Yonglong eight years.

Luoyang.

Obviously, Zhang Sui became famous.

How to say this situation, even the neighbors who live next door, after knowing about it, couldn't help but exaggerate to Zhang Sui's aunt when they had a chance encounter.

Of course!

If it were just ordinary people, then of course it would be impossible to care about this.

Those who care about this must still have a certain identity background.

And then......

Zhang Sui, who is the ancestor, was quickly doxxed by the melon-eating masses.

All I can say is......

No wonder!

This is the descendant of the Zhang family!

In fact......

Zhang Sui said that he was Zhang Gongjin's great-grandson, but in fact, he had to add the word 'from'.

That is, 'from the great-grandson'.

In other words, in fact, Zhang Sui and Zhang Gongjin have already been out of the range of five suits.

The reason why I say this......

Then I have to mention that Li Chong will never be nepotistic.

This is not!

Some people have to wonder if there is cronyism in this matter.

However, in fact......

This conjecture was quickly shattered.

Because if Li Chong really wants to be nepotistic, it must also be nepotism for Zhang Gongjin's descendants.

And Zhang Sui and Zhang Gongjin, in fact, at most, have a little relationship, but this relationship is not big.

The real reason why Zhang Sui's name can be written in front of Li Chong is that cough!

All I can say is......

When others asked about Zhang Sui.

Zhang Sui was also a little confused.

But among the Guozi Prison, some people are indeed curious about the relationship between Zhang Sui and Li Chong.

After all......

This can't be!

Why don't other people Li Chong contact you, but they want to contact a boy like you who is only fifteen or sixteen years old.

You don't know, you want to see Li Chong, and the people who have been approved by Li Chong, that is not too many.

Of course!

Because Li Chong used to say every time he followed him, don't want to be an official.

Therefore, this is the first thing that dissuades a lot of people.

And then......

There are still some who dare not ask questions.

The rest, in fact, there are also those who dare to ask questions, especially the craftsmen in the Academy of Sciences.

But the question is......

To be honest, Li Chong didn't have much research, and it was useless for you to ask Li Chong.

This has also led to the fact that there are fewer and fewer people who will come and want to ask Li Chong's questions.

It's just that what many people didn't expect was that when everyone tacitly agreed not to disturb the dean's old man, you Zhang Sui jumped out.

All of a sudden, it aroused the interest of many people.

But of course!

If you really want to say, what do they have to ask Li Chong, to be honest, they don't have much.

It's like in school, there are always a very small number of students who can ask the teacher questions and can ask the teacher's questions.

In the prison of the country.

Being an official is actually the main purpose.

And then the words of scientific research......

It can only be said that it is a hobby.

And......

Even Li Xiang was a little surprised by this.

also asked Li Tiandao: "What is the origin of this Zhang?" Why is your name written in front of your Aye's name? ”

Li Tian actually doesn't know much.

So he briefly told him what he knew.

Plainly!

It is the son of a relative of his in-laws.

It belongs to the side branch of the Zhang family.

If you regard Zhang Gongjin's lineage as a descendant.

Because he may be more intelligent, he ......

I also followed him Aye to do research or something.

All I can say is......

It seems that everyone's attention to the speed of light is not even as high as the attention to the relationship between Li Zhong and Zhang Sui.

Only a small percentage of people may still be a little interested in measuring the speed of light.

Of course!

This is mainly because knowing the speed of light doesn't seem to be very useful.

And for useless things, the Chinese have always paid little attention.

If it were in another era, it would even be said to be idle and idle.

This is something that Li Chong did not take into account.

After hearing about the discussion outside, Li Chong also felt that he should tell them how to use the speed of light after knowing it.

Not......

However, Li Chong also didn't know how to use the speed of light.

At most, he seems to know a mass-energy equation.

The question is......

You know the result is useless, you have to have a derivation process.

And how can Li Chong have this ability.

At last......

After thinking about it, let's brag about it.

For example......

When we know the speed of light, we can also know that the light emitted by the sun that we are bathed in today was emitted by the sun about eight minutes ago.

And the height of the sun from the earth, or the distance, is actually recorded in the "Zhou Ji Sutra".

And then......

By taking advantage of this feature, it may be of great help to astronomical observation and calculations in the future.

Of course!

Li Zhong did not specify what this role is.

This alarmed the people of the Taishi Bureau, and hurriedly asked Li Chong, what specific effect does this have.

Li Chong could only say clearly: "For the time being, I haven't thought of it yet." But...... The effect should still be very large. I'll tell you when I think about it. ”

Speechless for convenience.

In fact......

The speed of light is like a ruler, a ruler by which the universe is measured.

Because it is an immutable constant, it seems that one meter in later generations will still be defined by the speed of light.

For example......

One meter is the distance that light travels in a vacuum for 1/299792458 second.

What's the benefit of that?

It is to eliminate the kind of disadvantages that can be measured with arms.

But there is one thing to say.

How can you prove that the speed of light is constant?

You are like sound, which travels at different speeds in different media.

So what about light?

Merely......

It also seems that light does not pass through different mediums.

The excitement dissipated after about ten days.

Of course!

In ancient times, this lively dissipation did not disappear completely all at once.

But like a wave, it spreads out layer by layer with Luoyang as the center.

And that's what happened.

Next......

In the past year, the number of people who have come to visit Li Chong has increased significantly.

But there is one thing to say.

It's a bit too much for you to come here without any preparation.

And......

Again, don't think about becoming a big official through me.

If you want to talk to me about science and technology, you can.

To this end......

Most of the people were also because of this, and they didn't even see Li Chong's face, so they were brushed down at the door.

Everyone was not convinced, went to Zhang Sui, and wanted to ask Zhang Sui for advice, of course, it was actually difficult to see if this Zhang Sui really had any ability.

】

Outcome......

This one is under the test.

People Zhang Sui's scriptures and classics are not necessarily worse than them.

Even some of the most difficult Buddhist scriptures, Taoist scriptures, can be fully understood by people in two days, and they are even better explained than monks and Taoist priests.

Now everyone was convinced.