The circuit is closed, and the blue and white current is injected into the silver-white sodium filament, constantly emitting a trace of dim light.

The emitted light converges through the mirror surface around the sodium light, through the only circular outlet, pierces the darkness and comes straight to the translucent spectrometer.

As soon as it comes into contact with the spectrometer, a small beam of light is reflected by the mirror, turning out to a right angle, and shooting directly towards the ice mirror at twelve o'clock.

The remaining half of the beam undergoes two refractions, passes through the spectrometer, and comes to a spectrometer with exactly the same parameters and compensating.

It was weakened again, and the beam passed through the second beam splitter and came to the other ice mirror located at three o'clock.

When he hit the completely opaque ice mirror, the beam immediately made a 180-degree turn and returned along the original path.

Passing through the compensating spectrometer again, he came to the surface of the initial spectrometer, and was forced to reflect and turn it out of a right angle, and converged with another beam of light shot from the direction of twelve o'clock again.

The overlapping beams of the two columns interfere with each other.

The crests and troughs cancel each other out and superimpose them.

Finally, we came to the black observation screen located on the defense line at six o'clock, and projected a row of light and dark interference fringes.

To be intuitive, the light path of the experiment is roughly like this:

………………Reflector………

……………↑…↓…………

………………↑……………………………………………………………………………………………………………………………………………

Light source →→/Spectrum/Light

…………↓～↓…………… Mirror

……………↓～↓……………

……………Observation screen………

Seeing the bright and dark strips on the observation screen, Kaguya nodded with satisfaction.

He turned his head to look at the naughty children behind him and asked, "Who would like to go to the round table and help me observe the stripes on the black wooden board?"

"I'll go."

Without waiting for the others to speak, Terumi Mimi jumped first and landed steadily on the round platform.

"Be careful not to block the light."

Looking at the little girl with orange hair on the round table, Kaguyasu instructed: "Then observe whether the light and darkness of the stripes on the black wooden boards change and whether they move."

"I see."

"Xiao Ming, stand firm, I'm going to start moving."

Another piece of advice was given, Kaguyasu quickly finished printing with both hands and gently pressed on the ground.

The thick earth-attribute chakra surged out of the palm of his hand, and quickly wrapped the entire round table along the ground, covering it with a layer of "chocolate" coat.

Immediately afterwards, the round table with a diameter of more than five meters began to rotate clockwise under Kaguyasu's control, becoming faster and faster.

When the rotation speed of the disc reaches three seconds, it starts to slow down and eventually stops completely.

The control panel sank into the ground, filled the courtyard again, Kaguyasu stood up and asked with a little expectation: "Have you observed any changes?"

After patting his dizzy head, Shomi Mitsu said softly: "No."

"Are you sure?"

“I’m pretty sure.”

After recalling the scene just now, Takami Mitsu's tone was firm.

Immediately, my face collapsed, and I bit my lip and asked, "Brother Xiu, has the experiment failed?"

"No, the experiment was very successful." Kaguyasu's answer was somewhat unexpected.

Tomimi and the onlookers:???

Looking at the little kids with black question marks on their faces, Kaguya's mouth slightly raised and explained: "This experiment verifies whether the speed of light is constant in different reference systems.

Since the stripes have not changed, it means that the speed of light is indeed constant."

"How did the captain see this?" Miyin asked a question that everyone present wanted to know.

"This, let's assume that there is an absolutely static reference system, and the propagation of the speed of light in this reference system follows the principle of superposition of velocity...

... According to calculations, the number of movements of the stripes ΔN≈0.17."

After roughly explaining the principles of the Michaelson-Morey experiment, Kaguchi said excitedly: "As a result, Komaki did not observe the movement of the stripes, which shows that the speed of light is constant in different reference systems and directions."

He had long wanted to do this experiment.

Unfortunately, I went to the battlefield just after graduation, and was lingering on the brink of life and death. I had no time and no energy to build instruments and complete this experiment.

After listening to the other party's explanation, everyone was still confused, including Miyin.

Only Shou Meimi had a smile on her face, with little stars flashing in her eyes, and she exclaimed: "Brother Xiu is so amazing!"

"It's worthy of being our dean, but he can actually design such a powerful experiment."

"Yes, Dean Xiu actually knows so much!"

"I would have thought I could be as smart as the dean."

The little kids who didn't understand the rest, but were also shocked, echoed.

Shaking his head and not accepting everyone's praise, Kaguyasu said sincerely: "I'm just standing on the shoulders of the giant."

What is truly great are the great sages who pioneered the way for human civilization in his previous life.

He is just a porter who picks up people.

"Dean, what does the constant speed of light mean?" After quieting down, Liuhua suddenly asked.

"Answer the question I asked you in class just now."

Putting away the experimental equipment on the ground, Kaguyayu said with a firm tone: "The fastest thing in the world is light!"

Liuhua asked: "Why?"

Kaguchi explained: "This involves a theory called 'Special Relativity Theory'. The specific content is quite complicated. I will explain it in detail to you after you have accumulated enough basic knowledge in the future."

"This theory holds that in any reference system, the speed of light remains unchanged, and the speed of other objects can only be close to the speed of light, and it is impossible to reach or exceed the speed of light.

Moreover, the same object may have different time, quality, length and other things in different reference systems.

The most important thing is that it tells us that energy and mass can be converted into each other!”

The method of time-space ninjutsu that is suspected to move through wormholes has deviated from the traditional definition of speed.

That is: v=x/t or v=Δx/Δt

Therefore, it is not within his discussion.

"Can this experiment tell so much?" Zhao Meiming still disbelief.

"Why, are you feeling disappointed?"

Seeing everyone's reaction, Kaguya asked casually: "I think such an important experiment should not be so ordinary.

There must be dazzling brilliance and shocking wonders accompanies it. It is best to create something big to attract the attention of the whole village?"

"Uh, there's a little bit." Takamimi nodded honestly to admit.

"It's normal for human nature."

Kaguchi expressed his understanding: "Scientific research requires me to calm down, and scientific experiments are mostly boring.

So, if you really want to embark on this path, both perseverance and patience are indispensable."
Chapter completed!