When the others heard about it, they also came over to watch the excitement.

When it was confirmed, the crowd exclaimed again.

The ability to see planets from the observation hole means that the camera can take pictures of distant planets.

These people invited Qian Liyi to go up and watch.

Qian Liyi lifted her dress lightly, stepped on the base of the wooden table more than one meter high, and stood under the camera observation hole.

She took a closer look, but she didn't look particularly surprised.

After watching it for a while, he nodded and said, "Well, it's quite clear." ”

His expression was not at all as excited as the person just now, as if everything was expected.

The people next to her began to ask questions around her, and after a while, Qian Liyi seemed to whisper to herself: "I've seen it before." ”

Her voice was quickly drowned out by the cacophony of human voices, but Zhu Xiaohua could hear it clearly.

Zhu Xiaohua thought that the girl in front of her was well-informed, and she had even seen enlarged images of planets that most people had never seen, so it was normal not to be as surprised as others.

In the next two days, the construction progress of the camera accelerated, and the speed visible to the naked eye increased little by little.

The rudiments of a camera are gradually revealed.

In the evening of the same day, the construction of the camera was completed, and only a black hole remained on the fuselage.

That's the reserved shutter button.

The shutter of a snap-and-shoot camera is different from that of a regular camera, and its shutter is connected to exposure and printing. At the moment of pressing the shutter, it is necessary not only to freeze and expose the photo, but also to prompt the photosensitive negative to start developing the photo, completing a series of chemical reactions.

It's another key to the whole shoot-and-shoot camera.

A simple button with an extremely complex and ingenious mechanical principle behind it.

This is only now the beginning of this, and the three students of Zhu Xiaohua and Professor Shao are just beginning to tackle this most difficult problem.

Zhu Xiaohua and the student in charge of mechanical design laid out the required mechanical components and operated them little by little according to the drawings.

The mechanical components were designed by Professor Shao's students, and Zhu Xiaohua commissioned them to a precision instrument component manufacturing unit in Los Angeles. It took half a month of hard work to produce it all.

Soon the mechanical components were installed according to the drawings, and things went unexpectedly smoothly.

Watching hundreds of strangely shaped parts and components of different shapes being inserted into the giant camera, Zhu Xiaohua felt that he had never been satisfied.

While he was happily awaiting the results, one of the students suddenly said, "Ouch, where should I put the paper?" ”

At this time, Zhu Xiaohua discovered a problem, the position of the photo paper needs to be reserved in these mechanical parts.

Since he did not know the size and thickness of the photographic paper in advance, Professor Shao deliberately left a blank space in this area. These people only look at the drawings and don't know what to do, and they have already occupied the blank space inside.

Zhu Xiaohua was secretly amused, thinking, no wonder the installation went so smoothly, it turned out that the problem of developing photo paper was not considered at all in the current installation.

If you add developing photo paper, I'm afraid it won't be so easy to install.

Zhu Xiaohua had to ask them to dismantle all the subtle parts and install only a general frame.

For subtleties, you need to wait for the disposable developing paper to come out before it can be installed.

These small parts are movable parts that can be flexibly adjusted according to the thickness, length, and width of the paper.

The parts and disposable developing paper need to work perfectly together in order for the shutter button to do its true job.

So, what kind of photographic paper is the best and most suitable?

Zhu Xiaohua fell into deep thought, he and Professor Shao had been discussing for many days and nights, and they had already come up with a forming plan, but Professor Shao was always not satisfied.

Professor Shao led the invention of Los Angeles No. 1 and Los Angeles No. 2 photo paper, so he had the most right to speak, and Zhu Xiaohua was inconvenient to refute.

However, since then, the progress of the project has been delayed again.

Everyone stopped and waited for the paper to be in place.

The student in front of the leader stood in front of the dense body of parts and said, "If only the photo paper was in place." With the paper in place, our giant shot is ready to go. ”

The other two students gathered together the remaining parts and handed them to Zhu Xiaohua.

Zhu Xiaohua put the parts in the corner of the wooden table and took out two pieces of disposable developing paper.

These are two experimental developing papers, provided by Professor Shao's students. The paper is slightly thicker than regular photo paper, and on the back of the paper is a thin plastic bag filled with brown potions.

These potions are used for fixing and developing.

To put it simply, it is to concentrate the photographic paper, fixer, and developer into a single sheet of paper.

Will this rudimentary disposable developing paper be effective?

Zhu Xiaohua immediately began to measure the size and make the developing paper according to the enlarged size.

Raw materials such as photographic paper and potions have been prepared for a long time. Professor Shao provided a large amount of photographic paper and potions, each in a different box and medicine bottle, which was now placed in the open space at the foot of the giant camera.

This raw material is provided by Professor Shao's laboratory.

The photo paper of the giant camera is about one meter wide and about one meter eight long, and Zhu Xiaohua cut out two of them and spread them on the table.

The students put the potion in bags according to the size of the paper. The bag is a thin layer of plastic paper, transparent, and can be broken with a slight poke.

The students were careful when loading the potion, and when the potion was more than half filled, the bag was still broken and the potion was spilled back into the bottle. A few drops of brown potion spilled out, dripping onto the paper, quickly swelling into a white powder.

Zhu Xiaohua felt that it was not good to dress vertically, the bag was too thin, and the weight of the potion was too heavy, so he couldn't afford it at all.

He found a plastic straw and stuck it to the corner of the plastic bag, sealing the rest of the place. In this way, the giant plastic bag is no longer just a plastic bag, but more like a container that absorbs water.

Zhu Xiaohua found glue and applied a layer of plastic bags and wide photo paper. Applying dehydration is a technical task, which requires extreme finesse and cannot be applied too thickly, because it is easy to affect the chemical reaction between the chemical solution and the photo paper.

And it can't be applied too thinly, because it is easy to fall off if it is not firmly adhered to.

Zhu Xiaohua handed over the work of applying glue and photographic paper to one of the students. This student has operated countless times in Professor Shao's laboratory, and he is measured, knowledgeable, and experienced.

I saw that the student found a brush, dipped it in glue, brushed it from one end to the end of the paper, and then brushed it a second time next to each other. The initial force is very light, and when the glue is almost exhausted, the force is extremely heavy, so that after brushing out, the head and tail of the photo paper are as even.

The rest of the group saw that the student was skillful and evenly spread, but began to reload the potion.

They dipped the straw in the corner of the plastic bag into the potion, pinched the straw, prepared to suck the potion, and said, "Put the straw in the corner of the plastic bag and seal the plastic bag, so that it will be much easier to absorb the potion." And it's not easy to break the bag. ”