What Happens When You Put A Speaker In A Huge Vacuum Chamber? Can You Hear It?
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- Опубліковано 11 вер 2024
- Can you hear sound in space? In this video I put a speaker in my vacuum chamber along with a diaphragm with vibrating salt to see what happens when I suck all the air out of the vacuum chamber. The pressure waves vibrate the salt when there is air in the chamber, but once it is mostly gone the diaphragm stops vibrating even though the speaker is still playing! I play a sine wave at 800 Hz to get the salt vibrating. At full vacuum I didn't see any salt vibrating at all. This is a good example of why you can't hear anything in space.
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There are some people commenting that you would hear an explosion in space because the gas from the explosion would create the medium in which you could hear the sound. I did a quick calculation to check if that would be the case. So lets assume that we have a 100 L canister under 10,000 bars of pressure that explodes in space and we are 10 meters away. The gas will expand adiabatically (no transfer of heat) such that when it hits us, the pressure will only be 0.003 bars! That is still a much better vacuum than I had in this experiment. But based on the experiments of Cody's Lab we see that the initial pressure wave can have enough kinetic energy to at least move a paper, which means it could move your eardrum. So depending on your definition of sound then you could say that an explosion hits you with its own gas which will make a sound to you!
For this calculation: Assume gas is diatomic so gamma=7/5. Assume gas is ideal. So PV^gamma=constant. So the constant we can find from P_initial*V_initial^(7/5)=10000*100^(7/5)=6*10^6. Then after the gas hits us at 10 meters away it has expanded to a volume of 4.2*10^6 Liters. Using the same relation: PV^gamma=6*10^6 then we get that the pressure =0.003 bars!
Hydraulic Press Action can someone translate this for me
Hydraulic Press Action r u a wizard
lol
Hydraulic Press Action do a light bulb that's on in the vacuum 💡
Hydraulic Press Action I dare you to like and pin this comment.
Bet you won't
"There's this quiet sound, maybe you can hear it."
- No, I can't hear it over the music and your voice.
If you want us to hear a very quiet sound, then remove all the other sources of sound for at least a few seconds.
"Listen, there's a noise but I'm going to keep talking so you can't listen to it while telling you to listen to it"
Tennouseijin, your right. for some rrason that made me really mad....
That shit made me mad when he did that 😂
Tennouseijin EXACTLY
Don't you just love it when people are stupid enough to continue talking, despite saying they hear something quiet?
"if you listen closely you could hear a slight hum..."
-talks over the whole thing-
-And puts Background music in the vid.-
It doesn't matter. No vibrating means no sound waves, which means your ear drums won't vibrate, which in turn, means you can't hear sound.
Ihavenoidea actually, this is not true, because outer space is not truly empty. If we understand that space has an ether, (all particles have a real time electrical connection which is proved by quantum entanglement) then we understand that sound will travel through the ether the same as light and electricity in space, so there is sound in space.
You might hear something, but that's because the way a sound box works is (electrically) vibrating a piece of magnet to create the sound waves. Without air the sound waves doesnt exist, but the vibration does, and because the sound box is attached to the chamber wall, the whole thing is vibrating making a hum.
It's like when you hold a phone playing music, you can slightly feel it vibrating.
@@Smartguy561 Can you hear the sun?
Him: "Sounds can't travel in space so you can't communicate"
Sign language: *Laughs in superiority*
Who tf said that we can’t communicate in space ? Mfs don’t know about paper, screen, drawing, sign language, …
Does the Bluetooth speaker work in a hydraulic press?
Yes, if you don't turn the press on. LOL
That didn't deserve a full caps "LOL"
Abbreviations are to be capitalized.
Still wasn't funny
Mike Franco yes it is wifi which uses radio waves im pretty sure and radiowaves can travel through vacuum
Well its hard to hear anything when you never stop talking and have stupid music playing all the time.
Tru
J.Anderson The2nd True is what you would use sir.
JeonGyeon Makes Pink Lemonade Tru tho
lel
totally agree
if you want me to hear it... stop the music and stop talking for a sec!
Lasse Discovers that's what the sand is for
So when I did this experiment I found that the speaker simply did not work in the vacuum due to internal pressure behind the diaphragm keeping it from vibrating. How did you solve that issue?
+Cody'sLab the only check I did for that was to have the speaker on the floor of the vacuum and you could still hear a strong sound due to the vibration of the speaker against the acrylic, but when it was in the air you couldn't hear it. So I assumed the cone was still vibrating under vacuum.
or play the speaker upside down and stick a small thread with tiny weight to the diaphragm(like a pendulum) so that even in vacuum,you would know that speaker is working as the weight will bounce with diaphragm.
The cone would as you don't need air pressure to move, the speaker is just a electronic magnet with a diaphragm to push the air which is "sound"
Just a better vacuum, Cody
Cody'sLab
the salt definitely gives a decent visual to the sound not being able to travel through a vacuum. great video.
Clearly none of you payed attention in science class. There are no air particles too carry the sound waves...
Clearly you didn't pay attention in English class. **TO**
Clorox Blęach bite me
Evan Catani XD owned
Evan Catani kelp for brains
A Christian Follower no its a peanut thank you very much
Its kinda hard to hear the music humming in the background over your voice and the music you put in.
Just saying.
Whelp, at least someone asks nicely.
You shouldn't have a background track if the purpose of this video is to find out if you can hear a speaker in a vacuum.
Purpose s
This was awesome! I've already learned a lot from Cody's Lab with sound in a vacuum but I still learned a lot from this video. Thanks 👍🏻
Think what would happen if you pumped out the air then filled with argon or helium.
“I can hear it!”
*Pauses video*
“Nope, just tinnitus”
3:03 all I can here is that annoying music in the background
Really love how quick and straight to the point ur vids are. I really am disliking all the clickbait ppl do lately. I am always getting what I ask for wen I click ur videos
i told you this would be the new challenge! 😅😂
I got recommended this 3 years later
When I was in HS we had a little vacuum chamber & we put a fire alarm bell, an old style one that has an actual bell & a hammer, in the vacuum chamber. We tried suspending it with several different materials & could never get it totally silent but it was still really neat seeing the hammer going like mad against the bell & just barely hearing it. It went from uncomfortably loud to straining to hear it. If I recall correctly, we got the best results by suspending the bell with rubber bands. We may have not had a 100% vacuum or some sound was still traveling up the rubber bands. Whatever the reason, even with a little continued sound, I thought it was neat enough to mention it in a UA-cam comment 30 years later.
If I was fortunate enough to have a vacuum chamber, I'm curious if the noise generated by the speaker became more quite, higher pitched, or both.
+Logan Pachulski it just gets quieter, pitch stays the same. This is because the amount of air just affects the amplitude (volume) the cycles per second of the cone in the speaker vibrating is what determines the pitch. That wasn't affected by the vacuum.
Hydraulic Press Action remove the music of the video on that section so we can get a better idea
Well the vibration of the speaker is determined by an electrical current sent to its coil, so it would stay the same.
It's not like some reed instrument loaded into a tube whose frequency is determined by 4 x the length of the pipe/speed of sound in that air pressure. You'd expect a reed instrument to go lower pitched but quieter, because the speed of sound reduces in less air pressure.
It is not like helium where the density is lower even at a high pressure which causes the air to have a high "spring constant to weight ratio" meaning sound waves are passed on quickly as vibration down a stiff lightweight spring as composed to a loose slinky.
In my opinion, by using a suitable loudspeaker we can pass sound in an almost perfect vacuum. The maximum volume in the atmosphere is 196 decibels, so as when the sound is increased by 20 decibels the acoustic pressure is multiplied by 10 it is possible to reach 120 decibels under a vacuum of 0.0001 bar.
i hate all these fucking Ring 2 trailers, i had my headphones on with my volume blasted and i almost just died
Too bad you hadn't had a vacuum chamber ready so you could put your headphones in there so you didn't hear anything :D
Question: The vibrational waves gradually stop traveling through as the vacuum is created, so if the waves were stronger to begin with, they would keep the salt moving for a longer period of time. My question is if the vibrational waves are really strong, will they still be incapable of traveling through? even a little bit? Like... can sheer power of a strong enough explosion destroy a vacuum for a few moments?
An explosion in space would still be heard because an explosion is a rapid expansion of gas. The gas would collide with your suit/ship and relay the sound. It likely would not sound like an explosion though. Cody's lab did a 2 part series on it.
+Ethan Winder good point, although I guess I was assuming you were far enough away that by the time it got to you it would have very little sound/pressure . I wouldn't want to be close enough to hear it!
Very fair I suppose. If you where close enough to hear it with any volume then the pressure wave would at least knock the ship. At the time I was thinking the gas wouldn't lose momentum due to being in a vacuum/space. I never thought about how the further from the explosion you are the more spread out the particles are due to it forming a spherical shape
Check out the comment I pinned above and I show you that you could call it a sound that you hear even though it would really just be gas hitting you.
Depending on the amount and the speed of the stuff hitting you, you could hear something. But it's not the sound of the explosion. It's just the material hitting your suit/ship and producing sound in it.
Sound is elastic medium oscillation. Gas particles flying in all directions are not sound. It's very straightforward.
I believe that's what sound is, gas hitting you, of course being in a medium means your surrounded by it constantly bu a greater pressure of it would be the same analogy.
You should use one of those magnetic levitating speakers in the vacuum chamber so it's not touching the container and you can really test how sound works in a vacuum.
hi
+Pug Ninja hi
Hydraulic Press Action Ur channel is cool
Man I love these experiments. Imagine the cosmonauts doing some repairs on the international space station. They wont hear the stuff clanky around unless they were using their suit as a sound transmitter. Coooool
would liquid in a water balloon boil in the vacuum, or would the balloon itself keep it from boiling?
It would boil. The balloon would only slow the process down.
The balloon would expand until it burst.
Thank you ,cool. This also proves radio waves can travel in the vacuum and don't need a medium in which to travel. Appreciate the time spent doing this, cheers.
Uh, how does it prove that? It proved the opposite. The salt didn’t move.
how are we supposed to listen to the sound when you won't stop talking and playing music in the background? like seriously, use your brain.
Aqua listening closely works
Do not be rude. Be polite.
";-)
+Tony -- You didn't say "Please"
That's a good way to learn that sound needs air to be heard or travel, one question that came to mind is, would you be able to put a wireless Mic in the chamber? That would give a first row view or test of the sound dying out
Put 2 kittens inside of that .
Thats not even funny. They would either die of lack of oxygen, or explode due to the pressure difference.
yes plz
why is everyone so amazed by this? my 3rd grade teacher taught this stuff. Sound needs a medium but light doesnt so thats why you can see light in outerspace but cant hear nothing
put in fruit
Would be interesting to know if all frequencies are equally dampened as pressure lowers. Couldn't find much info on this, probably because it's drowned in the majority of tests that only care about full vacuum. Would also be interesting to know if it affects speed of sound, like apparently temperature does.
Sound with a wavelength less than the mean free path of gas particles won't transmit (and practically speaking, sound of wavelength that isn't a LOT longer than the mean free path of gas particles will get attenuated really quickly). But at 1% of 1 atmosphere (which I think is what his vacuum pump can get to), the mean free path is still quite short, so probably all frequencies we can hear still transmit just fine -- except that the energy isn't transmitted very well from the speaker to the thin air, so the sound waves are too weak to move the salt grains.
No i couldn't hear it because you kept talking
I love how as soon as one you tuber makes a hit out of vacuum chambers ALL you tubers have to make vacuum chamber videos.
Yo no offence but the way this guy speaks makes it sound like he's constantly smiling. Bit creepy
One argument for possibly hearing am explosion in space is that an explosion is rapidly expanding gas. This creates a blast wave, when this blast wave makes contact with solid objects with gas in them it transfer that wave energy to that object. And if enough energy is absorbed by the object to create waves inside a ship or a space suit then a person may hear it. But... Sounds by just creating vibrations would not make sound because it has no medium to transfer the oscillating pressures. Explosions kind of create their own sound medium, so it may be possible to hear an explosion in space.
i was here before the comments like "its my birthday can i get 20 likes"
You were here long before youtube. Never mind dumb comments lol
So you Really just stated that one ASTRONAUT could not Possibly hear the other talking. YES!
i get it
Can duck tape fix my depression
Busthar Mods only if your hillbilly enough
Duck...
Explosions usually give of gasses and particulates that carry the sound of the explosion, they would quickly dissipate in vacuum, but if you are close enough to be affected by the explosion then you will hear it to some degree.
Dude... vacuum in a vacuum...
nothing would happen becuase there would be no pressure difference between the two containers
Watching these videos always make my day when I grow up I want to be a neurosurgeon
Cool proof that space is fake.
how?
Elias RodriguezZz
How what? Nothing can exist in a vacuum, so space must be fake. Simple, now let figure the rest out.
why would you ask me such a derogatory question., sarcasm works both ways you know.
Do you for 1 moment think that anything can exist in a vacuum, have you ever worked with vacuum, or do you still believe in the teachings your soured education system gave you.
Does that answer your question?
Cosmic Surfer the least you could do is word that correctly. It seems the education system has failed you
Thankfully the education system did fail me, this allowed my brain to develop on its own and not get 12 years of indoctrination slammed into it.
So whats your excuse.
Wow! Awesome experiment! I want to build my own V chamber now!
I'll just answer before i watch the video, No
Another great video. I watched the microphone in the chamber yesterday and wondered if you made this one. For one UA-cam sent me the video I wanted.
What happens if you put a bluetooth speaker in a high pressure chamber? Would the increase in air molecules make it louder? Or maybe make it sound kinda muffled?
I always wondered about this, thanks for the experiment!
In theory a special ion speaker could let you hear sound in space by the ion waves or compressions hitting the outside of your space helmet. Since sound would be utilizing something that can travel in a vacume.
actually in space if an explosion occurs the pressure wave created by the explosion and the gases it puts off from the rapid combustion would create sound until the gas (air) particles distribute far enough apart from one another that there would be no more force behind them. So the close you are to the explosion the more likely you are to hear it. within a certain level of reason for survivability anyway. Cody with Cody's lab has already done test in a vacuum chamber with explosives that the results supported that hypothesis.
I know this is off topic, but that 800hz tone reminds me of my old ZX Spectrum as it starts loading data from tape.
You can’t have a negative atmospheric pressure.. it’s fractions of the pressure which are positive integers.. perfect vacuum would be zero. Stop saying negative 👌🏻
Super excellent video, thanks for sharing!! Took a number of physics courses at college, always had an interest in topics like this since I have a background in playing guitar, drums and land surveying. Land Surveying requires some knowledge of optics, electromagnetic waves, time in space when operating the High-Tech equipment in the field.
You should try a levitating speaker to remove any vibrations from the tape and play music. That's only if you can find one that doesn't need an external power source.
So fascinating, if I'm in a vacuum with my wife, she might not hear me well when I ask for chips while watching TV
+Papa O lol
i knew there was no sound in vacuum but it was cool to see it in action.
Well I think the reason why the speaker stopped working when you werent even at full vacuum is because the speaker chassis has got a sealed chamber behind it. (Doesnt look like bass reflex) Once the pressure inside the vacuum box is dropping, the air trapped behind the speaker is pushing it out. Once the maximum travel of the speakers membrane is reached, its not able to move anymore. So no sound is emitted.
The test wouldve been much better with just a speaker chassis (without any enclosure) inside the box.
God. I see this guy's channel a few months later, and he's gotten way better. I guess I'll subscribe!
any connection between the speaker and box (tape, string, etc) would transfer sound from the speaker. Also, I'm sure you didn't reach a perfect vacuum, so there was still some micro-atmosphere in there to transfer a little sound.
Got into a "debate" with a Moon Landing denier and they said that one of the reasons they didn't believe we landed on the moon was that they thought radio waves couldn't travel through a vacuum. I was hoping you could turn the speaker on and off to prove it could.
actually you can hear explosions in space, but only within the blast radius because that is wear all of the gas will be and without gas you will have no sound because the sound waves have nothing to bounce off of, so yes you can actually hear explosions in space
I joined in on a comment rant on this sorta subject a while ago, what about an explosion? It would let out gasses that would in theory carry those sound waves until the gas had dissipated, it would only take a small amount of this explosive pressure wave to reach the hull of your ship or even just the spacesuit, in turn sending the vibrations thru the surface and into the pressurized environment inside, thus if in an enclosed environment and the sound was from an explosion, you would be able to hear it, right?
Hi checkout my pinned comment above about this. If you are even a few meters away, the pressure will drop low enough that you still would hear no sound, but you would "hear" the pressure wave
Sound travels in waves like light or heat does, but unlike them, sound travels by making molecules vibrate. So, in order for sound to travel, there has to be something with molecules for it to travel through. On Earth, sound travels in your ears by vibrating air molecules. In space, the large empty areas between stars and planets, and there are no molecules to vibrate. There is no sound there. So in your video thats why it had very very little noise.
Good stuff you produce here. Maybe you could just name the experiment in the beginning then conduct it and explain it at the end. It would make it a little more exciting to watch. Just a thought.
Try putting a concrete block in there.if there is no air will it turn into dust?
Wow, this experiment was really well thought out.
Sound is basicly waves traveling in the air like waves of water cross the ocean. In a complete vacuum you would hear nothing because there is no air for the sound to travel in. Its like expecting waves when you just removed all of water ice clouds ect from the earth.
"In space... No one can hear you scream"
Suggestion for video
After u create vacuum add little dark colored smoke in to camber to see how it spreads, just like when we add a dye in water. Of course this will be more rapid so u might have to do some slowmo...
Could you possibly build somewhat like a pressure chamber? I mean, where the pressure is being increased instead of decreased?
the reason u couldn't hear it is because the vacuum pressure stops your speaker from vibrating up and down not because u need air to hear sounds, true that sound travels longer and louder in normal atmosphere but it can also be heard lightly through magnetic vibrations, a speaker is not going to work without air, it will stall. now if it was something else like a gun shot or something like that u would hear it
You know, the answer was already pretty obvious to me. Since sound waves are mechanical waves, they need matter in order to be heard. So if it is put in a vacuum chamber, all the air/matter is taken out of the chamber, thus it results in the sounds from the speaker not being heard.
this gave me an idea, sound travels through air, like our voice does, when we speak through helium it makes the sound higher, so if you put a speaker in a container full of helium, would the music play higher pitched?
Lets assume, both a huge speaker and a human in a vacuum. If music is played on speaker, he is not able to listen music due to vacuum, but what if he touches the speaker, can he able to listen the music through music vibration? Though vibration can travel through body even in vacuum?
Van you explain me?
Is that a custom-built vacuum chamber? It looks much better than those metal saucepan types.
It looks better apart from the fact the metal saucepan types can get to a much lower pressure than this can.
the background music during the experiment detracts from the focus of hearing if there is any sound
what would be cool if you did the same thing but instead of putting the air back in you could put helium into the chamber then again with sulfur hexafluoride, find a way to see if you can change the pitch with simply changing the density of the gas in the chamber, I think that would be awesome.
Explosion can be heared in vacuum, because there are lot particles of gases quickli expanding from explosion and hitting your suit and visor, than you hear explosion : ) PS: sorry for my bad English, its not my default language : )
This is the coolest channel on youtube. I wish I saw these videos 10 years ago when I was in school. Apparently Physics can be interesting :)).
I did't think the activity would die down completely because I didn't see the speakers being isolated from the walls of the chamber and the the bowl of salt. Vibrations from speakers will still travel through any medium if touching.
you could hear an explosion because the gasses released by the explosion would vibrate your ear drums
actually if there was an explosion in space there would be particles moving outwards so if they hit your suit or ship you would hear it, but not the pitch of the explosion, just a hum
fascinating science of atmospheric pressure that we are living under Just WoW
Video Title:"Can You Hear This?"
Me:"No! Too Much Talkie And Too Much Music!"
that
accually looks satisfying
Either A - no sound will come out due to the lack of air in the chamber
Or B - The speaker will use the actual chamber as a way to transmit the sound via vibration
This experiment should be done using an old twin-bell alarm clock. To be able to see the little hammer hitting the bells and not being able to hear it :)))
I don't usually comment on videos, but this is so obvious I just have to point it out, and probably someone has already. I normally don't mind the background music on when explaining something, however when your testing sound in a vacuum, it would be best if there is no background music on at all. That way now one gets confused between the background music and the solid tones that are being played. Plus its irritating when you want to hear the tone go away in the vacuum but you have the background music playing, and it's difficult to discern. If possible please edit this video without the background music, at least while the vacuum pump is running, and when the air is let back in.
Try putting fruit , vegies in the vacuum chamber, also I would like to see a light bulb inside
The sound is made by the vibration of the air, if dosen't have air, it doesn't make any sound.
that was really neat.
Would anything sound different or look different if you compressed the air in the chamber? Then again you would need a clear containment that could take high psi.
You should had put an electret microphone in there to see if it sounds like a bigger or smaller place.
Im loving ur vids man
Mkay, great vid but you can’t tell when you can’t hear the bell anymore because of the background music
When you do demonstration involving sound, it's better if you don't have a background music playing as part of your video. I thought the music in your video was played by the BT speaker, but it wasn't.
Wow that is awesome. Thanks for the answers to my question. Love to see if you have a video about remodulating sound from a pure vacuum. I am confused how they do it. Can you help?
Cody's lab did explosion in a vacuum and you can hear an explosion because it makes its own pressure wave