| # | Data |
|---|---|
| 最高順位 | 9位 |
| 最低順位 | 50位 |
| 増加再生回数 | +710785回 |
| ランクイン日時 | 2021/01/25 11:00 |
| ランク圏外日時 | 2021/01/27 16:30 |
| 急上昇継続時間 | 2日05時間30分 |
| 再生回数 | 308903回 |
| コメント数 | 2488件 |
| 高評価数 | 20598 |
| 低評価数 | 474 |
| 評価数合計 | 21072 |
| 高評価割合 | 97.75% |
※再生回数, コメント数, 高評価数, 低評価数, 評価数合計, 高評価割合は初回ランクイン時の数値
| 日時 | 順位 | 再生回数 |
|---|---|---|
| 2021/01/25 11:00 | 10位 | 308903回 |
| 2021/01/25 11:45 | 9位 | 316365回 |
| 2021/01/25 13:30 | 10位 | 334360回 |
| 2021/01/25 14:45 | 9位 | 353639回 |
| 2021/01/25 17:45 | 10位 | 401021回 |
| 2021/01/25 20:45 | 11位 | 479926回 |
| 2021/01/25 22:45 | 12位 | 519752回 |
| 2021/01/26 4:00 | 11位 | 683314回 |
| 2021/01/26 12:15 | 13位 | 787663回 |
| 2021/01/26 12:45 | 23位 | 790441回 |
| 2021/01/26 13:00 | 27位 | 793299回 |
| 2021/01/26 13:30 | 28位 | 798436回 |
| 2021/01/26 14:30 | 29位 | 809142回 |
| 2021/01/26 14:45 | 32位 | 812090回 |
| 2021/01/26 16:15 | 33位 | 826703回 |
| 2021/01/26 17:45 | 34位 | 842823回 |
| 2021/01/26 18:00 | 33位 | 845186回 |
| 2021/01/27 1:15 | 34位 | 940476回 |
| 2021/01/27 6:00 | 32位 | 979132回 |
| 2021/01/27 7:15 | 31位 | 983557回 |
| 2021/01/27 9:15 | 30位 | 989823回 |
| 2021/01/27 9:45 | 31位 | 991962回 |
| 2021/01/27 10:00 | 36位 | 992822回 |
| 2021/01/27 10:15 | 39位 | 993743回 |
| 2021/01/27 12:30 | 46位 | 1002805回 |
| 2021/01/27 13:00 | 48位 | 1004844回 |
| 2021/01/27 13:30 | 50位 | 1006886回 |
| 2021/01/27 16:30 | 50位 | 1019688回 |
サメの標本が気に入った男はカニの標本を買う。
しかし、カニの中身は全く見えなかった。
男が欲しかったのは内蔵が透けるスケスケタイプだった。
発狂した男は本物カニでカニの透明化を目指す。
気がつけば二ヶ月間カニを煮続けていたのであった
動画へつづく
この動画はカニの甲羅からタンパク質と炭酸カルシウムを
できるだけ取り除いたキチンナノファイバーを
高濃度の天草液で固めた物です
一般的にキチンに樹脂を浸透させて作られた場合、
曲げ強度が強い透明のプラスチックができるらしいです。
※動画は安全に十分な配慮をして制作しておりますので、絶対にマネしないでください
＃JapaneseknifeMan
しかし、カニの中身は全く見えなかった。
男が欲しかったのは内蔵が透けるスケスケタイプだった。
発狂した男は本物カニでカニの透明化を目指す。
気がつけば二ヶ月間カニを煮続けていたのであった
動画へつづく
この動画はカニの甲羅からタンパク質と炭酸カルシウムを
できるだけ取り除いたキチンナノファイバーを
高濃度の天草液で固めた物です
一般的にキチンに樹脂を浸透させて作られた場合、
曲げ強度が強い透明のプラスチックができるらしいです。
※動画は安全に十分な配慮をして制作しておりますので、絶対にマネしないでください
＃JapaneseknifeMan
1: 圧倒的不審者の極み!
2021/01/24 21:30
Do you feel sleepy?
※あなたが眠らぬようダンボールを激しめに致しました
※あなたが眠らぬようダンボールを激しめに致しました
2: Isaac - Lizard king
2021/01/25 0:30
Alternate title: man finally finishes showing off all of his chemistry equipment after several years of advanced experimentation.
3: ComputersandJava
2021/01/25 1:32
Who's ready for a lesson in material science interwoven with surrealism?
4: MozarteanChaos
2021/01/25 0:02
cons: no more protective carapace to protect essential organs
pros: new sick-ass claw that all the other crabs will be jealous of
pros: new sick-ass claw that all the other crabs will be jealous of
5: raziel1178
2021/01/24 23:03
Got side-tracked so hard he had to improvise at the last minute to make a knife XD
6: john fletcher
2021/01/25 0:42
Just when u think u know what he is going to do he throws a curve ball and does something completely different mind blown
7: RED redstar
2021/01/24 22:59
Inspired by "Anatomy of a Crab"
-your imaginative ideas never ceases to amaze me.
Stay safe there.
-your imaginative ideas never ceases to amaze me.
Stay safe there.
8: DominateEye
2021/01/25 7:34
"Is it a knife OF crab or FOR crab?"
"Yes."
"Yes."
9: Lapantouflemagic0
2021/01/25 0:34
Okay boys and girls, curious people of all ages, let’s break down what this madman did this time.
First of all, I am not an expert in arthropod exoskeleton chemistry, even with seven billion people on earth there’s probably not more than a handful of such weirdos. But I have a decent understanding of biochemistry and can read wikipedia.
So what is Chitin ? Long story short, it’s like cellulose, a long polymer of sugar that plant cells use to make walls. But unlike cellulose chitin is made by animals and the sugar monomers are slightly modified for extra resistance (= lighter for equal strength) because animals have different issues than plants.
Anyway, chitin in its pure form is supposed to be translucent, so he’s trying to clean the crab shell from anything that is not chitin to at last have a decent see-through crab. never thought i'd say that one day.
How will he do that ? First he presents to us his magnificent ozone machine : ozone is chemically speaking O3. You know that oxygen from the air (O2) tends to oxidize stuff right ? Well O3 is the much more aggressive version of that, don’t breathe it I guess ?
As far as I know the main way to obtain ozone is to generate an electrical arc, like with a Tesla coil or something, I don’t know how his machine works but I assume it generates the ozone in its casing and then just bubbles it in the water, pretty sure it is not made _from_ the water.
Now, generally speaking in the living world, color is obtained through pigments : small molecules that often have a cyclic structure. An other possibility is through the use of metallic ions (like in your blood, provided you have some) but then the color is rarely the obective. Anyway, those pigment molecules are somewhat fragile and a good way to destroy them is to use an oxidant. That’s what he demonstrates when bubbling ozone in the orange water : the color disappears.
So he does that with the crab shell, there’s no before/after picture so it’s hard to tell how effective that was. As an added benefit, the oxydation probably helps destroying some unwanted organic trash on the shell.
Next he takes some magnesium metal and puts it in water. From its native state, Magnesium needs to get rid of two electrons to have a nice smooth outer electronic shell, and it will gladly give them to water. So the reaction is Mg + 2 H2O → Mg2+ + 2 OH- + H2. Thankfully magnesium metal is not as angry as sodium or Potassium, that straight up explode in water. Kiwami gets to live an other day.
The important part here is that this makes the solution extremely basic (the OH- part), that would be pretty aggressive for your skin and that’s the point : boiling the crab shell in that stuff will completely ruin most proteins and whatever else is in the shell. Being basic also will saponify any oils and fats that may be present (long story short : make them water-soluble) for extra cleanliness. Chitin is largely unaffected by that because of complicated reasons.
That worked pretty well, anything that had a color was completely destroyed, now the shell is a nice clean white. But it’s completely soaked with caustic soda, so he boils it in clear water to wash it. By the way, the reason he boils it is because that makes it easier for things to diffuse in and out of stuff, you could cold-cook pasta if you really wanted, the water would eventually find its way into the noodle but it’s inefficient and kind of gross. He then checks with the pH paper which returns neurtal.
He then prepares a bath of citric acid to clean the shell even more. Citric acid is kind of “mild” with a pH around 2, in a way it is the opposite of the previous step, except boiling something in strong acid would dissolve pretty much the entire thing by attacking the O links that binds the sugar monomers.
I don’t know exactly what he hopes to get rid of with that, there is some sense in assuming that was wasn't destroyed by the base may be sensible to acid, but I don’t think hot lemon juice constitutes a proper acid hydrolysis. however I wouldn’t be surprised if the exoskeleton of a crab was calcified (CaCO3) at some extent. I guess that would explain the white color. If that is the case, yes, an acid bath would dissolve the calcium carbonate.
That sort of works, whatever the point was, but is not enough. So he prepares this time an hydrocloric acid bath, that is chemically almost the same but stronger. I checked online and while boiling acid would definitely dissolve cellulose, well... chitin as we said is slightly more resistant. Also time and temperature are important for this type of reactions, note that he doesn’t actually put the thing to a boil but "only" at 80°C (176°F for people who can't have proper units).
This time the shell it is much clearer, I don’t know exactly why there is almost an entire layer worth or crab dandruff detaching, maybe it’s made in layers in the first place. The issue now is that the crab shell seems extremely weak and soft.
The beige-ish thing is collagen powder to make gelatin, he cooks it as intended and then coats the crab with it. That will both reinforce it structurally, and give it some sort of polish because rough surfaces are not compatible with being see-through.
I’ll skim very fast on the sodium alginate part to make the eyes of the crab, calcium causes sodium alginate to turn into a gel, so if you have drops of that stuff fall in a high-calcium solution, the outside of the drop will gellify, giving you a nice round bubble of alginate, it’s a pretty well known food chemistry experiment, typically to make fake fish eggs like caviar.
He puts the eyes in place, puts the shell back on the crab and behold ! The most beautiful crab in the world !
But no matter how magnificient of an abomination he just build, that is not even remotely as see-through he had hoped, so it must be crushed, destroyed, annihilated, and tuned into a “knife”. it is thus blended it to a powder, and boiled.
Now remember that chitin is a polymer, therefore it makes strands. Blending it like a maniac will at best give you slightly shorter strands that regular blending but you will still have strands of chitin swimming in that soup. If you put that in water and heat it, this whole mess of threads will tangle and form some sort of gel, and if you dry it hard enough this will result in a very strong material (that is always the same basic principle that allows him to make knifes from wacky shit).
So he makes a pellet out of the shredded-boiled purified crab keratin and sharpens it into a better claw for the crab. Too bad he doesn’t have a shell to protect his brain now ! Ha !
Lol, no I’m joking ! arthropods have their brain and spinal chord on the belly side.
First of all, I am not an expert in arthropod exoskeleton chemistry, even with seven billion people on earth there’s probably not more than a handful of such weirdos. But I have a decent understanding of biochemistry and can read wikipedia.
So what is Chitin ? Long story short, it’s like cellulose, a long polymer of sugar that plant cells use to make walls. But unlike cellulose chitin is made by animals and the sugar monomers are slightly modified for extra resistance (= lighter for equal strength) because animals have different issues than plants.
Anyway, chitin in its pure form is supposed to be translucent, so he’s trying to clean the crab shell from anything that is not chitin to at last have a decent see-through crab. never thought i'd say that one day.
How will he do that ? First he presents to us his magnificent ozone machine : ozone is chemically speaking O3. You know that oxygen from the air (O2) tends to oxidize stuff right ? Well O3 is the much more aggressive version of that, don’t breathe it I guess ?
As far as I know the main way to obtain ozone is to generate an electrical arc, like with a Tesla coil or something, I don’t know how his machine works but I assume it generates the ozone in its casing and then just bubbles it in the water, pretty sure it is not made _from_ the water.
Now, generally speaking in the living world, color is obtained through pigments : small molecules that often have a cyclic structure. An other possibility is through the use of metallic ions (like in your blood, provided you have some) but then the color is rarely the obective. Anyway, those pigment molecules are somewhat fragile and a good way to destroy them is to use an oxidant. That’s what he demonstrates when bubbling ozone in the orange water : the color disappears.
So he does that with the crab shell, there’s no before/after picture so it’s hard to tell how effective that was. As an added benefit, the oxydation probably helps destroying some unwanted organic trash on the shell.
Next he takes some magnesium metal and puts it in water. From its native state, Magnesium needs to get rid of two electrons to have a nice smooth outer electronic shell, and it will gladly give them to water. So the reaction is Mg + 2 H2O → Mg2+ + 2 OH- + H2. Thankfully magnesium metal is not as angry as sodium or Potassium, that straight up explode in water. Kiwami gets to live an other day.
The important part here is that this makes the solution extremely basic (the OH- part), that would be pretty aggressive for your skin and that’s the point : boiling the crab shell in that stuff will completely ruin most proteins and whatever else is in the shell. Being basic also will saponify any oils and fats that may be present (long story short : make them water-soluble) for extra cleanliness. Chitin is largely unaffected by that because of complicated reasons.
That worked pretty well, anything that had a color was completely destroyed, now the shell is a nice clean white. But it’s completely soaked with caustic soda, so he boils it in clear water to wash it. By the way, the reason he boils it is because that makes it easier for things to diffuse in and out of stuff, you could cold-cook pasta if you really wanted, the water would eventually find its way into the noodle but it’s inefficient and kind of gross. He then checks with the pH paper which returns neurtal.
He then prepares a bath of citric acid to clean the shell even more. Citric acid is kind of “mild” with a pH around 2, in a way it is the opposite of the previous step, except boiling something in strong acid would dissolve pretty much the entire thing by attacking the O links that binds the sugar monomers.
I don’t know exactly what he hopes to get rid of with that, there is some sense in assuming that was wasn't destroyed by the base may be sensible to acid, but I don’t think hot lemon juice constitutes a proper acid hydrolysis. however I wouldn’t be surprised if the exoskeleton of a crab was calcified (CaCO3) at some extent. I guess that would explain the white color. If that is the case, yes, an acid bath would dissolve the calcium carbonate.
That sort of works, whatever the point was, but is not enough. So he prepares this time an hydrocloric acid bath, that is chemically almost the same but stronger. I checked online and while boiling acid would definitely dissolve cellulose, well... chitin as we said is slightly more resistant. Also time and temperature are important for this type of reactions, note that he doesn’t actually put the thing to a boil but "only" at 80°C (176°F for people who can't have proper units).
This time the shell it is much clearer, I don’t know exactly why there is almost an entire layer worth or crab dandruff detaching, maybe it’s made in layers in the first place. The issue now is that the crab shell seems extremely weak and soft.
The beige-ish thing is collagen powder to make gelatin, he cooks it as intended and then coats the crab with it. That will both reinforce it structurally, and give it some sort of polish because rough surfaces are not compatible with being see-through.
I’ll skim very fast on the sodium alginate part to make the eyes of the crab, calcium causes sodium alginate to turn into a gel, so if you have drops of that stuff fall in a high-calcium solution, the outside of the drop will gellify, giving you a nice round bubble of alginate, it’s a pretty well known food chemistry experiment, typically to make fake fish eggs like caviar.
He puts the eyes in place, puts the shell back on the crab and behold ! The most beautiful crab in the world !
But no matter how magnificient of an abomination he just build, that is not even remotely as see-through he had hoped, so it must be crushed, destroyed, annihilated, and tuned into a “knife”. it is thus blended it to a powder, and boiled.
Now remember that chitin is a polymer, therefore it makes strands. Blending it like a maniac will at best give you slightly shorter strands that regular blending but you will still have strands of chitin swimming in that soup. If you put that in water and heat it, this whole mess of threads will tangle and form some sort of gel, and if you dry it hard enough this will result in a very strong material (that is always the same basic principle that allows him to make knifes from wacky shit).
So he makes a pellet out of the shredded-boiled purified crab keratin and sharpens it into a better claw for the crab. Too bad he doesn’t have a shell to protect his brain now ! Ha !
Lol, no I’m joking ! arthropods have their brain and spinal chord on the belly side.
10: Donal
2021/01/25 1:11
Kiwami: sharpest crab knife
Me: Oh so he's gonna sharpen a big crab claw or something
Kiwami: sharpest 'crab' knife
Me: Oh so he's gonna sharpen a big crab claw or something
Kiwami: sharpest 'crab' knife
11: Kalehsaar
2021/01/24 23:19
crab: "i never asked for this"
12: Shu-Ho Hsiao
2021/01/25 5:35
Normal people: it’s a crab
Him: ”Knife”
Also him: “Barbie”
Him: ”Knife”
Also him: “Barbie”
13: Laura Voss
2021/01/24 23:13
me watching him bleach the crab shell: but what does this have to do with making a knife -
shark model: :V
me: ...oh.
shark model: :V
me: ...oh.
14: inoob26
2021/01/24 21:48
so this is how they make weapons out of the Crab boss in Monster Hunter
15: Nero Vance
2021/01/25 5:43
Plot twist: he's making the knife to kill whoever killed the crab for the sake of poetic justice.
16: Niko Ivan
2021/01/24 23:18
"shark deep throat cucumber" fetish...
17: Greg Fraser
2021/01/25 6:39
Crocodile Dundee. But Japan.
"You call that a knife?"
*Whips out crab*
"THAT'S a knife."
"You call that a knife?"
*Whips out crab*
"THAT'S a knife."
18: Luis Gonzalo Antezana Ayala
2021/01/25 0:08
The 5M special it's going to be human bones.
19: Cloud daemon
2021/01/24 21:46
This dude is the embodiment of cave Johnson's statement "science is not about why, is about why not"
20: Ivan Padilla
2021/01/24 23:02
Next: Sharpest skin knife in the world
21: Mindling
2021/01/24 23:11
surely there must be a moment when you're making these that you think "is this really worth it? Do I really want to do this?"
You're a stronger man than me, Mr Kiwami Japan
You're a stronger man than me, Mr Kiwami Japan
22: Kit Gartland
2021/01/25 9:38
Shark model: has a partially clear body while the crab one does not
Kiwami: and I took that personally
Kiwami: and I took that personally
23: Lag Incarnate
2021/01/25 1:55
Kiwami is such a dang genius that even his knives are progressing to crab. The Simic would be proud.
24: luckybandit_
2021/01/25 0:48
Can you imagine new viewers being confused while we’re here like:
oh yeah I forgot about the _vibrating doll_
oh yeah I forgot about the _vibrating doll_
25: Greg Fraser
2021/01/25 6:31
Everybody: By now we understand his formula and won't be surprised by the weird stuff he does anymore.
kiwami: Hold my cow...
kiwami: Hold my cow...
26: короткий член
2021/01/24 23:17
I'm still waiting for him to make a knife out of a pillow
27: Amix
2021/01/25 0:37
I think we all know that if his guy was ever hired to make a planet ending weapon we would have to say our goodbyes almost instantly
28: Flair
2021/01/24 21:51
Plot: Man disappointed by quality of crab model, makes one from a real specimen.
29: Wireless Wizard
2021/01/25 1:28
When I saw the notification for this video, I literally gasped and whispered, "The King." The King has returned.
30: Pixel Sky
2021/01/25 0:39
You should try “making the sharpest knife in the world made out of mask”
31: Toxer 69
2021/01/25 1:42
Still waiting for "sharpest knife made out of knife"
32: Sarah .S
2021/01/25 3:48
"There is no much natural replacement for plastic"
This man: Hold my knives
This man: Hold my knives
33: Darthane
2021/01/24 21:54
In the far future, after humanity has carcinized, we will all be kitchen knives.
34: ӿøῇχէ
2021/01/25 1:32
What this channel used to be: "Let's make a sharp knife out of weird random shit!"
What it is now: "Let's do some weird random shit... and maybe quickly make a knife at the end. Also, cucumbers".
What it is now: "Let's do some weird random shit... and maybe quickly make a knife at the end. Also, cucumbers".
35: Creepy :
2021/01/24 23:14
I haven’t watched this channel for 7 months and I’ve never been this happy to see a cow spit out water
36: Thomas Müller
2021/01/24 22:52
Father: Where have you been?
Daugther: I was Just watching Netflix with my Boyfriend. 3:24
Daugther: I was Just watching Netflix with my Boyfriend. 3:24
37: JBPuffin
2021/01/24 23:00
Imagine someone came at you with a full-sized butcher knife made of this stuff though. I would be absolutely terrified of the dedication required...
38: Spider Boots
2021/01/24 22:49
if you reverse it it looks like someone playing god and making a crab
39: James Pigeon
2021/01/25 2:55
i like to think that in japan theres this super powerful mad scientist who just makes knives out of crabs
40: Maria Pía Amador Yepez
2021/01/25 2:27
los ecuatorianos: nosotros sabemos a la perfeccion la anatomia de un cangrejo
41: BLUE GHOST
2021/01/24 23:15
For once i just want to see this guy make a knife with actual steel or metal
42: theBabyDead
2021/01/25 5:32
This guy makes me feel like, with anything he does, he just breaks down anything he has to the atomic level, adds some stuff and then makes it into something hard again in the shape of a knife xD
43: Iam Ravara
2021/01/24 21:42
these projects are preventing him from getting bored enough to kill someone
44: Adrian Ascael
2021/01/25 1:00
Read description: "kitchen knife"
umm... okay.
umm... okay.
45: Upside_dumb
2021/01/25 1:02
i just love how he pulls out an ozone generator like it's nothing
46: 伊東レイ
2021/01/24 23:16
時間をかけて透明にしたかにの甲羅砕いた時「えっえっえっえっ？？？せっかく標本できたのに…」って思ったけどこの人の完成系は包丁だったことを思い出した
47: Gary Smoogy
2021/01/25 1:33
This guy is like a real life dr. Stone
48: nameruku
2021/01/24 23:55
Crab : Was I even good to eat ?
Death: Dude he didn’t even eat you, he made a knife out of you
Crab : *he made a what*
Death: Dude he didn’t even eat you, he made a knife out of you
Crab : *he made a what*
49: Adhy K. Wardhana
2021/01/25 0:31
After all this time, that doll shaker still bother me somehow lol
50: E Valenic
2021/01/25 6:35
"Excuse me while I put my magnesium pellets in my boiling water"
What in the god damn
What in the god damn
