen Shen smiled: "The absorption of light by objects is selective, we can absorb specific light through particles controlled by acoustic tweezers, and each particle absorbs light differently, so that we can control these particles to control the color of the displayed image." ”

If you don't have too bright colors for the display image, the holographic projector can even control the sparse dust in the air for projection.

At the beginning, the holographic projection in the mecha, as well as the angular holographic projection, came from this, and the color of the two images was relatively single, and there was no high demand.

The old headmaster opened his mouth, not knowing how to describe this technique.

The delicate manipulation of particles with acoustic tweezers is not only a problem with the technical equipment, but also with programming and granular materials......

If it weren't for the fact that he had also seen the holograms on display at the angular press conference, and if the person sitting in front of him was not Chen Shen, the probability of his belief in this technology was almost zero.

Chen Shen relieved the old principal, and then discussed a few basic technical details with the old man.

Although the old principal did not have much knowledge of acoustics, he still had a general understanding of some basic assumptions.

The detailed and in-depth communication quickly dispelled his doubts completely.

It didn't take long for the two to talk about cooperation.

"Your technology is very mature now, there is no need to cooperate with us anymore." After listening to Chen Shen's narration, the old principal already understood that this was a mature technology, and there was no need for their school to mix it up at all.

This kind of cooperation is more like rubbing off on the results of the results, and he will not allow such things to happen under his nose.

Chen Shen shook his head and said, "Your idea is too ideal, if this technology has been fully matured, then I would have released this technology a long time ago." ”

He said with a wry smile: "There are still big problems with this technology. ”

"First of all, the current machine can only control 1,000 particles through acoustic tweezers, and the image projected with them is not only limited in size, but also in terms of color display and range."

"That's why the holograms you've seen before are all in the display case, because a machine can only project that large image."

The old headmaster asked, "Then why not string them together?" In this way, if each machine controls 1,000 particles, it should be easy to break through the limit. ”

When Chen Shen heard the old principal's simple thoughts, he suddenly felt that he had found a confidant.

However, it is not so easy to connect multiple projectors in series.

He replied, "At the moment I can only achieve a series of less than five machines, but this can only achieve an image about the size of a human." ”

"Going up the number of series, control programming is a key issue, and I'm usually very busy."

Chen Shen smiled, and the old principal immediately understood.

Programming here is not just about typing on a computer and writing code.

In addition to computers, programmers must also have a sufficient understanding of optics and acoustics in order to write a good enough control program.

It's just like a mecha, it's a proper interdisciplinary project.

The old headmaster nodded: "I understand." ”

"Uh-huh!" Chen Shen also smiled and nodded.

"You kid is just back to school looking for coolies!" The old headmaster was unceremonious, and a sentence pierced him.

"Ahem!" Chen Shen stopped the old principal's words, "This is scientific research cooperation, school-enterprise cooperation, where is the coolie?" ”

The old principal smiled: "Then according to what you said, it should be regarded as a school-enterprise cooperation." ”

"I'll ask the competent team at the school to see if they're willing to help you."

"Thank you so much."

"Let's go, take you to the school cafeteria again?"

"Forget it, I made an appointment with someone else." Chen Shen hurriedly took his leave.

To be honest, after getting used to the delicious meals in the base, his appetite has been raised, and he doesn't want to try it again.

"Okay, okay, if you have something, hurry up and get busy, and come back when you have time later."

The old headmaster waved his hand, and the two parted here.

After Chen Shen got into the car, he drove directly to the direction of the hotel.

His parents were waiting for him there.

The car quickly drove into the hotel parking lot, and the guards who followed him led him to his room.

And next door to his room was his parents' room.

He knocked on the door, and his mother immediately came to open it.

"Son, you're back!" The moment you open the door, it's an excited hug.

"My son's birthday has just passed, so there's no need to be so enthusiastic...... Dad said in the room.

"That's your ruthlessness! Your son has won such a big prize, you are not excited at all! Mom rolled her eyes and said.

"How can this be considered ruthless, I'm not used to it, and I didn't get excited for a while......"

"Okay, Mom, let's eat some fruit."

Chen Shen washed the fruit he bought on the road, put it on a plate and handed it to the second elder.

There are no specialties to bring back from the base, so I have to buy some fruit on the side of the road as a heart.

Of course, Chen's father and Chen's mother don't care about this, their son is already so angry, what else is there to care about?