Into Unscientific

Balance spring, this is actually a compound word.

In terms of function, it is actually divided into two concepts: balance wheel and hairspring.

In the 21st century.

The hairspring has been optimized to the limit, becoming a rather thin helical spring, 99.9% of which is used in mechanical watches.

It is about 3 to 4 times thinner than human hair, with a total weight of about 2mg, but it can withstand a tension of 600g, and its toughness is quite strong.

In clocks and watches, the inner end of the hairspring is fixed to the axis of the balance wheel, and the outer end is fixed to the balance cock.

When the balance wheel is driven, the hairspring fixed in the balance wheel will shrink and relax evenly due to elasticity, and at the same time drive the balance wheel to swing back and forth.

The balance wheel is driven by force to compress and expand the hairspring, which drives the balance wheel to rotate clockwise or counterclockwise.

Such a rotation period will directly affect the accuracy of the watch's travel time, thereby calibrating the time.

In fact, the balance spring can be used in a wide range of fields.

Because it has an important relationship with clockwork:

The power released by the mainspring is transmitted to the escapement system, which drives the balance with hairspring to perform simple harmonic motion, generating a reaction force to achieve the purpose of deceleration.

However, with the development of science and technology, the relationship between the balance spring and the mainspring has gradually cracked, or the balance spring has been ntr:

Ordinary springs do not require such precise motion correction, and advanced springs have other means to achieve more precise effects without the need for a balance spring.

Therefore, after going back and forth, the balance spring and spring can only be seen in mechanical watches.

However, who can think of it.

In the era of the Northern Song Dynasty, Xu Yun actually saw a set of equipment consisting of a balance spring?

Of course.

The balance spring here is definitely not as fine as later generations, mainly to play a role in connecting the internal links.

It's a coincidence.

While Xu Yun was observing the device, there was a rapid clicking sound inside the device—this sound sounded like the bucket was thrown down the mouth of the well when fetching water, and the rope on the cradle of the windlass was quickly thrown away. Extracted situation.

Then there was a rushing sound of running water from the bottom of the device.

It is clear.

In the main room, Old Su was washing with water.

A few more seconds passed.

The sound stops.

During this process, the rope pulled out by the millstone was not affected, and was still being dragged outward.

It's come to this point.

There was no need to disassemble the device for a closer look, Xu Yun already understood everything.

The cost of this water delivery device in Su Mansion may not be high, but the technical level contained in the whole link is extraordinary!

This is a sophisticated, interconnected planar water supply system:

The entire pipeline is about 100 meters long and is laid under the ground.

The material of the pipe is unknown, it may be stone or metal.

Every day, the servants test the water in front of the big maid to confirm that it is not poisonous, and then pour the pre-drilled well water through the stone pillars.

Because of the height of the stone pillars, the gravitational potential energy is initially converted to some kinetic energy—some of which is disabled in the collision, allowing the well water to flow forward.

About ten meters in front of the entrance, a self-priming pump was installed.

This self-priming pump was actually not operated at the beginning, and simply blocked the water to one side.

at the same time.

On the ground, a donkey is constantly pulling the millstone, and the bottom of the millstone has been modified to drive the rope.

The starting point of the rope is on the other side outside the courtyard, and the length may be twenty meters, maybe thirty meters.

Xu Yun couldn't guess the exact length, only that it passed through the ground facilities like a needle and connected to the millstone.

As the donkey began to pull the millstone, the rope was reeled in like a kite reel.

The traction of the rope drives the accumulation of springs in the device. There may also be several of these springs, and the balance spring is responsible for the calibration.

When one clockwork is fully charged, the next one will continue to charge until it is fully charged.

When the main room or the west wing needs water, you only need to press and hold the switch and twist it slightly.

The mainspring will convert the full elastic potential energy into kinetic energy, instantly providing enough power for the self-priming pump to operate.

This is why the diameter of the pipe can be as thick as thirty centimeters:

One is to store water and avoid repeated perfusion within a day.

The second is to prevent the tiny pipes from bursting due to the inability to bear the instantaneous stamping pressure.

"Flywheel. Self-priming pump. Balance spring with spring"

Looking at this set of rigorously operating equipment, Xu Yun slowly stood up from the ground with shock in his eyes.

Although from his perspective, there are still many places for improvement in this equipment:

For example, the potential energy conversion efficiency of well water is not high at the beginning, and the stone pillars can be adjusted to tilt.

Another example is that the rope can be changed into a flat type similar to that of fish to increase friction and energy storage, although the donkey will be more tired in this way

But don't forget.

Xu Yun is a modern person.

Looking at the science and technology of the Northern Song Dynasty from a modern perspective is the same as using a 22-year reading perspective to spray the poisonous early online books such as "Panlong" and "Doupo", which is completely meaningless.

Judging from the current level of science and technology, this set of old Su's device can undoubtedly be regarded as a peak-level scientific and technological achievement.

Although it is not clear how fine the internal structure is, Xu Yun can guarantee that it will be at least four hundred years ahead of the West.

Four hundred years later, it was only the 16th century, and the West at that time had not yet reached the point where science and technology were advancing by leaps and bounds.

Think here.

Xu Yun raised his head subconsciously and looked towards the sky.

Guang Laosu, this temporary residence in Bianjing, can still see such an exquisite water supply device.

So this dynasty that died suddenly because of the Jin people is not, or in the five thousand years of Chinese history.

How much wisdom of the ancestors has been buried in the long river of time?

one?

ten?

Or thousands?

I'm afraid no one can give an accurate figure.

at the same time.

Xu Yun's interest in Lao Su also suddenly became much stronger.

Although Lao Su had many inventions and creations in history, unlike Mavericks, Mavericks was considered to be in the 17th century at that time, and a lot of various materials and even handwritten manuscripts were left behind.

The world's cognition of Mavericks is relatively clear, detailed and authoritative.

Everyone knows Maverick's personality, and Xu Yun also knows how to start to arouse his interest.

But Lao Su was different.

1100 is a full nine hundred years away from now. In addition to the sudden death of the Northern Song Dynasty, a large number of ancient books were lost.

Therefore, Xu Yun and later generations do not have a very intuitive understanding of Su Song's ability and character.

In fact, not only Su Song, but also many famous scientists in ancient times.

For example, Zu Chongzhi in the Southern and Northern Dynasties, some sunspots even believed that he copied the achievements of others:

He has a person who looks like young general Qu Ah under his command, and Zu Chongzhi relied on this person to obtain the "Daming Calendar".

As for you to ask about his name and basis, these people will reply to you with the sentence "The information was destroyed by Zu Chongzhi, so you can't find this person."

I don't know what grudges those people have, and they insist on pouring dirty water on some sages.

Then Xu Yun shook his head and turned his mind back to reality.

Look at this still rattling device.

He suddenly thought of something, and there was an uncontrollable smile on his mouth:

Having said that, in the local history, the inventor of the balance spring is also an old acquaintance.

he is called

Robert, Hooker.

Note:

Considering that some readers may have objections, let me explain that it is now recognized that the hairspring invented by Hooke in 1664 has been overturned at the Swedish CBT conference in 2009.

Huygens is currently in the Chronicle of Physics course at Oxford University, where the definition of a hairspring is a corrected spiral hairspring, which is accessible on the university library computer.