AISubs
Didn't the ninja walk on the water?
The speed of the tricycle was very high
This time, they used the science to thoroughly explain the history of Japan
The legend of history is also proven
Can the real shirahadori really be done?
The legend says that three arrows don't break, but how does it actually work?
Unexpected truth is revealed
Kirin
Ren
Thank you
This time, the special instructor is Jun Hirabayashi
He is from Kyoto University
He studies everyday a little bit of everyday questions
He is a member of Zatsugakukai
By the way, what kind of research do you usually do?
For example
You go to the station, right? When there is a long staircase, how much angle do you think you can see inside the skirt?
I used technology to calculate things like that. I calculated it according to the situation.
The angle at which the skirt can be seen. Are you a smart pervert?
In order to protect it, how can I not see it?
This time, we will unravel the unexpected truth of history from the perspective of science.
First of all, let's go to this theme.
New Trivia about Three Bacterial Alterations What does it mean?
Well, it's not like we're the same person.
It's just a change.
That's right.
It's just a change.
Mr. Kono, please explain it properly.
Yes.
It's a story from the time of Tokugawa Iemitsu, one of the three great shoguns.
Once a year, the Shogun Daimyo has to go to Edo.
I see.
He has to make a vow to Tokugawa.
His wife and children have to live in Edo for a year.
He's like a hostage.
Tokugawa, are you both sick?
Both of them are sick.
Do you live together?
One of them is sick.
His wife and children have to live in Edo for a long time.
He's not allowed to go back to Edo.
He's embarrassed.
He made a mistake.
He made a serious mistake.
His wife and children have to live in Edo for a year.
There was a culture like that since the Kamakura period.
In order to show the general that he can use it properly,
he used to go to Kamakura.
Since the Edo period, he went to Edo.
As he said, he lived in Edo for a year and returned to his country for a year.
He repeated that.
I see.
When he used science, he found a surprising fact.
The walking speed of the Daimyo line was actually very high.
Of course, he used to travel by foot.
But his walking speed was very fast.
There was a reason for that.
The Daimyo line depends on the size of the country.
There were more than 1,000 people in the line.
It cost a lot of money.
He stopped here and ate.
Then he stopped here and ate.
I see.
If you take Yoko-san with you, our country will become a great state, so I'll take Oze with me.
That's right.
It's the same as when Yoshimoto called a Tokyo comedian to Osaka on his way home from work.
It's exactly the same.
I've never done that before.
That's how it is.
I feel like I've known that before.
Thank you.
How fast was he actually moving?
Let's take a look at how fast he arrived in Edo.
In the past, Kagawa and Maeda were located in Kanazawa.
The distance from Kanazawa to Edo was about 540 km.
It's a mountainous area.
I see.
How many days did it take to arrive in Edo?
Looking at that, it took 7 days.
7 days?
That's about half of the journey.
If you want to feel how fast it is, you can try to fix it in one day.
To go 540 km in 7 days, you have to travel 77 km a day.
You still don't get the hang of it, do you?
For example, you have to go to the gym twice a day for the full marathon.
You have to do that for a week?
That's right. For 7 days.
Assuming that you can walk 10 hours in one day in an era without streetlights, the travel distance is 77 km a day.
In other words, if you walk 77 km in 10 hours, the speed will be 7.7 km.
Then, Kono will experience how fast the speed of 7.7 km is.
Please look forward to the next episode!
I'll give you 7.7 seconds.
Wait a minute.
It's fast!
This is for 7 days.
It's the speed of today.
It's not the speed of walking, is it?
It's the speed of running.
It's about this, right?
2000 people are running at this speed.
It's fast!
If you actually do it, you'll understand, but it's about 8 kilometers per hour.
It's the limit of walking.
If you go over that, you'll have a hard time if you don't run.
I see, I see.
It's the last minute of walking.
Is Daimyo the same speed?
Daimyo is the same speed.
Daimyo is a basket.
By the way.
Did the person in the basket go at this speed?
That's what he said.
And, for example, in the case of Kagawa.
Are you okay?
Stop it for a second.
I'm sorry.
Stop it for a second.
Be quiet.
I don't want to do it.
You can't do it at this pace.
It's hard.
You can see it if you look it up.
Daimyo was shaking a lot.
What?
It was shaking a lot.
You have to run so that it doesn't shake.
It's even harder.
In particular, the Kaga clan's Sankin Kotai was said to be the largest daimyo procession at the time, with thousands of people. NThere is a very compelling reason, isn't it?In 1643, Kanazawa received a call from Edo that his wife, who was in Edo, was about to give birth to a child, and asked him to come to Edo as soon as possible.
It seems that I was in a hurry all the time, but it seems that it became faster anyway, including that at this time.
As a result of verification, the fastest Sankin Kotai in the Edo period was 7.7 kilometers per hour, just barely enough to walk.
I love the horizon ninja
Yes, I watch ninja dramas, ninjas who like this ninja
I'm hated by everyone
He is a ninja who always helps the main character
No, not in the drama
You just like the drama, right?
Yes, I like it
Let's study
You like it
Did this ninja actually exist?
Ninjas that are often depicted in dramas or manga
It's quite a creation
There are people who have become models of ninjas
For example, Hattori Hanzo, famous in the Edo period
In other words, the Iga family
Or the Koga family
There are people who really existed
What about this kind of thing?
That kind of thing remains in the record, and of course it is used for fighting, for example, something like a firecracker, or something like throwing something in the egg with ashes, or something like a smoke ball.
That kind of thing remains in the record, but it should have been a lot of simple activities.
I think you all know this kind of tool.
This is Mizugumo.
I think I've seen this in Ninja Hattori's work.
Did you actually use this, Sensei?
I don't know if I actually used it, but the record is still there.
However, there is no record of how I used it.
In the book called 《Bansenshukai》, it was described as something like this with a diameter of about 60 cm.
However, I think I've seen this image a lot in the form of ninjas walking on water.
I see.
When I researched this in science, I found this kind of g-sign.
The water cloud was not a tool for walking on water. I definitely have this kind of image,
What is the evidence that it is not a walking tool?
Science will make it clear.
What kind of formula is this?
I'll leave at once, if something like this comes out.
I think it's a fairly simple formula.
Is this easy for you as a teacher? It's very early.
This is the formula that proves that water spiders weren't supposed to walk.
It's a bit difficult, but when I calculate this formula that expresses the powerlessness of water spiders.
15kg
What do you mean?
If you put a water spider on your leg and go into the water, a person weighing 15 kg can float.
It is that.
Would you like me to say just that in the future?
The process of seriously thinking about such things is a big waste of the teacher.
I have no idea.
So 15kg means that Ninja is a grown man, right?
that's right.
Did you know that water spiders can only float people under 15kg?
Then, let's think about how they actually used it.
Hold it with both hands when climbing the roof. When climbing the roof, hold it with both hands.
Something petapeta. It's sticky.
It's like the petapeta of Tokyo Friend Park. It's like the sticky thing in Tokyo Friend Park.
It's like a cube?
yes. Yes.
It's not. It's different.
Nami. Nagisa.
It's like, if you ride this, it'll float. It's like, if I get on this, I'll float, and if I don't, everyone will laugh at me.
It's a lovely item. Items for cheating. Akali. It's a cute item. It's a trick item. Akari.
swim ring. Float.
Correct, here. I used it as a float. I can't do this, but it seems like I can do it. Float. The correct answer is this. I used it as a float. It's impossible to do this, but you can do this, right?
I agree. This shape from earlier is 60 centimeters in diameter with a 40 centimeter hole in the middle. Well, there is a hole 40cm in the middle with a diameter of 60cm.
When you float and enter the water, your body...
The body is almost submerged in water. It floats from here, weighing exactly 15 kilograms , and if you use the formula from earlier, you can see that this shape has the buoyancy to lift only the head. I see. As a result of verification, the water clouds used by ninjas were not tools for walking on water, but rather floats. Next is this theme.
Scientific Experiments, Fake, Real, Historia Next, we'll conduct actual experiments in a fictional studio related to famous historical episodes and verify them. First is this episode.
I don't think so. Legend of the Three Arrows. Are arrows really unbreakable? This is also a famous story, isn't it, Sensei?
Yes, if you are Japanese, I think most people know the story. Yes, most Japanese people know this story. Do you know what kind of legend this is?
Uh! Look, you know the young team, Kate, 13, tell me. Huh? Look, even though the younger team knows, Keito is 13 years old.
A single arrow can break, but three arrows together won't break. I can break it with one arrow, but I can't break it with three arrows.
That's correct, so three people, three brothers, should work together. That's correct, so the three of you, the three brothers, work together to do it.
It sounds like you didn't know that. You didn't know that much, did you?
yes. Yes.
You really didn't know?
Really?
I read and heard. I heard it for the first time.
You heard it for the first time? No way!
We don't learn in Hokkaido. I didn't learn it in Hokkaido.
I'll learn I will learn, even in Hokkaido. I will learn, even in Hokkaido. You learned it in Hokkaido.
I learned You learned it in Hokkaido.
After verifying that these three arrows are really unbreakable, we prepared the actual arrows. I have verified that these three arrows really don't break.
Here is an arrow that was used in the Warring States period, and the material is made of Yatake, a member of the bamboo family. Here is an arrow that was used in the Sengoku period, and the material is made of the arrowhead of the Sasa family.
For example, you can hold one or three and break them. For example, one or three of them can be used to break the arrow.
It's a kind of legend that you made it. I think that is the legend of the emperor's smile. I know I'll break the head of the emperor. That one is the head of the emperor's smile. That one is the head of the emperor's old smile. That one is the head of the emperor's old smile. The smile of the legendary head of the emperor's days. Of the head of the emperor's smile. of the head of the emperor's old smile. of the head of the emperor's old smile. of the head of the Emperor
You use the word moment a lot, right?
I don't use it very often.
First of all, if you calculate this formula, which gives the necessary force to break a single arrow...
20 kg weight. In other words, it requires the same force as lifting a 20 kg object.
Then, actually, Nomura, as an adult man, let's see if you can break just one.
If you can break a 20 kg object if you can hold it...
It's really good, isn't it?
No, it's not.
It's dangerous if it flies into your eyes.
Can I break it?
No, you can't.
I got it.
You can break it with one shot.
What happens if you use three shots?
I saw it close.
It might be dangerous if you use three shots.
What?
It doesn't bend.
It doesn't die.
It's just the hand.
One, two...
What are you doing?
It doesn't bend.
If you use three shots, you just need three times the power.
If you don't have the power to lift a 60kg object, it won't bend.
If you have the power, it might bend.
For example, in the case of an athlete, I think it would break relatively easily. For example, in the case of a sports player, I think it will bend relatively easily. If there is, it will break. Nomura didn't have enough power, but if you have the power to lift a 60kg object, it will bend. And there is a way to bend it easily from the teacher.
When I try to break it with my arm strength, the force on the left and right side causes the arm to apply force in the opposite direction, resulting in a useless movement. If you try to bend with the strength of your arms, the strength of your left and right arms will be the opposite.
For example, you can easily fold this by stepping on it with your foot and doing this with one foot. For example, if you step on it with one foot, it will bend easily.
It's easy, isn't it? It's easy, isn't it?
That's why it's three, and it'll break. That's why you can break 3 of them.
Wait, wait, wait. Wait, wait, wait.
I can do it without breaking. You can break them.
It's broken, isn't it? It's fine because you broke them.
I can do it without breaking. You can break them.
Here is the next theme. The next theme is this.
Is Shinken Shirabatori really possible? Is it really possible to take a real sword with a white blade?
I have prepared a toy sword, so let's try it. I have a sword ready, so let's do it.
Let's go with Yamauchi and Kono. Let's go with Yamauchi and Kono.
First of all, serious white blade removal. First, the real sword with a white blade.
I'll let you guys see what it's like. I'll have you two show me what it is.
Now you can say it with all your heart. Can I say it out loud?
please. Go ahead.
Seriously, seriously I think it's serious. I think it's a real sword.
each other. Both of you.
Then you. That's a real sword.
little by little. stop. Stop it. Stop it.
Experiment. It's an experiment.
It's weird. It's a real sword.
Dangerous. That was close.
Strange. Was it really dangerous?
Teacher, you're crazy. That's dangerous.
You're crazy. That's dangerous.
Teacher, I'm really scared right now. Are you really scared now?
Excuse me, sir. I'm sorry.
Mr. Masashi, if that was the real Nihonto, it would have been over by now.
This is impossible.
What do you think of this Shinken Shirahadori?
If you calculate if the Shinken Shirahadori is really possible, you will know the answer.
I see.
First of all, Nihonto is about 1.2kg.
There is a weight of about 1 to 1.5kg.
The Nihonto is shaken down with full force and moves forward.
You calculate the amount of motion energy that will stop with force.
That means there is no motion energy.
I see.
You will know if it can be done or not.
Even if you stop the 1.5kg that is shaken down, how much can it stop?
In other words, if you use the calculation formula, you can understand how much you need that circle.
It's a bit difficult, but this is the formula that calculates the distance required to stop the sword that has been shaken down.
Do you understand this? How many centimeters can you push from where you stopped it?
Can you calculate it? 100 centimeters.
Aili, can you calculate it? 4.9 centimeters.
How much do you think this is?
It's about 10 centimeters.
Can you push it in after stopping it?
I see.
The calculation is as follows. If you calculate this formula, it will be like the next one.
70cm!
From where I stopped. That's fine, so It's quite a bit from where you stopped it.
An important point for serious shirohadori. The important point of Shinken Shirahadori.
The distance between the sword and the person who stops it is 70 cm. When you actually look at it. The distance between the sword and the person who stops it is 70cm. When you actually look at it.
If you start to stop from here, the kinetic energy of the Japanese sword can be stopped just up to the sword. If you start stopping from here, you can stop the energy of the sword from here.
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It's impossible.
On the other hand, if you try to stop it,
from here,
70cm.
You have to raise your hand up to here.
It's impossible.
You will be cut if you do this.
You will be cut here.
From here.
So,
even if you extend your hand,
there is no 70cm.
That's why it's impossible
It's impossible.
Serious white blade removal is impossible Even if the sword is stopped, the head will be split in two
Does that mean that there was actually no real swordsmanship?
There is a similar technique, that is, when the opponent has Japan and a sword and you don't have anything,
There was a technique to steal the sword and defeat the opponent.
How to say no sword
Yagyu Sotoshi's idea of Mutodori is similar.
It wasn't a serious white blade taker like this
There was such a technique, but there was no serious white blade to stop the Japanese sword.
If you only had concentration, you might have been able to pinch the sword.
But when I stop, I have two bodies
I think I didn't concentrate enough just now.
I see
let's go just one more time
I really want to see you stop
This is less than 1.5 kilograms.
Let's go for a serious match, start
What is this?
It's a sashimo.
He was already prepared.
If you set up a calculation table, you will be the one running.
Now, let's announce the winner of this week's A.C.E. No.1.
The winner is the person who can't do anything.
The punishment is either a punishment or a reward.
The winner is the person who can't do anything.
Akari!
And the candidates for this week's Bakako are Chih-Hee and Shion!
Shion hasn't learned such things in Hokkaido.
He should be learning.
And Chih-Hee said he likes ninjas before, but his talk is very short.
This time, the two of you are going to play the ninja battle balloon breaking contest!
I'll do my best!
Like ninjas, you'll have to break balloons at the windmill. The one who breaks it first wins.
Please do rock-paper-scissors.
Rock-paper-scissors!
I won!
Let's go!
Rock-paper-scissors! Ok, let's go.
Please do it.
It's weak.
I see.
It's close!
It's really close!
It's weak.
Shion, will you go next?
I'll do my best.
Wow!
It bounced.
It doesn't bounce.
I'll do my best.
It's getting better.
It's getting better little by little.
Next, Chichi.
I'll do my best.
Chichi wins!
How long have you been doing this?
With this, you can recover your eyesight
Manabu-kun's Special for Recovering Your Eyesight
Don't miss it!