Bare Hand Bottle Busting- Science Investigation
ฝัง
- เผยแพร่เมื่อ 30 ส.ค. 2016
- Kevin and I get to the bottom of a science mystery using only our wits and rugged good looks.
Check out Kevin's channel- / thebackyardscientist
Thanks to Nathan for the High Speed camera. If you need a High Speed camera to rent for super cheap check him out. Insanely low prices for great gear- www.aimed-research.com/
MUSIC-
0:12- Ceral Killa- Blue Wednesday- / bluewednesday
4:19- Berlin- Andrew Applepie- www.andrewapplepie.com/
Summary:
Using the Scientific Method and with the help of the Backyard Scientist, we determine how someone can break a glass bottle with their bare hands.
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****************************************
I make videos like this once a month all year long while supplies last:
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![[4K] TREASURE(트레저) “KING KONG” Band LIVE Concert 킹콩은 라이브를 찢어🦍 [it’s KPOP LIVE 잇츠라이브]](http://i.ytimg.com/vi/p8bLLOxPDD8/mqdefault.jpg)
You two guys are definitely Phineas and Ferb
ferb*
Kevin, I know what we're doing today!
*THERES A HUNDRED AND FOUR DAY OF SUMMER VACATION*
My childhood :(
Zomhunter 3455 only 19 more days
When they both had different theories I was like oh no it’s like the two smart kids in class getting different answers
It never ends well
When you anser option A, but the actual answers are either B or C
And then the one that was wrong fights the one the was right after class but there both weak so it ends in a chess game
i ones was the smart one in that
I agree
This never gets old watching it again.
ikr
I knoe
yep
ong
Ye
Me after watching this video: “excuse me, friend, can I interest you in this delicious bottle of hot water?”
Literally every time:
Mark Rober: High-Speed Projectiles!
Backyard Scientist: Set Everything on Fire!
FIRE
lol
Together : A High speed projectile while on Fire!
Brother
Jacob Lee flaming bullets
Rubber mallet is a good idea. I can't tell you how many times I hurt my hand trying this.
Hey Grant, sad nobody has acknowledged your comment... Anyhow keep up the good work!
Hi Grant
👍
I use a foot-long piece of 2X4, so the bottle remains totally unsealed. That's for all the people who insist that it won't work unless filled all the way to the top, so your hand will compress the water.
Ouch.
I learned to do this forty plus years ago, while in college. I always did this the hard way, with coke bottles having thicker glass. Plus seeing why this works would have led to better results.
4:03 the moment when you are absolutely, and the absolute joy, these slomo cams brought a new dimension to science
5:22
Who the hell screams ”gonnorhea” when they hurt themselves
😂
He does
Pretty sure his religion stopped him from swearing. He’s mormon I think
@@KobeKeats yikes, maybe one day he will fix that
Ghost Lul should’ve worded it differently
Imagine pulling out some kerosene snowballs during a snowball fight
😂😆🤣
sounds like them
Finland has now ideas
Anti-Molotov inbound!
Uncle Jerry got PTSD back to 'nom
From a fluid dynamics perspective:
It seems to me that hitting the top of the bottle sends a shockwave through the water. Shockwaves have extremely low pressure at the front of the shock and extremely high pressure at the back of the shock. When the front of the wave reaches the bottom of the bottle, that low pressure zone generated by the shockwave induces cavitation (the little pocket of vapor you see at the bottom of the bottle). The water cant hold onto the air bubbles that are already dissolved in it or stay in its liquid phase in this low pressure zone, similar to why boiling water is much easier at the top of a mountain; the atmospheric pressure is less. When the energy of the shockwave dissipates, this vapor bubble (cavitation) collapses...very, very, violently. Often times at supersonic speeds. The force of that vapor bubble collapsing at supersonic speeds (which brings the water crashing down onto the bottom of the bottle), is what breaks the bottle, in my opinion. Perhaps Schlieren imaging could confirm this.
It would follow that the CO2 bubbles in carbonation interrupt this shock wave from passing through the liquid, and keep the wave from reaching the bottom with enough energy to induce cavitation. The low pressure zone generated by the shockwave would cause the CO2 bubbles to escape from the liquid, causing the foaming in the beer you see
This phenomenon is very similar to the cavitation seen in boat propellers. The propeller spins through the water, generating a low pressure zone behind the blades of the propeller, and when this pressure is low enough, the water can no longer stay in it's liquid phase, releasing any dissolved gas and changing phase to water vapor, generating the vapor bubble you see behind the propeller. When the energy from the propeller dissipates, these vapor bubbles collapse at supersonic speeds, changing the phase back to liquid and dissolving any air/gases back into the water, but at the same time gouging a chunk of metal out of the propeller.
Edit: I've edited this post to clarify a few things, thanks to those who commented below!
missed the part in the video where they showed the impact from the water shattering the bottle?
@@mrosskne I watched the full video. My thought is that the source of that impact is not from the water trying to catch up to the bottle, but from the collapse of the vapor cavity induced by the low pressure region near the shockwave.
@@c82153 alright, congrats on being blind i guess
@@mrosskne this may surprise you, but physically seeing a phenomenon doesn't always reveal the correct explanation.
@@c82153 actually its steam not air, your lowering the atmospheric pressure, causing the water to boil, so its not air its actually steam, same with cavitation on boat propeller, its not bubbles of air but steam, the water is actually boiling there is no air being released, if air was present in the water it would stop the cavitation from breaking the glass, that is why it has to be a water with no dissolved gases in it, when you lower the pressure of water, it boils giving off steam, not air, and the cavitation is the source of the glass breakage
"So as firm believers of science..." when you hear that
@@MarblesSC stop please
@Marbles BS who cares he doesn’t have to get it perfect
@@MarblesSC I could care less if he is a boy or a girl
@@MarblesSC don’t care, didn’t ask
@@MarblesSC Don't start your sentences off with "because".
I totally think that Mark Rober, Backyard Scientist and the Slow-Mo guys need to make some of these videos together
bit of william osman chucked in there for good measure
Tkor too!
The world needs this.
micheal reeves !1!1!
Get all of the TH-cam science people together in one video
*ENDS UP GOING TO MARS*
Me: It's definitely just air pressure
mark: It's not air pressure
Me: It's not air pressure
Lol
did that bottle at 1:50 say corona
@@macul76 yeah, isn't there a beer brand called Corona
@@gabulhiboakibaa yes
Hahahaha
I’ve watched this 3 times and TH-cam just suggested it again so looks like I’m watching it for a 4th. I feel so much smarter and happier after just watching Mark’s videos
I seriously love these 2 guys! I could watch them all day
Tried it at home.
Broke all the beer bottles in my fridge.
Now dad is beating me.
Thank you. *very* much...
Oh no
It didn't work
At least you stopped him from drinking
Oh... oh no
Zer0 Deaths sad
5:12 "this is glass"
jerryrig : "glass is glass and glass can break"
Jerry rigs a bottle
@@CheseBitez well can you make him human again?
Yes! Glad you did this! I, too, thought it was the air pressure forcing the liquid down. I was taught in my teens (in the 80's) by a friend to use wine bottles! No wonder they worked so well being non-carbonated. Thankfully, only about 3 out of 50 have broken in my hand while attempting this.
I love your videos! You do such a good job on them!
how to mine glass in minecraft 2:53
This is the most underrated comment ever
Minigod95 not really
Minigod95 wrong
Underrated
Sunny Uy Get out of TH-cam
*The Slow-Mo Guys wants to know your location*
Mark Rober used the reverse card, therefore the video was recorded in the backyard
Bruh
Except the Slow Mo Guys did this 3 years before this video was created.
Want* not wants
AdrianMaster wAnT nOt WaNtS
I skipped the first part so all I heard was
“you should set those on fire”
But I only saw the kids so i was like
“Set ThE kiDS oN FiRE?”
I’ve been waiting for this video for so long
2:52 Aww whos a good bottle? Pat pat*
No I'm not! *smashes*
Yes you are
I loved that part
Wow how did you notice that?
Shrek
*SET IT ON FIRE*
-Kevin (The Backyard Scientist) 2016
We do that with beers at parties. Not to break glasses, but to see people panicking, putting the bottle in their mouth trying to deal with the foam. Quite funny.
The fact that they have the "Corona Extra" Beer makes this even better xD
I love it when he shouts in pain Gonorrhea 5:22
That’s what I thought I herd.
David Baranski I thought he said diarrhoea lol
The Mormons I knew growing up were the most creative at cussing. Hundreds of different, often far worse than the curses they were replacing, gross and shocking replacement words. Just super creative mouth-farters.
@@janelle6697 took me a long time to figure it out as well
666 likes
Funny how he uses a corona bottle for the water
James Storie lol
ik right
Lmfao
*+virus*
Lmfao
Alright ima invite my friends over and give them a beer bottle with hot water it nail polish remover and hit the bottle. What kind of day is that
Congrats On 16 Million !! :)
"You should set those on fire"
Yes throwing fire balls at kids will be fun
🤣
It would though 💀
Especially during summer
Goodness gracious great balls of fire
Mario
3:55 Says they put red colour in The bottle to see The break easier.. shows clip of a bottle with a clear liquid
It's red
Trackster I’m pretty sure it is red, I believe it has to do with the red effect.
Either I am color blind but I see no red at all it is just clear
its not the same bottle
PolaroidFreak 600 oh yeah
Thank you for bringing me here Steve
Theory #2 is the physics of a mean practical joke. When someone motions to "clink" your bottles together, instead of "clinking" the necks together, slam your bottle on top of their bottle and watch their beer spill on the floor lol
I knee a guy in college that did that with his cheap wine bottle! Worked great on a full beer, but half empty was just a little foam
5:23 I'm not convinced Mark didn't say "Gonorrhea" in a pained voice
He does
Keep replying
@@Jeff-qz7rx ok
5:22
nope .. he said "Diarrhoea" LOL
BEST science channel on TH-cam, I wish he would post more often
Well, this and SmarterEveryDay
Same here, oh and I already knew what happened before watching
Also I'm in 5th grade
*****
Yay! Do I smell a collab?
also vsauce and hansentertainment
Me 2
I knew the explanation, but it's interesting to see it tested.
Two things this video impress me is that
1. They came up really easy way to test their theory.
2. The slow-mo technology makes it so easy to prove the second theory.
That's such a amazing combination of big brains and technology.
"I'm pretty bored today so I'm gonna smash bottles."
youtube in a nutshell
5. Don’t chicken out:
Shows mark hitting his hand and then mumbling ‘gonorrhoea!’.
Nice
OWWWWW!!!
*AAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH*
😂
O
Ok
I really hope the two of you pair up, it will be the best thing that has ever happened
I love it how he explains it so easily
Facts
did he say gonorrhea when he hit his hand on the bottle xD 5:21
Yes😂😂XD
lololol
I literally thought the same thing
Nailed it
He said "god that really hurt"
I wish he was my science teacher because he would be so fun
Jada Penny my science teacher got me a detention for laughing
BLE shadow U.S Gaming BE Xd
Mars Forest
You are so true lol
Yeah
I love the backyard scientist and mark
Who knew the scientific method could be such fun!
He is Obviously the Fun Uncle
Of course
Sub to me I will sub back
+Canyouhelp Withnovideosmereachasubscribers DONE
+RANDOMBROS MZM I subbed back
So... he's a funcle ?
I am using this for my science project thanks and I’ll put you as my source of information
Beogoe so how did you do on your science project
Slow motion cameras make experiments such as these soooo much more fun and you can actually get to the bottom of why it happens. Wonder if my iPhone slowmo will also show it? 😂
I see what you did there.
Yep. It's the Water-Hammer effect. The water and bottle are pulled together by the vacuum created from the initial strike. The water and bottle come together rapidly, and since water is in not compressible and has high mass, it's like hitting the glass with dense solid object and the glass shatters.
I love how he’s talking about ready player one before the movie came out
It was a book first
@@bakerbrooksjr5102 Hello there mr obvious!
I still need to watch RPO Iol
@@despacitospider7590 Same
General kenobi
0:00
Those trees behind him looked like wings ._.
Ya😆😂😹⊙.☉ ⊙.☉
Yeah 😂
The first I heard of this was in college, with Sobe bottles. My coworker bought a Sobe bottle so we could try it out. The story we heard was that you had to keep it sealed for it to work.
Hitting it gently, we could hear a loud cracking sound as the vacuum collapsed.
Hitting it harder it broke easily.
We tried with an opened bottle that was refilled. Cap on or off, it took a harder hit to get the cracking sound. My hand hurt too much to get it to break with the refilled bottle. I would love to see a test rig built to see the impact required for a sealed bottle vs an open bottle vs a refilled bottle with the cap on
Your Videos are so interesting, my dad showed me one, a few weeks ago, and now my friend and me are so exited in watching your videos.
Ps. Sorry for my englisch😂 I am german
Mark Rober: has a corona beer in his hand
*intense breathing*
Good I wasn’t the *ONLY* one thinking of that
Not intence breathing, no breathing
i went to read the comments to see if any one talked about that, lol
@@noelward7491 yeah no breathing.
*JUST A COUGH*
I’m glad you used Corona bottles😂 fitting for this time
Sabulous Fabulous huh how did he know? 🤔
Sabulous Fabulous NO
John Hursey do, you not understand ?
Corona is a Alcoholic beverage
THE_WATER_WIZARD But I’m talking about the virus
John Hursey oh,
Mark: so either Kevin has superpowers-
Kevin: *shakes head*
Copied
I didn’t copy it I might have seen a comment like this and forgot then made it but i’m not about copying others.
this duo combined with nile red could probably delete the world
0:28 Nowadays seems like Corona is takin its revenge, ain't it?
It's marks fault
Im next????
@@FireshotAJ probably
@@gufostanco220 ok
@@FireshotAJ ready?
" just to be more consistent"
*also cause I'm a wuss
I was dying 😂😂 brush I would too
Brush?
@@taylang6101 ikr 😂😛
Very cool trick!!! I tried it myself mind blown!!
I've been drinking beer along time. Why did it take 5yrs for this to pop on my feed!
Mark literally u are the best you tuber on TH-cam keep up the good work
Ikr no TH-camr I've seen puts this much effort and creativity into their videos
If you guys like this kind of video, you should check "smarter every day". His videos are really awesome
+Mateus Hokari but mark is an overall nicer guy
0:34
Mark: "...so either Kevin has some superpowers..."
Kevin: *nods*
quick way to test the second round of theories would be to pull a vacuum in the bottle and see if it breaks
With cap on, it is the vibration of forces exchanging positions like air changing with water force and bottle force with water. Also the bottom of the bottle Is heavier and more dense than the top area. Leads to gravitational pull
05:24
That gave me the greatest nostalgia feeling I've ever had :3 So unexpected I wasn't prepared :o
Mein-Kanal-Hat-Einen-Viel-Zu-Langen-Namen me too
5:21 did he say “gonorrhea.”
I believe so. I heard the same thing and checked the comments to see if it was just me lol
5:23
test comment
Omg lol
I love your content.
Great video
On the foaming of beer, I did a research project in chemistry at uni with my professor. And we found that not only do you find that bubbles are made, and then increased
because of a chain reaction, but this happens more so in beer than any
other drink! And that's because that beer is just crazy good at foaming because the bubbles are more stable, mostly due to the fact that the pH is higher in beer than cider, soft drink, and other carbonated drinks. The more you know!
Long commet
Kid: *Throws snowball at another kid*
The other kid: AAHH IM ON FIREEE
Parents: ...
Mark: AHH WRONG SNOWBALLS
Cringe
3:30 Without seeing the rest of the video I'd assume it's "water hammer" a.k.a. the volume of rapidly moving water hitting the bottom. And that movement is obviously caused by the vacuum. Similar mechanism is used during water forming to create curved surfaces out of metal for some cars.
The beer fizzing up part explains why just slamming the bottom of a beer against a table makes it froth up badly.
I can barely tell this video is from 2016. You've been incredibly consistent with it.
Oh my god! Ready player one is my favourite book ever!
Same here.
Juicemoose24 i second that
the shock from your hand travels through the bottle, and meets at the bottom center, as well as the water briefly lifts up(or if there is no liquid, its because of air pressure), and slams back into the glass, both those forces together make the bottle break, easy
Bro just smacked corona
You're definitely a nerd, a very cool nerd. I love every video and enjoy your explanations of science. Wishing you well and much success.
That book seemed
Interesting.. You're actually making me debate if I should get the audible trial or not.. 🤔
When he hits the bottle with the mallet, he could be decreasing the volume of the bottle by pushing in the cap, thereby increasing the pressure, no?
Very tiny amount
Even if that were the case (which it likely *is* but isn't the cause of the bottle breaking) it would be such a small amount that it wouldn't break the bottle.
A college friend would always use his wine bottle and cheers people with beer bottles to get them to foam up. I noticed that if the level of carbonated beverage was below the shoulder of the bottle it did not effect it as much. I would love to see some high speed of this difference
I saw this from the slow Mo guys and it creates a vacum
that slow mo with the red bottle is so satisfying to hear
Point 3 is wrong, if you have a higher vapour pressure liquid, it will fill more easily the bottom with gas (similar to what happens with the beer). You actually need the opposite, so there is nothing in between the liquid and the bottom when they meet again, this will maximize the impact velocity.
ive never had this happen when using a counter top to take off a bottle cap. is it possible that holding it at an angle kinda diffuses the force and causes the bottle not to break.
This channel gives me A+ at my science and chemistry tests than My teachers vids XD
2019 And that movie has been made.
May I suggest making a "short" out of these slowmo clips of the glass breaking and airpockets... 2:52 these type of clips.
If you want to know a little bit more about, check Physics Girl video! She talks about cavitation, very interesting.
Just made some smoothie while watching this, hope you have a nice day. :)
enjoy
thanks! you to!
Nobody:
Not a single soul:
Kevin: *YOU SHOULD SET THEM ON FIRE*
DogeMLG!!! 2906...... I’m starting to think Kevin is an evil genius..... I’m gonna go do this.....
0:53
I’ll drink to that!
Not yet you won’t Kevin.
*BONK*
....
*hahaha*
Mark really drank two cases of beer and decided to reuse the bottles for scientific purposes.
How much beer did you drink during this
None it all went to the ground
As much as a pizza box does
He said at the beginning that he doesn't drink
They gave it to the doge
Look at his bio. He went to BYU for a while.
Unless he's Jim McMahon, he a Mormon.
(He also filmed some of the Pinewood Derby
car video, in a Mormon church. I'm guessing
a Stake Center, since the cultural hall has wood
floors.)
steve
Who wants to see more flaming snowballs
kevin the backyard scientist has a video on it
It makes sense now. A vacuum sucks things into it to fill the empty space, that causes the water to hit the bottom really hard, which then breaks it.
i needed answers n now ik thank you!!