The reason why the earth can have such a strong gravitational force is precisely because of its large mass.

only……

In the book of heaven.

Although the concept is provided, corresponding questions are left in each link.

Let Dayan Research Institute find the answer by itself.

"Gravity! According to the formula recorded in the heavenly book, as long as we can measure the magnitude of gravity, we can even calculate the mass of the ground under our feet!"

Yan looked at the sphere map placed in the research institute.

Feeling more and more excited.

How majestic and magnificent is it to measure the mass of the entire earth under your feet?

In the future, his name will also be recorded in the annals of human history.

Even Ji.

It is impossible to block his light!

"During the year His Majesty went on the expedition, we went through hundreds of gravitational calculations, and finally found the most accurate gravitational calculation method."

The people in the institute hesitated for a moment.

He hesitated and said: "It's just that this kind of calculation needs to use the tallest building in the palace, the North Tower."

Yan frowned slightly.

The North Tower was built during the Ji period.

It is mainly to worship the ancestors of the Ji tribe.

It has never been open to the outside world.

but……

In just a split second, he made a decision: "I am ordering that tomorrow, the North Tower will be opened for experiments!"

After this year's battle of conquest.

He understands more and more...

The importance of technology to human beings.

Without developing technology, I met those extraordinary creatures...

They have only one outcome: being slaughtered.

The future of Dayan Kingdom lies in mastering the power of technology!

and so.

Everything must give way to technological research!

then……

The next morning.

Yan led the people from the research institute to the North Tower.

An area was cleared.

"Your Majesty, the method of calculation is this. We plan to drop an iron ball on the top of the North Tower."

"Then on each floor, set up an observation point to specifically calculate the time when the iron ball falls."

"Finally, combine the time and length of the seven paths to calculate and deduce the magnitude of gravity."

Yan after listening to the report.

The principle was quickly understood.

According to the description in the heavenly book.

Everything in the world is pulled by this force.

So……

Without it, the iron ball would be suspended in the air.

The fall of the iron ball must be because of it.

and so.

According to the space distance and time length of each fall of the iron ball, it can be accurately calculated...

The magnitude of the gravitational force that pulls the iron ball down.

"start!"

Yan took a deep breath.

A big wave.

On the top of the North Tower, the people from the research institute pinpointed the timing and put down an iron ball.

It didn't take long.

The iron ball fell from the top of the tower on the seventh floor to the ground on the first floor.

And at each observation point, a dedicated person accurately recorded the time when the iron ball passed the observation point.

Subsequently.

with these data.

Everyone returned to Dayan Research Institute.

Various sophisticated calculations began.

three days later.

After several continuous verification and correction.

In the Dayan Research Institute, cheers erupted.

"Your Majesty! We succeeded! It can be preliminarily determined that the gravitational force is about 9.8m/s, and it is this force that has been pulling the object down!"

"As long as the upward force exceeds this force, in theory, we can even continue to fly in the air!"

After calculating the size of the gravitational force.

Yan looked at the densely packed and overturned calculation manuscripts in the research institute.

Also extremely excited.

Take a deep breath.

He opened the mouth and said: "I plan to create a special scientific journal, and select the latest research theories of Dayan Research Institute every month, as well as outstanding inventions and creations in Dayan, and publish them in it, so that everyone in the world can know!!"

Subsequently.

He looked around at everyone, and then reminded: "Gravity is only the tip of the iceberg in the three volumes of the Heavenly Book. You must not be complacent. You need to make persistent efforts and continue to study the Heavenly Book!"

Everyone in the research institute looked solemn.

They all bowed their heads and bowed to him: "I would like to follow His Majesty's instruction!"

Everyone's expressions were full of fanaticism and admiration.

They understand.

If there is no Yan, there will be no new look of Dayan Kingdom that is changing with each passing day.

The territory of Dayan Kingdom...

It is also impossible to explore the wilderness and the ocean.

Now it has conquered a world and obtained three huge mines.

Captured 40 labor force!

On prestige.

Today's Yan, in the Great Yan Kingdom, is only under the gods.

……

The 34th year of the Great Yan calendar.

The Dayan Research Institute continued to study the three volumes of the Heavenly Book, learning mathematics, physics, and chemistry from it.

Many novel inventions and creations have been produced.

Simultaneously.

In the special issue of "Dayan Science", many heavyweight research results were published and announced to the world.

among them.

The most famous is the systematic introduction of bacteria in river water.

According to the records in the Heavenly Book, this kind of organisms are small in size and are collectively called bacteria.

Some bacteria are harmless to the human body.

Some bacteria can spread disease!

And with the in-depth study of "Physics", one of the three volumes of heavenly scriptures.

A high power microscope was developed.

through the microscope.

People from Dayan Research Institute discovered dozens of bacteria for the first time.

And these bacteria were classified and named.

At the same time, various petri dishes were made to culture and observe the bacteria.

The habits and hazards of these dozens of bacteria...

All clearly summarized and explained.

It is even believed that the human body is very likely to be caused by these bacteria.

This series of theories was published in the special issue of "Dayan Science".

Shocked the entire Great Yan Kingdom!

……

The 35th year of the Great Yan calendar.

The Dayan Research Institute has formulated a series of experiments to try to solve the second question in the Three Questions of the Gods.

The speed of sound and the speed of light!

before this.

All they know is that light travels faster than sound.

But how much faster...

But no one knew.

After hundreds of experiments, failures and adjustments.

Dayan Research Institute finally found an optimal method to measure the speed of sound.

Have one person stand at the very top of the North Tower.

Looking at the cannons being fired ten kilometers away.

Record the moment when you hear the roar of the cannon.

This cycle was tested hundreds of times.

Got hundreds of different time data.

then……

From these times, divide by the distance between the two places and take the most average value.

The speed of sound is obtained to be about 343m/s.

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