> continuums > méca-flu > phénomènes > water-cavitation-under-high-speed-thunderf00t

High speed camera reveals water-vacuum shockwave!

Thunderf00t - 2017-01-29

So I've been putting the new high speed camera through its paces....

For a long time I've enjoyed tormenting students with water in a vacuum tube.  It makes a chinking sound... but why?
Now for me.... you gotta bear in mind Ive been working with vacuums for over 20 years..... to me this is like watching the sun rise and seeing the earth spinning.  But its always fascinating to see people reaction to this.  Maybe I should do a react video on it! :-)

Many thanks to all those who support this channel through Patreon and made this video possible.
https://www.patreon.com/Thunderf00t

EEVblog - 2017-01-29

That high speed camera is worth every cent right there.
Awesome work

manu de hanoi - 2017-02-01

is that positive feedback dave ?

NotLife River - 2017-02-06

Hi Thunderf00t, where are those Lauren videos that you made? Why did you
delete them? Were you embarrassed? And here i was thinking that you
value honesty and truth and public scrutiny.

readyrepairs - 2017-03-23

oh dad, you show up in the strangest places!

Michael - 2018-03-01

Dave! Love your channel as well

Michael - 2018-03-01

Omega Alpha what videos are you referring to? Who is Lauren?

Cody'sLab - 2017-02-05

Ah perhaps this is what my mercury was doing!?

Brian Baker - 2017-03-29

In your pump video?

Bradyn Austin - 2017-11-27

Cody, you NEED one of these Phantom's bro.

Jeremy Cubbage - 2019-05-26

Cody, did you ever do a video on this?

HotelPapa100 - 2019-05-26

Would be kinda difficult to watch inside, wouldn't it?

Cody Slab - 2020-01-12

Ryan,
1. Stop pretending like you know what cavitation is now.
2. Cody’sLab is a dumbass who failed school and doesn’t know anything beyond cheap tricks. In comparison to Thinderfoot he is an ant.

KnifeKnut - 2017-03-21

He should try this in the dark to see if he gets any flashes from the sudden compression.

Regnar Andersen - 2019-05-26

@freexky I've never heard about that...

freexky - 2019-05-26

it's not much old, only since "1934 as a result of work on sonar" according to wikipedia. And i'ts a real nightmare for all devices that deal with fluids and light to measure or detect biological markers.

freexky - 2019-09-25

https://www.youtube.com/watch?v=puVxGnl_3y8 this is great

Halojen - 2019-10-16

@freexky I just rewatched this thunderfoot video because I just watched that one ^^

The Egocast - 2017-01-30

Filming that in front of a sunset was brilliant. Great video.

jony johan - 2019-05-30

2017 ; no

2018 ; wait

2019; Youtube .. okay. Let recommend it now!

Mark Grant - 2019-06-01

jony johan yea, me too. Why did I have to wait 2 years to find this gem.

Eric Eric - 2019-06-02

Also 2019: Dude repeating a stupid meme like he came up with it and nobody else ever heard it before.

jony johan - 2019-06-02

@Eric Eric 2019 : Dude Spoil Dude repeating a stupid meme like he came up with it and nobody else ever heard it before.

Kinsei - 2017-01-30

I wonder if you played some sounds next to the vial you would see some repeating pattern of cavitation bubbles

Colin Smith - 2017-01-30

+Yorizuka *whomst'd

Atlas WalkedAway - 2017-02-24

Great idea.

Acoustic Vibe - 2017-03-21

cymatics

BibiBosh - 2017-03-24

You shud only use water that was made using clean Hydrogen and clean Oxygen!

Timothy Egoroff - 2017-11-23

Kinsei yeah, and apply various freqquencies of ultrasound through it as well.

Steve Sloan - 2019-05-29

One of the most awesome things I’ve ever seen! You should sell those contraptions... I’d buy one just for the hammer effect sound alone!

Kohmelo - 2017-02-08

I'd love to do these scientific things for living, but I am an idiot

Reno Simpson - 2019-05-16

All geniuses were idiots prior to their discovery, some were still idiots even after. Invention comes to fruition by necessity or mistake, sometimes it takes many mistakes.

Anish Saud - 2019-05-21

@Reno Simpson We idiots are only limited by the weights of our wallets

Adrian Addie De Jesus - 2019-05-24

Idiot you may be but you're wise in knowing that.

Sam Hauck - 2019-05-27

You're only limited by the extent of your mind ;)

Socks With Sandals - 2019-05-28

With that level of honesty you'll never be a journalist either.

245konrax1 - 2017-08-25

song name :
Ticker - Silent Partner

Timothy Branco - 2019-05-28

Actual water hammer effect recorded. Water mass against glass without the cushion effect of air. Great experiment!

Charles Campbell - 2017-01-29

This is exactly the kind of person who needs a high speed camera

NotLife River - 2017-01-31

Video " OP;ED - Loving/Hating Your Enemy " <---------------- description of many ( #NOTALL ) new Thunderf00t fans and Thunderf00t himself.
Calling people alt-right etc.... Way to go.
Thunderf00t and his NEW FANS ( #NOTALL ) are far leftists.

Silas Mayes - 2017-02-02

Mattsoup YES!!!!!

Bud Bud - 2017-02-23

I hope Thunderfoot never uses the camera to "send nudes"!

Njupi Fialous - 2017-03-21

https://s4.postimg.org/nh6sbsfb1/T_FOOT.jpg

LMcAwesome - 2017-04-05

I see we have some more little bitches here calling anyone they dont like "far leftists". The question is: how did you get out of your safe space to post here, snowflakes?

Warpstoned - 2017-01-30

Does this have something to do with that popping sound you get when you crack your knuckles?

Michael - 2019-04-05

The sound you hear when "cracking your knuckles" is actually the gas bubbles that form in the fluid between your joints... when compressed, the fluid produces small gas bubbles that will pop, resulting in the cracking sound you hear. It's also the reason why you usually have to wait a while before being able to pop the same joint again (i.e. knuckles), the gas has to build back up.
https://m.youtube.com/watch?v=n3IYmdy6d4Y

Hans Van Ingelgom - 2017-03-22

4:40 Amazing how that clicking sound, when played very slowly, turns into this chill ambient music...

Sean Ramey - 2017-03-26

So the sounds are caused by the sudden collapse of the vacuum bubbles in the tube?

Rick Jones - 2019-02-28

Sean Ramey. Yes

milan ilic - 2019-05-27

It is called hydraulic shock, and we in the plants have a lot of problems with them. When liquid on its boiling point is moving it makes these things. Great video!

What'a'nerd - 2017-03-21

I "believe" this is a good analogy for how universes exist in the vast emptiness and why they seem so empty themselves. 4:00
This could be a measuring stick for how long out universe has left if this is a case of "micro-mimic-macro" as is often observed in nature..

giggythore - 2017-06-07

That would actually be a cool way to think about it if the Big Crunch was going to happen, but as far as my knowledge goes our universe is accelerating without many signs of stopping. I think it was heat death being the biggest candidate for where we are going at the moment? Either way, very cool analogy indeed.

jimphubar - 2018-07-11

I wonder if from the perspective of deep inside the vapour bubble during the right slice of time that bubble may measure as expanding at an ever accelerating rate until the unobservable outside 'pressure' or, probably more likely, the draw of a low pressure nucleation point elsewhere halts that expansion.

Kinzie Burton - 2019-01-18

What'a'nerd hmmm thought provoking

Dr. M. H. - 2019-04-23

"as above, so below" the Gnostics understood the universe is fractal. Also EM is scalable so things at the micro level and macro level (e.g., distribution of neurons in a brain and plasma (matter) in nebulae)...the reason for as above so below. Check out the SAFIRE & the Thunderbolts channels for more info & some excellent science (for a change lol)

Zoltán Kürti - 2019-05-28

@Dr. M. H. thunderbolts is nonsense. They can't even grasp special relativity, altough it's really not that complicated. They say it's wrong. Well, with that they say reality is wrong, because experiments agree with special relativity. Keep living in your dreamworld, but don't wander too far. Reality will kick your ass back on track!

Fry - 2017-01-29

You really start to understand and appreciate the value of a 20k fps camera when you see things like this

Pencilbender - 2017-03-21

no pricetag? the experience of it? or the equipment...

ExtantFrodo2 - 2017-03-22

Just like audio sampling and playback over 44K cps is undetectable to the human ear, so the same can be said of video sampling and playback above a certain rate. The photoreceptors in your retina can only reset so fast to enact/trigger another neural impulse. The neural impulses on the optic nerve only travel so fast. I'd say other than slowing down rapid events you wouldn't need 20kHz cameras. Am I wrong?

Greg Salus - 2017-03-28

+Laharl Krichevskoy What the fuck is pron?

sniperfreek - 2017-04-09

+Greg Salus I'll give you a hint -> Try switching the R and O out for each other ;)

Reno Simpson - 2019-05-16

I can't even count that many frames in a week!

AlligatorBytes - 2017-05-21

3:20 according to the captions, you have created music

A. Akin Koksal - 2019-05-31

First thing came to my mind to describe this was "Beautiful..."

Mārtiņš Kaktīts - 2017-01-30

I looked at the first slow mo footage and thought: "is thats all you get for 15k?" .. and then I saw the real high speed - holy shit.

David S. - 2017-01-30

These are the videos I subscribed for. Love the intro, by the way.

Liquid Potato - 2017-03-14

7:19 this looks amazing

F.D. English - 2019-06-01

I could have watched 40 mins of this! Wow this was cool. But did I miss the part about what makes the noise?

LogicPunch - 2017-01-31

I love that intro+when he gets to use his expensive equipment

LogicPunch - 2017-01-31

I love that intro+when he gets to use his expensive equipment

TheBackyardScientist - 2017-01-30

What an interesting video, I learned something new today. Thanks Thunderf00t, that was cool!

Rem - 2017-01-30

Love your channel BYS. :)

dousu ketoby - 2017-02-02

TheBackyardScientist you should spread the word by like doing it on your channel

Guru Amirite - 2017-05-08

TheBackyardScientist
I didn't get it... what caused the clanking?

Dylan Finch - 2018-07-07

John I bet it was the sound of the water falling after if formed the small cavities, it can fall in an instant in a vacuum, whereas in a pressurized environment, it has to fall past the gases.

Zendry Maulana - 2017-03-27

6:16 i've seen that shape before

psylence101 - 2019-05-28

I had it paused at exactly 5:04 for a few hours and when I brought up the tab I was like wtf have I been looking at?

Heads Mess - 2019-05-29

nothing! lots of nothing! but something is happening in that there nothing!

Radical Edwards - 2017-02-15

its called cavitation, I used to get this when the fuel system tries to draw more fuel than the pipe can supply. I used clear tube and watch it

yssing - 2017-01-30

So would this heat up the water?
Wouldn't the cavitation bubble release energy as it collapses?

nick4819 - 2019-05-30

Yes but it would take way more energy swinging it back and forth. Might as well just heat it via other means.

Michel Engelen - 2019-05-28

pressure effects in fluids causing liquid to transform to gas state, equal to having oversized pumps causing cavitation.

Beautiful demonstration, cool project !

Jackson McKagan - 2017-02-09

what was that song? i hear it everywhere

Swapnil Sonawane - 2019-02-10

Ticker by silent partner. Copyright free YouTube music.

Gordon Freeman - 2017-01-30

Dude, seeing those bubbles was the most amazing thing I've seen in the past months.

Nonnof Yobiznes - 2017-03-23

This is the coolest thing I've seen on youtube in a long time... and boy do I spend time watching a lot of stuff..

Call me crazy, but I'd say the vacuum bubbles seem to be teleporting...

Rex Galilae - 2017-01-31

4:22
Trypophobia alert!

Realmouse - 2017-05-13

this is without a doubt, THE most amazing thing i have ever seen. thank you for this.

Weedus - 2017-01-31

I noticed that sound when i clean my Bong and wondered where it comes from lol

mrmacwa - 2019-05-27

Is there a way to measure the energy released?

nick4819 - 2019-05-30

Why..?

Bob Fred - 2017-01-29

Production quality's really ramped up in this video. Nice job!

frvo - 2017-01-29

Bob Fred yeah! I agree!

Automated Miner - 2017-01-29

Production value also went up by about £15000

TheHmm43 - 2017-01-31

It's like he's taking the channel's funding and actually directly investing it all back into making greater content. .. It shows! ..and it doesn't surprise me one bit.

Dragon Cola - 2017-02-07

Do you ever think you'd be able to upload the raw footage of the slow motion or would it take weeks/months to upload?

Jay Free Bertetto - 2017-01-31

Wow, that is amazing looking. It looks like it just appears from nowhere!

Dardar - 2019-05-30

This might sound remedial, but this is just for me from my observation. So...correct me if I'm wrong. In a vacuum, there is no change to mass and inertia?

Michael - 2017-01-30

i always scream "PHIL PHIL PHIL PHIL" when watching thesr videos cuz hes the coolest science guy

Flávio Vink - 2017-01-29

thunderfoot exposed
he's actually a wizard

Sumitro Bhaumik - 2017-03-23

busted*

Robert De Groot - 2017-01-31

7:20 is amazing

jason raaymaker - 2019-05-27

top 10 video iv watched on youtube maybe top 5

Casual Starlord - 2017-01-30

hah this is awesome, almost as awesome as that intro!

MANU P.A. - 2017-05-28

This is insane... Second time I have had my mind blown today, time for a nap...

Javier Harth - 2019-05-30

Amazing!
Actual implosions into nothingness, so beautifully created by the energy shaking the vessel. Brilliant!!
Schauberger was right. Water transforms as it acquires power. Similar to cavitation, but with a whip effect as the water changes direction abruptly, as it becomes turbulent. I've seen ocean waves reflected into each other from the beach make the loudest noise with out the wave braking.

corthew - 2019-05-26

Bubbles of nothing.
Now THAT'S something!

youtuubbguy66 - 2017-03-22

7:12 Simply amazing!! The bubbles almost seem to be teleporting. How does it look at the fastest speed the camera was able to pick? Can you actually see the bubbles moving to their location really quickly or is it faster still than the camera can get? Great video :)