ninja bandits

"We learned about 'length and time' in the last class, and today we start teaching the definition of speed, and..."

"...Speed ​​is a physical quantity used to express the speed and direction of an object's motion, and rate is..."

"...Speed ​​is relative, not absolute..."

……

……

After finishing the food in his hands and waiting for the students from the Ninja School to come back and finish dinner together, Kaguya Kyū started today's 'Intensive Improvement' course.

After glancing at the wall clock on the wall behind him, Kaguya Xiu sped up his speech by two minutes and finished explaining the last knowledge point.

"...That's all for today's new knowledge. Now that everyone understands the definition of speed, let me ask you a question."

After clearing her throat, Kaguya looked at the dozen or so little kids below and asked, "What is the fastest in the world? There will be rewards for correct answers."

After hearing that there was a reward, the children who were originally not interested in this issue started to use their brains and began to think hard.

After waiting for a minute, Kaguya asked: "Has anyone guessed the answer?"

"It's missing, missing is the fastest!" Someone immediately raised their hands and said.

Kaguya's eyes twitched, but he did not choose to suppress the other party's enthusiasm. He asked patiently: "Why does Kazuya think so?"

Kazuya is a second-year student at Ninja School. He has short light gray hair and a handsome face.

Kazuya explained: "I read it in a book, and it said, 'No matter how far away you are from the person you love, as long as you think about them all the time, the other person will definitely feel your heart.'"

"Um..." After listening, Kaguya's head was full of black lines, and he added: "Missing things that don't exist does not count. I can only give examples of real objects."

"Dean, me!"

"Shilai, you speak first."

After receiving permission, the little boy said excitedly: "It's a voice, right? As long as we speak, the other party can hear what we are saying immediately."

Yuri Lin, who was sitting in the front row, curled her lips in disdain: "Idiot, how can the voice be the fastest thing?"

Since she was already literate, she also took intensive improvement classes with the students of Ninja School every night.

"Then what are you talking about!"

"Lightning, of course."

Yuri Lin crossed his arms and said proudly: "Distance divided by time equals speed.

Every time lightning fell on the ground, the sound of thunder came, which proved that lightning was much faster than sound. "

"Idiot Yuri, it's Hikari!"

Infected by the atmosphere in the classroom, Mei Terumi couldn't help but say: "We saw the light from lightning first and then heard the sound."

She didn't want to cheat and get involved in this discussion.

Because she had asked Brother Xio the same question before, and the answer he gave her was.

The fastest thing in the world is 'light'.

"How can you see the light from lightning if the lightning doesn't fall?" Lin Yuri retorted.

"Yes, if light is the fastest, what about shadow?"

……

……

"Okay, stop arguing."

Seeing that the situation was showing signs of getting out of control, Kaguya hurriedly comforted him, looked at another soft and weak little lolita with a round face and asked, "Rikka, what do you think?"

“There’s no fastest thing, there’s something faster.”

When her name was called, Rikka paused and gave a different answer.

He explained in a clear and logical manner: "Didn't the teacher say that speed is not absolute, but relative?

As long as you put the fastest thing on a Mercedes-Benz carriage, wouldn't that thing become faster? "

"It's a very interesting idea. He is indeed one of my most promising students." Kaguya Hugh praised.

"What's Dean's answer?"

"Yes, Dean, please announce the answer quickly."

"What's the fastest?"

The other students couldn't restrain their curiosity and started to make noises.

"The teacher can't be sure now."

Pushing up his glasses, Kaguya Xiu gave his guess: "But my guess is the same as Xiao Ming's, it should be light."

"Ah?" "Why is this?" "My reward."...

After hearing this answer, the teenagers in the audience felt like they were being fooled.

"Those who take the initiative to answer the questions this time will be rewarded." Kaguya Hugh's words made everyone in the classroom cheer.

"Practice is the only test of truth."

Taking out a seal scroll from his arms, Kaguya smiled and said: "Since there is no answer, let us find out the answer together.

Find out what the fastest thing in the world is. "

"How to find it?" Everyone was puzzled.

"Everyone, come to the yard with me."

After saying hello, Kaguya went to the office next to him, called Yaon together, and came to the front yard of the orphanage.

After taking a look at the dozen or so little kids behind him, Miyin asked curiously: "Captain, what are you planning to do?"

"Do an experiment." Kaguya said concisely.

"What experiment?"

"The Michelson-Morley Experiment."

"Michelson Morey? What a strange name, a bit like Kumogakure's style." Miyin tilted his head.

Choosing a flat open space, Kaguya Xiu quickly began to form seals with his hands: "Get out of the way."

After finishing his words, he stretched out his palm and pressed it on the ground.

Earth Escape Earthquake Core!

Accompanied by a muffled sound of "rumbling", a circular platform with a diameter of more than five meters and a height of about one meter slowly rose from the ground, causing the surrounding children to step back.

He stood up, opened the seal scroll, slit his finger, stretched out his palm and pressed it, and four objects appeared in Kaguya Xiu's arms.

Jump onto the round platform and place the specially processed sodium light in your hand at the nine o'clock direction of the round platform.

After adjusting the height, go to the center of the circular platform, stand two identical glass beam splitters in your hands on the circular platform, and carefully adjust the angle so that it is at an angle of 45° with the beam emitted by the sodium light lamp.

Finally, he came to the six o'clock position, aligned a black wooden board with the glass beam splitter, and fixed it vertically on the round platform.

Arriving at the round platform, Terumi Mei's big eyes were full of curiosity: "Brother Xio, what is this?"

"Interferometer."

Terumi Mei whispered to herself: "Interferometer? Why have you never heard of such a thing?"

Without answering the other party's doubts for the time being, Kaguya went to the twelve o'clock and three o'clock directions and drew a thirty centimeter straight line on them.

Then he looked at the beautiful girl not far away and said, "Miyin, please condense two ice mirrors at these two lines."

"Ok."

Nodding, Miyin put his hands together and said softly: "Secret Technique·Magic Mirror Ice Crystal."

The next moment, two square ice mirrors as smooth as mirrors condensed from the air, filling the straight line drawn by Kaguya Hugh.

The position and height of each instrument was calibrated again and confirmed to be correct.

Kaguya ducked under the round platform and pressed the switch of the sodium light lamp.