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The big speaker which had the tube in it actually has a helmholtz resonator, the tube. It is used to boost The low frequencies. It is also called a bass reflex port.

*in the car “Aaa my ears!!” “Don’t worry you’re just in a Helmholtz resonator”

“It’s easy to wiggle things with sound”. - Action Lab 2021

You could see him die inside faking interest in Raid Shadow Legends.

Next, teach KZfaq to power their notifications by sound

I'm learning more from this than I've learned from online schooling the last few months

The only thing keeping my brain alive while my teachers struggle to use zoom.

I was taught that the air in the neck of a Helmholtz resonator acted like a mass and the air in the body acted like a spring - essentially just a mass-spring system. The smoke demo reminded me that reality is much more complicated. Very cool idea.

I caught myself asking a dumb question. As I was watching the video, I thought to myself:"I wonder if this could be applied to space travel?" No doubt some of you will see the problem much quicker than my 64 year old brain did. "D'uh, sound doesn't work in a vacuum!" I claim no liability for any injuries sustained during face-palming. Thanks, Action Lab, for educating this old dog.

Haven't seen a Raid Shadow Legends ad in so long lol

"powered by sound" That one girl in class when the power goes out: UNLIMITED POWER!

Your channel is better than most public school science teachers. You shouldn't have to plug Raid Shaddow Legends

Raid Shadow Legends... Me: SKIP SKIP SKIP!

I love your videos, you answer amazing questions that I’ve never thought of.

I'll be honest I learnt more science by watching channels like these than school textbooks

Action lab man, you are amazing.

As a musician this is really really cool! I notice a similar thing happening with certain frequencies with the snare wires in a snare drum. If you hit a certain frequency they’ll start to resonate really fast!

Omg thank you for explaining the car window down noise!! I always wondered why that happened and now I know it’s this helmholtz resonance!! 😱

I learned more about waves on a ten minute KZfaq video than the whole high school. Edit: There are a lot of Einsteins and trolls under the replies. You have been warned.

Great job!!!! ANOTHER wonderful video! Love the scientific principles in our everyday objects that I had no idea about. Thank you so much, keep it up!

I love learning new things I didn’t know about, he really does make it easy to understand, like a lot, keep up the videos!! I love em all!!

This was a VERY cool and interesting video, brother. Thank you for continually making great content like this. :)

That is a cool demonstration of resonance ! loved it ! thanks.. I love your channel.

This is really cool! Reminds me a little of the rice on the speaker that creates different shapes based on the frequency.

This video is a perfect segway to the backpressure argument in vehicle exhaust systems (and this is also my attempt at a free engineering analysis for the best exhaust setup for my Mustang).

Thank you for teaching us science in such a didactic way

"I have a wave machine." _Pulls out a model inline 24 cylinder engine._

Hi I love your videos they teach me a lot and thank you for teaching me things in a cool and fun way

You never cease to amaze and enthral. Your videos make my mind happy. Well done.

Very nice video - a subtle effect, I have learned something new.

Hey man, that was really cool. When I saw your wave machine I was like, who has that?! and then when I saw the left half, with the other types of wave, I was like WOAH! I want one!

You really do amazing things with everyday materials man! cheers!

I wish u were my science teacher back when I was in high school, ur videos are so incredibly interesting

This was great, i never knew that, so glad i watched this. An interesting video and really clear explained!

This one Literally taught me so much, thank you man!

Love your Videos, keep up the great work!

Just BRILLIANT ! brilliant explanation really. No one does it so well on the web . Very intersting even becasue of the analogy such a topics can propel.WELL DONE thank you.,

Love your channel man. Keep up the good work.

great work.. nice research on sound keep up the good work💞👍

Thanks, man. Now I can move objects with my sound.

@6:38 I think it is in part because of the vortex explanation, but I also think it would work without vortex shedding on the outgoing air too. The reason is because the air exiting the bottle is relatively directed straight out but the incoming air is drawn from air in all directions near the opening, creating less directional momentum.

you are just amazing thanks for increasing our knowledge brother

Action Lab : Moving object using sound Me : that's 'sounds' easy 😁😁😁👍👍👍

This channel continues to impress me! I liked everything discussed in today's video... Wow! I've seen the wave simulator before, but never saw the longitudinal portion of the demo... it reminded me of FM (Frequency Modulation) propagation (vs AM that is transverse). Now for a jumble of questions and ideas... bear with me please... what occured to me is that it might be possible to shape the sound to make things move?? I Googled and found out that there such things as standing longitudinal wave with sound... Can those waves be swept to create motion? On a similar note... I've seen a demos of interference sound waves by using a second sound wave to create NULLs then sweeping one frequency would move the nodes thus any object that was positioned in the null would follow it and thus move. And one more thing: I've seen a really cool demo (I think using 3 ultrasonic transducers) to levitate and move small objects in 3D space.

@The Action Lab the fluid dynamics community would point out that this is a reaction motor, similar to a pulsing jellyfish creating propulsion by flinging out vortex-rings. Vortices slowly carry momentum along as they move. (A mass-bearing fluid jet is the same as a close-spaced stack of moving vortex-rings. But launching even one vortex-ring will give an opposite "kick" to the launching device.) If your fluid viscosity is low, then, during sound-oscillations at a circular aperture, the "sucking" part of the AC cycle will produce no vortex-shedding and zero propulsion, but the "blowing" will assemble and launch a single ring-vortex, which carries momentum with it as it flies away. So, rather than a von Karman vortex-street, it's "smoke-ring machine-gun." (But multiple vortices are not required. A single ring-vortex is a mass-carrying object, and the bottle receives a "kick" from launching each single ring-vortex.) Maybe with an ENTIRELY smoke-filled bottle, aimed upwards, a high-speed camera might see ring-vortices in the smoke stream, just before clear air gets injected into the bottle and messes up the uniform smoke. (Probably there are ring-vortices being launched inwards as well. But these crash into the bottle's inner surface, delivering their momentum back into the bottle, so they produce zero net thrust.) It's just a jet engine, but where the intake and outlet are the same. It must rely on "Feynman's Inverse Lawn-sprinkler" effect, where sucking does not shed any vortices, and cannot cause propulsion, but blowing causes large propulsion. Hence, oscillating AC fluid-motion will still generate a narrow "exhaust plume" and create a reaction-motor for Feynman's sprinkler (but only in situations with high fluid inertia and low viscosity.) Vortex-rings have an outer surface! They're roughly spherical. All the air within the surface is moving along as the entire vortex moves ...as if the vortex was a moving baseball made of gas. It's a real "object," just like a fluid jet, and if it strikes a surface, it delivers a punch. (And when you first create such a gas-baseball, your vortex-launcher receives a "reaction kick.") Here's something I've yet to try. Build a loudspeaker-based smoke-ring box. Put it in an aquarium full of smoke. Now launch smoke-rings upwards slowly. Ideally they should be spherical, like "Hills Vortex." WIthout turbulent mixing with the air outside the spherical boundary, the ring-shaped flow in the core may be totally invisible. Will they remain as "air balls," and not slowly change back into smoke rings? edit: hey, RIMSTAR has a 2014 video, and his shows a textbook illustration: yes, the stream is actually individual smoke-rings, NOT a von Karman vortex-street. His yt video is: L5fVFA2sWt4

That is cool. Great explanation and demonstration.

Omg i was studying about sound energy in physics just an hour ago and he made a video on it

Nice video, great job showing how it works.

At this point it's a rite of passage to have the Raid sponsorship. Well done! Great experiment as well!

you have a lot of interesting videos, but i think this is my favorite yet.

Great expriments ,Love your videos . Please make more of such interesting videos for us Science nerds.

8:19 Sounds like the first note of “Welcome to Los Santos” 😂😂 I could’ve sworn it was gonna start playing

I use to get bored in the class when I studied but now I'm here watching your KZfaq videos after years I graduated 😂

*_'I used a champagne bottle and the bottle sounds like a weird instrument!!'_*

I wonder why you don’t have 10 million subscribers already. Your videos are awesome. Every single one of them

A critical key to think about is the squareness of volume... an over square vortex tends to become trapped between two pressure gradients and un-coils itself, where as a under square vortex is able to free itself through the process of coiling inwardly . Expansion chambers like what was used on early 2-cycle dirt bikes moved the exhaust gases out the end of the expansion chamber in that a vacuum could be created on top of the piston & at a time when the piston was at bottom dead center and again, produced a pressure when the piston started it's way upwardly. Engery that is transmitted by sound is greater when a gas is under pressure than what it is under a vacuum.

Thanks, this was really interesting!

When I worked in Hospital, we used a resonator to calibrate the output power of therapeutic ultrasound devices. The resonator is immersed in water, the transducer in water a set distance away. The pointy end of the resonator (sealed!) was facing toward the transducer. As we increased the power, the resonator would be pushed back...the amount of deflection a direct measure of 'acoustic pressure'. Oh, the water had to be pure and a certain temperature, but the results of the test were considered reliable.

Excellent demonstration.

First subbed u when you had 200k I took a screenshot Cuz i saw this channel is going to be big 3.1 million👍👍👍👍

the anount of knowledge this man possess is phenomenal.

That sponsor transition killed me lmao

More Sound Experiments please!!

Very interesting! Would have been interesting to see the smoke at different frequencies.

For getting the frequency - it looked like the app you used is using constant bandwidth slots for the analysis and the frequency you got is rather inaccuarete. Lowering the cutoff and increasing the bins can help with the accuracy there. Talking from experience here as me and my friend tried dual-tone multi-frequency encoding (DTMF - the way old phones used to dial automatically) and with the first attempts we noticed that the shown frequencies for the low-tones were off by up to 5%. For resonance-phenomena that is a big difference.

Awesome vid literally my role model

You picked the best choice speakers 👏

My teacher is teaching exactly this topic at college got chance to see practically as well❤️

When action lab posts my day is made

Wow, this is fascinating and cool! 😀👍🏻

I did not know that. Very interesting!

If you could reduce the size of the bottle, while simultaneously matching the resonance frequency as the bottle reduced in size/shape, would you achieve an increase of acceleration? Would going up in amplitude and freq. to the next resonance in MHz, GHz also produce acceleration?

Question : what material&frequency would optimize this for trust ?

did I ever tell you....I love your channel and thank you!!!!

That car part was cool, I always wondered about that

Awsome video! muchas gracias

This is absolutely wild man 😯

Where do you get your content ideas!?!? Nice vid

I really like your videos, thank you

Awesome! Id have liked to seen a one liter bottle or perhaps a bottle with a smaller neck for higher thrust maybe.

My total guess is that there's an air impedance mismatch between incoming and outgoing air, as well as a direction difference. It's picking up air from around it (omnidirectionally) at lower velocity, while thrusting it (unidirectionally) at a higher velocity with a narrower stream. So there will be no net difference in incoming vs outgoing air, just a difference in impedance and direction. Vortices are amazing!

You explain a lot better than my teachers😊😁

Hi, what would happen, if you would use octave frequencies of 112Hz like 224Hz, 448Hz, ...? Would it go faster, stay the same or don't move at all? Thanks

This is mind blowing. I love his content

Would have been good to see how the smoke moved when you played a different frequency of sound for comparison.

Im 30 years old and until now never understood how to imagine sound waves. Thank you!!!

1) remind me of the use of sound in meditation...that ooom sound.. 2) This is a nice way to look at tesla valve aplication ( creating inner votercies to direct flow) I would love to see a tesla valve in superfluid to see if there's such things as vortecies in Superfluid.

This man has so many props. Science teachers should pay you to come teach a class for a day.

That's pretty cool there, McFly.

I didn't really understand the vortex part, but it is pretty cool that it works.

For the 5000th time, great video! I want to do so many of the things you've done! Your friends must have a hell of a good time when you say "Hey, check this out, I made a.....!"

If we had a room full of the bottles would we be able to fill the room with the correct hertz/ sound so multiple setups could generate the effect?

This is actually what ducks and other big migratory birds do flying in a V shape. They use the momentum of the little eddies of flowing aur made by the batting of their fellow birds, to conserve energy. So cool!

Wow I loved it good job

Could a check valve of sorts be placed on the opposite end or some other area of the bottle? So that one opening does the vortex shedding, but its work isn't reduced as the replenishing of air is coming into the bottle from another opening.

Would it work if you had a one way valve on the front to let more air in?

Is there a way to find out in which direction with the vertices be formed ?

If I stay with you for 1 year maybe I'll become scientist

Fantastic idea