Is it Possible to Make Hypersonic sound? Ultrasonic Sound Lasers and Lenses
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- เผยแพร่เมื่อ 19 มิ.ย. 2024
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In this video I show how to make a sound lens with a balloon filled with CO2 due to sound refraction. Then I talk about the possibility of creating sound lasers with ultrasonic hypersonic sound that uses modulated ultrasound through air. The air demodulates the ultrasonic signal to produce audible sound only in the area where the ultrasound is projected.
TED talk about Woody Norris inventions: • Woody Norris: Hyperson...
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This channel is filled with fun mixed with science. That's a very smart way to teach others. Thank you
yep. 100% better than normal school lessons. he teaches relatively effortlessly to make it interesting simply due to the fact that he always manages to find interesting things to make a video about. he is definitely creative with his video ideas.
After watching this channel I like science more than ever did. this channel is filled with fun experiment and easy knowledge i like your channel and I am your big fan I am from India 🇮🇳😇
Fax
Some of his explanations are a bit inaccurate/misleading though.
For example, the refractive difference between mediums isn't actually due to density, although they are related. And the same goes for sound through a medium.
Additionally, when he explained how the "sound beam" works, he said it uses pressure waves to propagate, but that's what literally ALL sound is, it's not special to this. And the generator of the waves is absolutely the source of said sound. The source of the waves IS the source of the sound. All waves need a source, and sound is no exception. It doesn't just materialize from the aether.
Next up: sound mirror
*_Wait no that's just an echo_*
Lmfaooo
did you just sansified 🅱️eter?
AKA echo
Wowo nice
Lol
Youre actually better than my science teacher
your teacher is there for money, this guy right here ? he is here for looove :D
Joery Van Damme precies nl 😂🇳🇱
yeah...
well duh
@@Thomasjochen haha yup, allez Belgische :p
Is it possible to make sound with pure silence
The sound of silence
Silence is not that quiet. It already makes sounds. That ya can't hear...
Yes. Just fart in your classroom while teacher is teaching. Everyone will make sound.
@@vijeykrishnaa2230 great song
@@ThePrufessa I love it too
My family friend actually works on contracted entertainment and created a speaker that you can aim that essentially creates a beam of sound to where someone standing next to the target couldn’t hear the sound.
Yess now we can talk at classes when teacher is teaching without getting notice
lmao
Future Generations will say, why didn't they stop him from achieving world domination, when he was still a little TH-cam Channel?!
@@HelloKittyFanMan. In German, you capitalize some letters.
@@HelloKittyFanMan. Talk to me when ur smart. Like wtf, are you dumb? Talk when u know German, I'm surprised of how low your iq is
@@samitannir6830 you litteraly didn't explain anyrhing
@@HelloKittyFanMan. What's your Problem?? It just looks better - better Visibility -and Yes I am German you little Grammar Nazi!
@The Action Lab Would have been cool if you calculated the focal point of the balloon to get maximum sound amplification. As for the hypersonic sound laser, I can imagine creating a device that accurately measures how far apart two people are. One person could be 10 miles across a lake from someone else, and shoot the sound laser at the exact same time as a light laser. The person across the lake sees the laser light immediately, and hears the sound 50 seconds later, which tells him the other person is about 10 miles away. That would be cool!
that's amazing! like thunder and lightning!
I like how you can explain everything in a way anyone can understand, without the need for expensive equipment
I remember the laser sound thing being featured on a show that was on in the early 2000s called future weapons.
I remember too
Man you are the only one that blows my mind ,just while listening and being able to imagine and understand exactly what you want to explain.woaw.respect.
_Sound : am I joke to u_
@Gabriel Prado *am a joke to u*
*Letter a: am I a joke to u?*
@JL_Vasix ?: Am I a joke to you?
Gabriel Prado you forgot “I” but you used i instead...
A: am i a joke to you
These we all know but never think of use them like this thanks alot my friend
IM HYPERSONICALLY SO EXCITED FOR THIS!!!
This is literally one of the most calming channels on youtube
Yes
Oh my Lord, this is amazing. I can understand it fully!!! 👌
I. Am. Impressed. In. Your. Talents.
Imagine concerts in the future with this tech lol, no more pissed of locals, i live near our local showgrounds and when theres a concert on its a pain in the butt to say the least, very cool tech
@RILEY RODRIGUEZ oook
Can you do an expirment where you put a microphone into a vacuum chamber and does it work try talking to it will it produce sound🤔
Like this to make him see the comment
it will but only through vibrations that comes from the part of the mic that is touching the bottom of the chamber.
In the vacuum of space... no one can hear you scream.
I found this experiment really interesting, I think you should consider that in the case of light, the wave length is way smaller that the lenses, so I recommend to repeat it with a weather balloon and maybe add some distance between the sound generator and the sensor. After all, light experiments mostly use planar and coherent laser like waves. You could use dry ice to obtain the CO2 and use a shotgun mic if you have one. The idea is grate, keep the good work.
Thank you Action Lab, *very cool*
Love your vids they have more information then my science book
Amazing video/concepts! Thanks a lot!
I feel like I read about a similar technique several years back where two non-audible sound, "beams," where used to create constructive, and destructive wave interference patterns in the audible range at a specific point.
in the seventies (unfortunately I cannot find the article anymore)
just loved the video!! very simple yet very informative
Your ability to relate seemingly different things in science is very impressive
Is it true that if you collapse an underwater bubble with soundwave, light is produced? If yes, why is it so?
Sonoluminescence.
Not even Wikipedia knows why.
en.wikipedia.org/wiki/Sonoluminescence
Is light produced or is it for nanosecond refractions from bubble collapsing..? How would u measure input of light into/onto bubble..isolating it from environment.. or is it photons being emitted from electrons of atoms of material in the water excited by sound..im not sure if this is possible?? Would salt water be same as fresh water in this case? 😘
Matías thanks for the link..it's very helpful..I'd not heard of this before!!
Your videos are always great
i went on a school tour of washington d.c. many, many years ago and the guide that was assigned to our group in the capitol building demonstrated a very odd sound effect for us. he got a small group of us to stand in an area under the dome and he went to the opposite side of the room and began to whisper and we in the small group could hear him as clearly as if he was whispering in our ears while the rest of the room could not hear him at all. thanks for another very cool vid.
Awesome video as always!!!
This might be the most interesting video I've ever watched by the Action Lab.
Thanks for the video.
Your thumbnails crack me up man, love your channel
This guy never disappoints
Your videos are awesome
As they show some new concepts..
AWESOME VIDEOS
I have watched all your videos..
This is basically Echoes Act 2 in a nutshell
How are you so early?!
Ogey masta, lezz kill da ho, beeeeeeeeetchy,, ,
Are you god? You are omnipresent!!
Bots but this guy is the real one
@Justin Y.
Do you live on the internet?
Nice video brother. I learnt something new from your video. Thanks a lot.
I've watched several videos, and i apologize if you have covered this already, but, it would be cool to show people how the most basic forms of microphones, speakers, and amplifiers work... and how you can use a laser passing through glass, focused on a simple photoresistor, connected to audio equipment, to record sounds with a laser... i think ive heard the cia or fbi building is actually a building within a building to keep spies from hearing inside because of this simple technology... youre the guy to bring these examples to screen! upvote so he sees this, if youre interested!
Wow this one is different 👍
dis boi better be my science teacher one day!
Also, you could take a page from RF and make a phased array with line delays or phase shifters in the frequency range of 20 Hz to 20 KHz.
I worked at a factory that had a sound beam at intersections where forklift Travers would come by and you could not hear the sound unless you walked into the beam notifying you that a forklift was coming. Pretty cool stuff
Great, now I can watch whatever I want behind the desk not fearing other will hear it.
wow, now i know does to produce a co2. good video.
Hey man your videos are awesome love from INDIA
Your the best action lab!!!
The military uses that technology in despersing crowds
Conspiracy fact:
This technology has been used a lot during the 80-90s to induce panick within large crowd gatherings. It was allegedly used to put down a comunist leader...
Best experiment.... Thanks that a very nice experiment.....
Awesome 👌🏻
You can also focus sound with a parabolic dish. In our local science museum they have a display that has two large 6-8 ft parabolic dishes that are about 50-60 ft apart. If both people are standing in the right spot you can hear a whisper at that distance.
Doesn’t horn speaker focuses sound? And could water in a baloon do it since it is much denser than air?
Yes but I think water is so dense that some sound gets caught along the way
A horn speaker confines the radiation angle of sound, but the dimensions of the horn mouth must be large enough relative to the wavelength to exert pattern control and not just create edge diffraction. Think of a straight pipe having the diameter of the sound source: if you use a small source (such as 1"), most audible frequencies will diffract when they reach the end of the tube, because of the sudden change in radiation resistance (forcing the wave to expand in directions not parallel to the horn wall), and the effective radiation angle will be close to 180 or even 360 degrees in any plane crossing the axis. To constrain the radiation angle to smaller angles while having a mouth that opens to be large enough to control the radiation angle, the horn will need to be exceptionally long, even infinitely long.
If you make the sound source tens or hundreds of times larger than the wavelength it is producing, then it will begin to exhibit off-axis self-interference, which becomes more intense as the dimensions of the isophase source (think of a flat piston) are increased, producing coherent summation only in the axis of radiation with minimal spreading, but these sources can become impractically large to transport or mount. (Look at the Meyer Sound SB-3 "sound beam" - it is an array of dome tweeters creating a sound source that is substantially planar, substantially continuous, and substantially isophase.) An array of ultrasonic transducers is able to create narrower beams of sound than a horn can produce, and because even a radiator of practical size becomes large relative to the wavelengths of ultrasound that it is producing, it is able to make use of off-axis self-interference to create a narrow beam at distance.
Because ultrasound is being produced, it cannot be heard. It needs to contain modulation content that occurs at audible frequencies in order to be perceived by the ear. So the ultrasound needs to be demodulated somehow, and it does that by interacting with a high impedance surface, causing the ultrasound energy to be reflected in a non-isophase manner and mostly destroyed, but the residual variation in pressure is demodulated as audible sound. In a Class-D amplifier, this is done electrically by passing the modulated ultrasound signal through a reconstruction low-pass filter, but in the physical domain anything providing a reactive low-pass effect can demodulate the ultrasonic carrier, causing the resultant pressure to contain only audible content below the low-pass corner.
Once the concept of demodulation is understood, a number of methods for achieving audible transmission become apparent. You can employ frequency modulation (resulting in amplitude modulation of another ultrasonic difference tone between a steady ultrasonic carrier tone and a sliding ultrasonic carrier tone as the carrier), amplitude modulation, or pulse-width modulation. You can use mechanically transmitted pressure waves, or you can use other forms of energy to do this also - radio frequency, microwave frequency, or even light, though the power needed to produce air movement can be great enough to cause injury to a subject, so you would need to be careful. This power, modulated at audible frequencies so the demodulated signal consists only of audible content, can be used to produce audible sound.
This phenomenon of energy demodulation is likely what caused American diplomats in Cuba to perceive harsh-sounding audio as they awoke inside their domiciles while their brains were being damaged using a directed energy weapon, causing people in the public to suspect that an "acoustic weapon" was at work; in reality, sound (acoustic pressure waves) would not be able to pass through the walls of their living quarters without being strongly attenuated, but radio frequency energy can pass through walls, and if its modulation contains audible content, then the person or animal subject will experience audio while the rest of the energy is being dissipated in their body in another way (such as frying their brain).
@@Acoustic_Theory *w h a t*
You could make somebody hear voices that nobody else can hear so they think they're crazy.
however wearing a tinfoil hat would do absolutely nothing to stop it
In the Seattle Space Needle, they have one of those devices for you to hear the explanations about the view. I even recorded a video of that when I went there in 2011.
Extremely interesting at
8:00 Wonderful video! 9:07
THANK YOU!
We had these things on the ship i was on in the navy that looked like a thick satelite dish. If you pointed it at someone and pulled the trigger it projected sound directionally at them. This results in a serious ammount of physical pain. It can burst your ear drums if it is held on you long enough at full power. It sounds like a very high pitched reverberating squeal.
Love your vids
Wauw! How does he find again&again such an interesting and nicely new items!?
This thing i never saw, even if i watch i think every sciency channel
Love ur videos bro
Very interesting.
I saw about 10 to 15 people claiming they are first😂😂
@Ian M even quantum effects are more predictable ^^
They are a failure in the Matrix
Could be a Mandela effect.
Wish my physics teacher was this cool and entertaining...
I love your vids you make since cool your the only since youtuber I watch plus you really cool
That speaker *shined!* 😂
My dad is an expert in ultrasound. So cool!
Your channel is the best
4:30: The balloon; sick and tired of TAL’s flicking, becomes sentient.
😂
Air particles are very heavy as compared to light particle it is very interesting to study about the ratio of the angles by which they bend during refraction in different materials and for different wavelengths.
So in the future we may have surround sound systems that can track your ears and direct the sound? others in the same room wont hear it? that would be a cool invention
What if 2 sound were directed through each other. Would they have some kind of interference at the receivers end ?
There has been a police/military device used for crowd control that does this exact same thing. It is called the Long Range Acoustic Device (LRAD).
he posted this on my birthday
Nice soundtrack! “this are not mountains”...
Nice
If you want to make the effect more visible you to give a certain distance between the speaker and the "lense" you can even levitate object with it
Good. Now make flammable water. But it has to remain H²O.
Edit: *Mostly* H²O...
How should this work?
Mix some kind of extremely flamable oil in?
Just mix ethanol with water boom flammable 'water' which is mostly water
@@deadalpeca8099 it would be over 40% ethanol
I dont think almost 50/50 is considered as mostly water
Just to be clear, your notation should be using a subscript for the 2, otherwise it's an ion.
Mr.Knight The Detective: en.wikipedia.org/wiki/Chlorine_trifluoride
That is fucking insane i just thought about it this morning and i go to youtube and find my answer ! Perfect as always ^^
I wish this guy was my science teacher in school
So interesting
There was a set of whisper dishes at the science museum. You whisper into the satellite dish and the person right next to the other dish was the only one who could hear it. That was like 30 years ago. Around that time our high school science teacher had a laser that would send sound and light. The sound was heard only when the light hit something.
Best experiment
Please make one Hypersonic sound aimer, with tutorial and parts list.
sir, would you be so kind to create CO2 in vaccume chamber and would it change atmsphric pressure inside the vaccume chamber
This reminded me of me in robotics class: “Supersonic sensor”
I've been wondering about this tech for a long time. I wonder if it would be possible to ionize the specific low or high pressure air pockets, and keep them in the same physical location? Could this be how we make force fields? Plasma held in place, and powered, by a focused sound beam!
I wonder if ultrasonic sound waves could be used to steer light. Maybe ultra short laser pulses synced with them could be refracted multiple times? Could make for a strange effect with the appearance of light changing direction in mid air :)
Well is it same as connecting two plastic cups with string(thread) using one cup as transmitter and another receiver?
Because it travel through air(rarer medium) in cup first and then string(denser) via cups
His videos before: Interesting experiment to show how darkness works
His videos now: *Sound laser*
There are actually cinemas using this already....
It was demonstrated here in Denmark more than 10 years ago..
This is not new technology. The military has been using sound cannons for a while. Some commercial shipping companies also use sound cannons to run off shipping pirates.
Yes I saw some TV program around a decade ago about the military using this technology as a non-lethal deterrent and for crowd control.
Can you do the Quantum Venn Diagram in a vacuum chamber? Interested to see if there's any difference.
do the lenses curve the light or angle it differently upon refraction? Isn't a curve just an infinite amount of straight angle changes so i guess the light could curve. I'm still a little confused on that. Great video!
What about a parabolic dish? Out the front of the visitor centre for the Parkes, NSW, Australia Radio Telescope they have two parabolic dishes facing each other about 50m apart. When you and another person stand right in front of each dish and talk (at normal volume) it sounds like the other person is right next to you, but they are 50m away. If you do a loud clap the echo is really loud and you can hear the echo repeating until it fades away.
Now with your video on light sabers, I always thought that the sound of the saber was due to the fact that the light saber beam was actually focused sound. Like ultrasonic welding which uses ultra sonic mechanical vibrations to disrupt the molecules to bond items at a molecular level. Would not a beam of focused ultra sonic sound, I mean like really high obviously, be able to separate molecules of any material to the point of causing a cut so to say in the material. Hence the sound that comes from the light saber beam. The laser beam, blade color would contain the focused sound so the wielder would know where the blade ends. Just a question I have had for some time now.
Please do a video on how sound is carried better at night...
Can you try it in vacuum chamber,, create a long slender hollow cone ,put a sound source at bigger mouth and seal it, place sounds meters at regular intervals up to the smaller end,,
Sound Camera FTW
(lens ... or parabolic dish "mirror")
You can also reflect waves to focus them
Have you seen the videos on the Active Denial System developed by the US military? It's similar to this but uses microwaves focused to essentially overstimulate the outer layer of a person's skin just enough to feel overwhelming pain but not deep enough to burn them. Looks like scary and amazing technology similar to what you're talking about in this video.
The TH-cam channel Codeparade did a video with hypersonic sound generators i think
Big fan! If water is pumped through a circular pipe at a high velocity, would this mimic a gyroscope?
Now that u mention that sound and light is a wave, so can we change light/color into a sound? Maybe we can make d a music from color then.
And what makes that 2 waves is different actually?