Chapter 1065 Mechanical Genius: Gu Cheng's New Work
Splitting the industrial zone of Xingang County is equivalent to stabilizing from the early barbaric and disorderly rapid growth, which is more conducive to future expansion and development.
Luo Chong made detailed plans step by step for the expansion of the Han tribe.
At the same time, in the comprehensive research institute on the island in the middle of the lake far to the east of Liuyang County, a mechanical sound of "clicking" suddenly came from a laboratory, and then a cheer immediately broke out.
"It's amazing, Gu Cheng, you are worthy of being a mechanical genius in our Institute. You can make such a shutter. I think you are much better than those guys in the Institute 2 who can only build cars!" Ao Fei said excitedly while holding the new generation of off-axis camera that had just been assembled in his hand.
Gu Cheng, who was known as a mechanical genius, scratched his hair shyly and said embarrassedly, "Team Leader, if this shutter works, then I will go back and continue to work!"
Hearing Gu Cheng's words, Ao Fei immediately put down the new camera hanging around his neck, and he put his arm around Gu Cheng's shoulders and said.
"Don't worry, how long will it take to complete your second-generation mechanical clock? When the time comes, let's go and report to the leader. With this achievement, you should be promoted to the fourth-level Zhizuo title, right?"
Gu Cheng was still a little uncomfortable with Ao Fei's enthusiasm. He hummed shyly, "It's almost done. All the parts have been processed. Just give me a day to assemble it."
"Okay, then you hurry up, I will write a letter to the leader when the time comes." Ao Fei patted his shoulder and let the young man go, then continued to play with the new camera in his hand.
The so-called new camera is the off-axis camera designed by Ao Fei himself based on the reflection principle of the silver-coated glass mirror.
Compared with previous cameras, this off-axis camera has an additional viewfinder. The light path in the viewfinder and the light path of the lens are overlapped through a reflector. In this way, you don't have to open the lens first, put a piece of frosted glass in the back for framing, and then replace the frosted glass with film when shooting. Then close the lens again.
Don't think it's just adding a reflector and making an off-axis camera. This alone greatly improves the efficiency of taking pictures and saves a lot of trouble.
And its features are not only that. Ao Fei also asked Gu Cheng, a mechanical genius from the Comprehensive Research Institute, to design a mechanical shutter for him. Through the mechanical shutter, the exposure time of the film can be accurately controlled, thereby solving the disadvantages of the original manual exposure time instability.
In the old-fashioned cameras, the exposure of the film depends entirely on the photographer's experience to visually estimate the brightness of the environment, and the exposure time of the film depends entirely on manually controlling the opening and closing of the film darkbox.
It is because of this design defect that a problem finally arises. That is, even if the photos taken by the same person at the same location are slightly different in exposure time, the final film will have a huge difference.
Another reason is that the manual opening and closing of the dark box will inevitably cause shaking, resulting in the pictures being blurred. If you use a tripod placed on the ground to shoot in a fixed position, the effect of the film will be better.
In order to solve this problem, the two successfully made a five-page air shutter based on Ao Fei's idea and Gu Cheng's mechanical design. The
so-called air shutter is a light-transmitting door installed at the connection between the lens and the dark box (camera housing). It consists of five light-shielding thin plates that close toward the center of the circle. It is controlled by micro gears, springs and other mechanical devices. It can be closed toward the center in the circular light path formed by the lens, or it can be opened radially outward to expose the film in the dark box.
This five-page shutter is a button type, which is activated by a shutter button on the top of the camera. Below the button is a pneumatic piston. Pressing the piston can control the shutter to open through air pressure.
To put it simply, there is a glass needle tube under the shutter button, with a piston inside connected to the button. A rubber valve core is inserted at the other end of the needle tube, which is used as an air guide tube. This air guide tube is connected to the shutter, so the shutter is controlled by air pressure.
There are two advantages of this design. The first is that the original manual exposure is replaced by a mechanical shutter, which greatly stabilizes the exposure time, so that the impact of the original unstable exposure time on the film effect can be reduced; the second advantage is that the shutter is opened by the air pressure button, which can minimize the shaking caused by the original manual operation of opening and closing the film mask, and the photos taken with this shutter will basically not be blurred.
Another most important advantage is that this air pressure shutter button can also extend the shutter control system outward by adding accessories, such as connecting a several-meter-long air guide tube to the shutter piston, and installing a rubber ball at the end of the air guide tube.
In this way, the photographer can first find a good position for the camera, take a good view, stand in front of the camera with a rubber ball with an air guide tube, and expose the camera by squeezing the rubber ball. This operation is usually called a selfie!
That's right, it's a selfie. Before this kind of shutter, photographers couldn't control the camera remotely, and there was no rear lens, so the so-called selfie was naturally impossible to achieve, but now there is no problem.
This kind of selfie function is not for conceit or anything, but is used in some specific environments. For example, if there are only two people around, and the two people want to take a photo together, and there is no third person to help take the photo, the two people can use the external shutter button to take a photo of themselves.
The combination of off-axis camera and pneumatic shutter can be said that the camera of the Han tribe has developed extremely rapidly. Except for the lack of suitable film substrate and color developer, there is no difference from the old film camera.
The only trouble is that this kind of camera still uses a negative film composed of glass and gelatin. The rest is already very advanced overall.
If the Han tribe can get the film and aluminum alloy materials, then even if Luo Chong imitates a Leica, it will probably be no problem.
However, all this is not the credit of Ao Fei alone. If it weren't for Gu Cheng, the mechanical genius, Ao Fei probably wouldn't be able to make a suitable shutter even if he was given another ten years.
Gu Cheng is only seventeen years old this year, and he is not very old, but his attainments in mechanics are second to none. Even in the two research institutes of the entire Han tribe, he is a well-known existence. This is probably the legendary talent.
From the mechanical clock and platform scale invented by Gu Cheng before, it can be seen that this person's attainments in micro-mechanics are simply to the point of self-learning.
Since the last time he presented the mechanical clock to Luo Chong, Gu Cheng came back and began to busy himself with the transformation of the second-generation mechanical clock. In addition to some tasks that must be completed by the institute, Gu Cheng has been concentrating on the development of the second-generation mechanical clock in the remaining private research time. Now he has finally achieved gratifying results.
The original first generation of mechanical clocks was a large table clock. A sundial was installed on the clock face, showing the twelve-hour system, with only two hands, the hour hand and the minute hand, and no second hand.
The power used was the elastic power of the spring, and an external crank was used to wind the mechanical clock. Each time it was wound up, it could keep turning for four or five days. As long as the spring was wound up again within four or five days, the mechanical clock could keep turning forever.
Based on the experience of developing the first generation of mechanical clocks, Gu Cheng has found the direction of improvement. The first is to solve the power problem. What method can be used to make the clock keep turning forever without human power to wind the clock? This is a big problem.
Because if you forget to wind it up, the clock will stop, and it will be troublesome to readjust the time at that time, and you have to watch the sundial and re-calibrate it.
In view of this purpose, Gu Cheng suddenly came up with the idea of using the gravity pendulum on the clock, and using the dual power of the pendulum and the spring to solve the power problem of the mechanical clock.
The pendulum of a clock swings back and forth under the influence of gravity and the law of swinging. The swing compresses the mainspring, which winds it up. At the same time, the pendulum will gradually reduce the amplitude of the swing due to the influence of resistance. At this time, the elastic potential energy of the mainspring can be used to accelerate the pendulum, so that the two complement each other and become a combined perpetual motion machine.
In fact, it is not accurate to say that there is a perpetual motion machine. In fact, even in modern times, there is no such thing as a perpetual motion machine. If we only talk about the pendulum, it will stop swinging sooner or later due to the influence of resistance and gradually return to calm, so the pendulum is not a perpetual motion machine; if we only talk about the mainspring, the mainspring will sooner or later produce metal fatigue, thereby losing elasticity and power.
So neither of them is a perpetual motion machine, and when the two are assembled together, it becomes a perpetual motion machine in another sense. The pendulum is used to compress the mainspring to generate elastic potential energy, and the elastic potential energy is used to accelerate the pendulum to make it swing all the time, which perfectly solves the problem.
On the other hand, Gu Cheng also ingeniously added a minute repeater function to the second-generation mechanical clock. The so-called minute repeater function is to display the time, quarter and minute through sound, and can also tell the time at a fixed point, but it cannot be accurate to the minute for the time being. It can only be set on the hour, half an hour, and a quarter . When the time comes, the mechanical clock will automatically make a sound. The minute repeater function is
a very classic function, which is generally used by the visually impaired, that is, the blind. How do blind people read the watch? Use this function. When the user wants to know the specific time, he can press the minute repeater button. For example, at 3:47 pm, the mechanical clock will sound ding ding ding ding. Ding dang ding dang ding dang dang dang. Ding ding ding ding dang ... This is a very practical and also very tricky function, which tests the user's hearing and arithmetic ability. But this timekeeping function is really cool, and most people can't make it even if you want it. If it were in Luo Chong's previous life, the price of a mechanical watch with a minute repeater function would be hundreds of millions, which is really too expensive. Especially in the field of mechanical watches, there has always been an eternal truth, that is, the more complex the function, the greater the value of the watch. (End of this chapter)
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