You two guys are definitely Phineas and Ferb

@Matbot-gk8db

5 жыл бұрын

ferb*

@TheSwordSmasher

4 жыл бұрын

Kevin, I know what we're doing today!

@cravingxhunter6934

4 жыл бұрын

*THERES A HUNDRED AND FOUR DAY OF SUMMER VACATION*

@RagdollGallery

4 жыл бұрын

My childhood :(

@yellowmango9318

4 жыл бұрын

Zomhunter 3455 only 19 more days

Rubber mallet is a good idea. I can't tell you how many times I hurt my hand trying this.

@cianbas

7 жыл бұрын

Hey Grant, sad nobody has acknowledged your comment... Anyhow keep up the good work!

@ilikebiscuits6232

7 жыл бұрын

Hi Grant

@Aperson-sv2hc

7 жыл бұрын

👍

@wbeaty

7 жыл бұрын

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.

@mockingjay_2397

7 жыл бұрын

Ouch.

This never gets old watching it again.

@Westwoodshadowgaming

3 жыл бұрын

ikr

@marthashanahan

3 жыл бұрын

I knoe

@drew8238

3 жыл бұрын

yep

@fariskhanfar3704

3 жыл бұрын

ong

@seanthompson7473

3 жыл бұрын

Ye

Me after watching this video: “excuse me, friend, can I interest you in this delicious bottle of hot water?”

When they both had different theories I was like oh no it’s like the two smart kids in class getting different answers

@jacksanne1528

4 жыл бұрын

It never ends well

@brianlovebear

4 жыл бұрын

When you anser option A, but the actual answers are either B or C

@cguy8998

4 жыл бұрын

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

@marceltelang7825

4 жыл бұрын

i ones was the smart one in that

@hantheman7

4 жыл бұрын

I agree

Literally every time: Mark Rober: High-Speed Projectiles! Backyard Scientist: Set Everything on Fire!

@dwaynehunnicutt1196

4 жыл бұрын

FIRE

@alphajakethesnake2942

3 жыл бұрын

lol

@saruwataizuki2740

3 жыл бұрын

Together : A High speed projectile while on Fire!

@Ravineking678

3 жыл бұрын

Brother

@the-anhpham3364

3 жыл бұрын

Jacob Lee flaming bullets

"So as firm believers of science..." when you hear that

@nathanholyland9493

3 жыл бұрын

@@MarblesSC stop please

@CuriousVel0city

3 жыл бұрын

@Marbles BS who cares he doesn’t have to get it perfect

@CuriousVel0city

3 жыл бұрын

@@MarblesSC I could care less if he is a boy or a girl

@CuriousVel0city

3 жыл бұрын

@@MarblesSC don’t care, didn’t ask

@yeahyeah863

3 жыл бұрын

@@MarblesSC Don't start your sentences off with "because".

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!

@mrosskne

3 жыл бұрын

missed the part in the video where they showed the impact from the water shattering the bottle?

@c82153

3 жыл бұрын

@@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.

@mrosskne

3 жыл бұрын

@@c82153 alright, congrats on being blind i guess

@c82153

3 жыл бұрын

@@mrosskne this may surprise you, but physically seeing a phenomenon doesn't always reveal the correct explanation.

@Celcius1

3 жыл бұрын

@@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

5:22 Who the hell screams ”gonnorhea” when they hurt themselves

@HedgesUK

4 жыл бұрын

😂

@sonicgaming904

4 жыл бұрын

He does

@KobeKeats

4 жыл бұрын

Pretty sure his religion stopped him from swearing. He’s mormon I think

@ToadrixAce

4 жыл бұрын

@@KobeKeats yikes, maybe one day he will fix that

@KobeKeats

4 жыл бұрын

Ghost Lul should’ve worded it differently

I totally think that Mark Rober, Backyard Scientist and the Slow-Mo guys need to make some of these videos together

@WILLYBREATH_v

5 жыл бұрын

bit of william osman chucked in there for good measure

@ashtar3876

5 жыл бұрын

Tkor too!

@deedevon7468

5 жыл бұрын

The world needs this.

@marionemanalo4510

5 жыл бұрын

micheal reeves !1!1!

@WyvernApalis

5 жыл бұрын

Get all of the KZread science people together in one video *ENDS UP GOING TO MARS*

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.

I’ve watched this 3 times and KZread 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

Imagine pulling out some kerosene snowballs during a snowball fight

@Bananman-nb8cr

5 жыл бұрын

😂😆🤣

@maulwurf9414

4 жыл бұрын

sounds like them

@1appa914

4 жыл бұрын

Finland has now ideas

@shrug1250

4 жыл бұрын

Anti-Molotov inbound!

@rezascorner2091

4 жыл бұрын

Uncle Jerry got PTSD back to 'nom

Tried it at home. Broke all the beer bottles in my fridge. Now dad is beating me. Thank you. *very* much...

@residentstar

4 жыл бұрын

Oh no

@LeoLeo-yi5yx

4 жыл бұрын

It didn't work

@kaiser9598

4 жыл бұрын

At least you stopped him from drinking

@kingofducks3156

3 жыл бұрын

Oh... oh no

@Jeff-qz7rx

3 жыл бұрын

Zer0 Deaths sad

4:03 the moment when you are absolutely, and the absolute joy, these slomo cams brought a new dimension to science

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.

Me: It's definitely just air pressure mark: It's not air pressure Me: It's not air pressure

@thebestauthor8212

3 жыл бұрын

Lol

@macul76

3 жыл бұрын

did that bottle at 1:50 say corona

@gabulhiboakibaa

3 жыл бұрын

@@macul76 yeah, isn't there a beer brand called Corona

@BruhBruh-ww7hn

3 жыл бұрын

@@gabulhiboakibaa yes

@Imeverywhere0913

3 жыл бұрын

Hahahaha

5:12 "this is glass" jerryrig : "glass is glass and glass can break"

@CheseBitez

4 жыл бұрын

Jerry rigs a bottle

@aquathemage1680

4 жыл бұрын

@@CheseBitez well can you make him human again?

I seriously love these 2 guys! I could watch them all day

I love your videos! You do such a good job on them!

*SET IT ON FIRE* -Kevin (The Backyard Scientist) 2016

*The Slow-Mo Guys wants to know your location*

@oa9164

5 жыл бұрын

Mark Rober used the reverse card, therefore the video was recorded in the backyard

@kifah683

5 жыл бұрын

Bruh

@achalorocks

5 жыл бұрын

Except the Slow Mo Guys did this 3 years before this video was created.

@AdrianMaster

4 жыл бұрын

Want* not wants

@NS-hw5wz

4 жыл бұрын

AdrianMaster wAnT nOt WaNtS

The fact that they have the "Corona Extra" Beer makes this even better xD

I’ve been waiting for this video for so long

2:52 Aww whos a good bottle? Pat pat*

@TibiAltF4

5 жыл бұрын

No I'm not! *smashes*

@jayanthi1969

5 жыл бұрын

Yes you are

@TheoRO-sl6hh

5 жыл бұрын

I loved that part

@tolimpia

5 жыл бұрын

Wow how did you notice that?

@laceycoleman9603

5 жыл бұрын

Shrek

I love it when he shouts in pain Gonorrhea 5:22

@Mk5mod0

5 жыл бұрын

That’s what I thought I herd.

@janelle6697

5 жыл бұрын

David Baranski I thought he said diarrhoea lol

@DampeS8N

5 жыл бұрын

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.

@davidbaranski7718

5 жыл бұрын

@@janelle6697 took me a long time to figure it out as well

@Conn0ro

4 жыл бұрын

666 likes

I love it how he explains it so easily

@steezyboiiii808

2 жыл бұрын

Facts

I really hope the two of you pair up, it will be the best thing that has ever happened

3:55 Says they put red colour in The bottle to see The break easier.. shows clip of a bottle with a clear liquid

@PendejoElgamer

5 жыл бұрын

It's red

@thegreatelv6408

5 жыл бұрын

Trackster I’m pretty sure it is red, I believe it has to do with the red effect.

@dennoncastro5232

5 жыл бұрын

Either I am color blind but I see no red at all it is just clear

@narlie2974

5 жыл бұрын

its not the same bottle

@cole7638

5 жыл бұрын

PolaroidFreak 600 oh yeah

how to mine glass in minecraft 2:53

@asteriskJohn

4 жыл бұрын

This is the most underrated comment ever

@minnamendoza5790

4 жыл бұрын

Minigod95 not really

@DC-em1qj

4 жыл бұрын

Minigod95 wrong

@HomebrandFishfood

4 жыл бұрын

Underrated

@karisalsman3870

4 жыл бұрын

Sunny Uy Get out of KZread

Thank you for bringing me here Steve

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?”

BEST science channel on KZread, I wish he would post more often

@elijah9822

7 жыл бұрын

Well, this and SmarterEveryDay

@wafflecake3767

7 жыл бұрын

Same here, oh and I already knew what happened before watching Also I'm in 5th grade

@elijah9822

7 жыл бұрын

***** Yay! Do I smell a collab?

@PennyHerbst

7 жыл бұрын

also vsauce and hansentertainment

@franciscoluz4193

7 жыл бұрын

Me 2

Funny how he uses a corona bottle for the water

@hhee7866

4 жыл бұрын

James Storie lol

@titipezehealing4348

4 жыл бұрын

ik right

@kaysonmoore7852

4 жыл бұрын

Lmfao

@user-wl8dp5cr2c

4 жыл бұрын

*+virus*

@sarahlindsay7030

4 жыл бұрын

Lmfao

I knew the explanation, but it's interesting to see it tested.

Congrats On 16 Million !! :)

5:23 I'm not convinced Mark didn't say "Gonorrhea" in a pained voice

@stianfourie4469

4 жыл бұрын

He does

@Jeff-qz7rx

3 жыл бұрын

Keep replying

@kennethtimorang8343

3 жыл бұрын

@@Jeff-qz7rx ok

@charliekath4

3 жыл бұрын

5:22

@nathanvarghese.

3 жыл бұрын

nope .. he said "Diarrhoea" LOL

"You should set those on fire" Yes throwing fire balls at kids will be fun

@Kyle-wt9ig

3 жыл бұрын

🤣

@deadly4113

3 жыл бұрын

It would though 💀

@gabrielflorea8124

3 жыл бұрын

Especially during summer

@geaux13saints56

3 жыл бұрын

Goodness gracious great balls of fire

@dragonpro14

3 жыл бұрын

Mario

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

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

"I'm pretty bored today so I'm gonna smash bottles."

@StmpnkKoala

5 жыл бұрын

youtube in a nutshell

I love how he’s talking about ready player one before the movie came out

@bakerbrooksjr5102

4 жыл бұрын

It was a book first

@lukthaman

4 жыл бұрын

@@bakerbrooksjr5102 Hello there mr obvious!

@despacitospider7590

4 жыл бұрын

I still need to watch RPO Iol

@eu11gaming71

4 жыл бұрын

@@despacitospider7590 Same

@hiworld8658

3 жыл бұрын

General kenobi

Who knew the scientific method could be such fun!

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

I wish he was my science teacher because he would be so fun

@osmmartinez3093

6 жыл бұрын

Jada Penny my science teacher got me a detention for laughing

@MushyteethOninsta

6 жыл бұрын

BLE shadow U.S Gaming BE Xd

@jeffreyoconnor3547

6 жыл бұрын

Mars Forest You are so true lol

@thegamer6178

5 жыл бұрын

Yeah

5. Don’t chicken out: Shows mark hitting his hand and then mumbling ‘gonorrhoea!’. Nice

@davido8550

4 жыл бұрын

OWWWWW!!!

@swedewtf

4 жыл бұрын

*AAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHH*

@HedgesUK

4 жыл бұрын

😂

@dodotwin2636

2 жыл бұрын

O

@dodotwin2636

2 жыл бұрын

Ok

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 love the backyard scientist and mark

He is Obviously the Fun Uncle

@hiromiarash172

7 жыл бұрын

Of course

@murti.6383

7 жыл бұрын

Sub to me I will sub back

@randombrosmzm2511

7 жыл бұрын

+Canyouhelp Withnovideosmereachasubscribers DONE

@murti.6383

7 жыл бұрын

+RANDOMBROS MZM I subbed back

@Vaylon.

7 жыл бұрын

So... he's a funcle ?

did he say gonorrhea when he hit his hand on the bottle xD 5:21

@tiana6102

7 жыл бұрын

Yes😂😂XD

@zatcity

7 жыл бұрын

lololol

@PengestAsian

7 жыл бұрын

I literally thought the same thing

@nathanb6976

7 жыл бұрын

Nailed it

@seanchia8062

6 жыл бұрын

He said "god that really hurt"

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.

I've been drinking beer along time. Why did it take 5yrs for this to pop on my feed!

I am using this for my science project thanks and I’ll put you as my source of information

@The_Liberty_Reporter

4 жыл бұрын

Beogoe so how did you do on your science project

0:00 Those trees behind him looked like wings ._.

@RandallTechnik

4 жыл бұрын

Ya😆😂😹⊙.☉ ⊙.☉

@n4titv668

4 жыл бұрын

Yeah 😂

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

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.

I’m glad you used Corona bottles😂 fitting for this time

@jotaromidoryia3981

4 жыл бұрын

Sabulous Fabulous huh how did he know? 🤔

@glitchdinvr4248

4 жыл бұрын

Sabulous Fabulous NO

@the_water_wizard952

4 жыл бұрын

John Hursey do, you not understand ? Corona is a Alcoholic beverage

@glitchdinvr4248

4 жыл бұрын

THE_WATER_WIZARD But I’m talking about the virus

@the_water_wizard952

4 жыл бұрын

John Hursey oh,

I can barely tell this video is from 2016. You've been incredibly consistent with it.

Bro just smacked corona

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

0:28 Nowadays seems like Corona is takin its revenge, ain't it?

@bananasstuff3344

4 жыл бұрын

It's marks fault

@FireshotAJ

4 жыл бұрын

Im next????

@gufostanco220

4 жыл бұрын

@@FireshotAJ probably

@FireshotAJ

4 жыл бұрын

@@gufostanco220 ok

@gufostanco220

4 жыл бұрын

@@FireshotAJ ready?

Mark Rober: has a corona beer in his hand *intense breathing*

@TheShadowXI

3 жыл бұрын

Good I wasn’t the *ONLY* one thinking of that

@noelward7491

3 жыл бұрын

Not intence breathing, no breathing

@fatimaalkholi9516

3 жыл бұрын

i went to read the comments to see if any one talked about that, lol

@TheShadowXI

3 жыл бұрын

@@noelward7491 yeah no breathing. *JUST A COUGH*

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? 😂

@KosstAmojan

6 ай бұрын

I see what you did there.

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.

Mark literally u are the best you tuber on KZread keep up the good work

@martamoore5271

7 жыл бұрын

Ikr no KZreadr I've seen puts this much effort and creativity into their videos

@Mateus_Coutoo

7 жыл бұрын

If you guys like this kind of video, you should check "smarter every day". His videos are really awesome

@HarveyTulloch

7 жыл бұрын

+Mateus Hokari but mark is an overall nicer guy

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.

I love your content.

Very cool trick!!! I tried it myself mind blown!!

0:34 Mark: "...so either Kevin has some superpowers..." Kevin: *nods*

5:21 did he say “gonorrhea.”

@tryAGAIN87

3 жыл бұрын

I believe so. I heard the same thing and checked the comments to see if it was just me lol

@ervinadrianadiscua4288

3 жыл бұрын

5:23 test comment

@Airy_Earth

3 жыл бұрын

Omg lol

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

@kylerrectec6134

Жыл бұрын

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

The beer fizzing up part explains why just slamming the bottom of a beer against a table makes it froth up badly.

" just to be more consistent" *also cause I'm a wuss I was dying 😂😂 brush I would too

@taylang6101

4 жыл бұрын

Brush?

@samjohnson324

4 жыл бұрын

@@taylang6101 ikr 😂😛

Kid: *Throws snowball at another kid* The other kid: AAHH IM ON FIREEE Parents: ...

@cbxcvbxvcxbxcvbxcvb9550

3 жыл бұрын

Mark: AHH WRONG SNOWBALLS

@cuppajoe2

3 жыл бұрын

Cringe

time flies by real fast

Great video

that slow mo with the red bottle is so satisfying to hear

How much beer did you drink during this

@daltostar7566

6 жыл бұрын

None it all went to the ground

@idel8002

6 жыл бұрын

As much as a pizza box does

@tymartin2519

6 жыл бұрын

He said at the beginning that he doesn't drink

@wh0kn0ws80

6 жыл бұрын

They gave it to the doge

@steveskouson9620

6 жыл бұрын

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

quick way to test the second round of theories would be to pull a vacuum in the bottle and see if it breaks

Hey, did you use nitroglycerin for the snowballs?

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!

@stinkinlinclon

Жыл бұрын

Long commet

Who wants to see more flaming snowballs

@squareone6224

5 жыл бұрын

kevin the backyard scientist has a video on it

May I suggest making a "short" out of these slowmo clips of the glass breaking and airpockets... 2:52 these type of clips.

Did they test the carbonation thing with the cap on? I wonder if that would make a difference

05:24 That gave me the greatest nostalgia feeling I've ever had :3 So unexpected I wasn't prepared :o

@toothbrush6239

4 жыл бұрын

Mein-Kanal-Hat-Einen-Viel-Zu-Langen-Namen me too

Oh my god! Ready player one is my favourite book ever!

@bossinater43

7 жыл бұрын

Same here.

@kauvik7019

7 жыл бұрын

Juicemoose24 i second that

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 am guessing maybe the pressure on the outside is making the bottom come off. I also think it has to do something with the water.

This channel gives me A+ at my science and chemistry tests than My teachers vids XD

That book seemed Interesting.. You're actually making me debate if I should get the audible trial or not.. 🤔

maybe is the force of the hit transfer to the structure of the glass, causing a virbration of sort therefore creating an internal stress causing it to break

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

wow the bottle breaking also removed all of the red food coloring

@JohnDirtySpleen

6 жыл бұрын

Carter Mangum lol

@Swa2Swa2

5 жыл бұрын

lol

is it making more energy then put in? or just more concentrated force?

What a team!

“You should set those on fire” >snowballs

2019 And that movie has been made.

this duo combined with nile red could probably delete the world

Wait if the force from the water smashing the bottom is larger than the initial slap where does the extra energy come from, the force made to make the vacume must have the same energy but just dispersed over the area so where does the extra energy come from