The Sound of Freezing: Explained!

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For the last few months I've been experimenting with ways to grow ice crystals, and while there's a lot to come on that front (Subscribe for the rest!), welcome to Episode 1: The Sound of Freezing! The vacuum-evaporation setup I used to freeze water in this video was one of the first I tried, and it wasn't until recently I realized that I had inadvertently recorded the SOUND of freezing water - I didn't think it was possible (and I thought freezing water wouldn't make a sound). In this video I explain dendritic growth of crystals, freezing water ice from supercooled liquid, and propose a source for the crackling noise that seems to accompany the formation of ice crystals! Enjoy!
CORRECTIONS:
[none yet!]
Other videos in this series:
The Sound of Freezing, Explained!
• The Sound of Freezing:...
The Sound of Freezing (Bonus Footage)
• The Sound of Freezing:...
What is polycrystalline water?
• What is polycrystallin...
Check out the other social media for updates and ramblings:
/ alphaphoenixchannel
/ alpha__phoenix
#Materials #Physics #Crystals
Music in this video:
I Dunno by grapes is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
ccmixter.org/files/grapes/16626

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25 июн 2024

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Комментарии : 448

@PracticalEngineeringChannel 3 года назад

Awesome video. Such a great explanation and really nice clips from the freezer. I have been wanting to make a video showing the degradation of concrete from cycles of freeze/thaw. Whenever I get around to it, I'm going to need to remember these lessons about filming in the freezer!

@AlphaPhoenixChannel 3 года назад

ah i was totally going to add a joke about cracked pavement in Ohio and i forgot! this is like freeze-thaw cycle occurring inside the ice... good luck with your eventual filming!

@erictart4225 3 года назад

@@AlphaPhoenixChannel perhaps the high pitched sounds are the result of a rapidly growing crystal lattice that traps previously-dissolved gases. Ice would encircle trapped pockets of air, and press inward to due to the expected increase of volume of frozen water. The overpressure of air bubble crystal inclusions in ice is a well studied phenomenon, although your interest in sound might be ... unique. I would expect the individual "blips" of sound to be the shockwaves caused by stress fractures created when ice encircles a pocket of water that hasn't ejected all of its enclosed gases out of solution. When gas leaves solution, the volume is expanded many fold, and if there's nowhere to go ... the gas is gonna crack open the surrounding ice structure to relieve as much pressure as it can. I would not be surprised if the dendritic growth pattern allows a relatively uniform statistical distribution of air bubble sizes and thus the compressive stress to sound effect picking up what looks like a quite short range of frequencies. Now I want to see the effect of degassing, and if that can explain the different crystalline growth patterns.

@harriehausenman8623 3 года назад

Hey Practical Engineering, why don't you also come over to odysee. I've got some LBRYs waiting for you :-)

@theavera9ejoe Год назад

I just noticed you posted here Grady! It's awesome to see you both know each other's channels!

@Kycilak Год назад

@@erictart4225 Isn't the water already degassed as it is cooled by evaporation in low pressure?

@AppliedScience 3 года назад

RU-vid should have recommended your channel to my years ago! I only found it now because of a suggestion from Breaking Taps. I really really liked your explanation of dendritic growth, as I have never really understood it that clearly. Thanks so much for making these videos. Also great to see UCSB again as a fellow Gaucho!

@AlphaPhoenixChannel 3 года назад

Hey! Great to have you here! By the way, I aspire to have a workshop like yours someday - your stuff is fantastic. I just got a text from somebody at my hackerspace that you gave a shoutout on twitter, so thanks a bunch! Discovery on RU-vid is so difficult...

@QuintBUILDs 3 года назад

The Applied Science tweet brought me here! Apparently we need to go around the algorithm to promote education.

@scott98390 3 года назад

I'm also here from BreakingTaps!

@fizzyplazmuh9024 2 года назад

I am pleasantly surprised that Ben of Applied Science doesn't know literally EVERYTHING and there was something I understood that he didn't yet. He is literally a God of applied sciences. I can die with a sense of meaning now.

@wernergraff 2 года назад

Indeed very clearly explained! What I‘m still extremely curious about are three things: - why are dendrites developing symetrically (from same location to two sides at the same time)? - snow flakes seem to grow in air surrounded only be tiny water droplets. Can there still be the same mechanism at work? - why do snow flakes stay in one plane?

@MiningToAsia 3 года назад

It’s funny cause I’m like of course it makes noise, but then I remembered it’s just movies.

@AlphaPhoenixChannel 3 года назад

ikr?!

@andrechinazzo719 3 года назад

maybe movie people got the insight from hearing lakes freezing? From a quick reach on youtube, this was the best video I found. You can hear both the crackling noise and the stars wars like sound that is also pretty cool. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hFLdGa_T06Y.html&ab_channel=WildlifeandNatureChannel

@JayPixx 3 года назад

THIS one od better ! :D Laser sounds. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-v3O9vNi-dkA.html

@denny9931 3 года назад

I think everybody knows that it can make this sort of noise when reverting the process, like running warm water over a block of ice. Not the same thing, probably, but similar noise.

@CaptCorgi 2 года назад

@@andrechinazzo719 That is it ! I have lived next to a pond my entire life and have always known ice makes noises, And those are the sounds I was thinking of. Clearly its not exactly the same sound but lord does it make it make a bit more sense why I was like "yeah duh its gonna make noise" Literally I have never in my life reacted to a video's concept with more like "well duh" energy than this, I literally thought "well of course it would make noise" but then I thought about it and I was like "wait a minute why would that make noise, and why do I know it would make noise"

@pafnutiytheartist 2 года назад

The fact that quickly freezing water makes the sound that Hollywood lead us to believe is purely amazing. I thought for a little while on how did it happen (I really doubt that a lot of sound engineers actually heard this specific sound). I think I have an explanation. They were looking for the sound of ice. The only situations where ice actuality makes any sounds normally is when it cracks, be that by walking on it, or throwing an ice cube into a drink that's too warm. So yeah, cracking sounds makes sense. But I would have never guessed that this sound has any realistic and scientific merit to it. So cool

@sailor5853 Год назад

No. They heard it. If you put a bottle of water in the freezer for the right amount of time it will be liquid, just waiting to become ice. That it out and tap it and it will instantly freeze and you will hear the ice.

@kindlin Год назад

@@sailor5853 Timing it right can work, but more reliably, you want to make super critical water that will freeze when you tap it or otherwise disturb it. Easiest to do that in a nice, clean container, and before you try and freeze it, boil it. This reduces dissolved gasses and subsequently nucleation sites. Probably does a lot of other stuff, too, but I'm no chemist.

@justsomeguy5628 Год назад

This is the same sound as when an icecube is melted by water, likely for the same reason explained in the video, and it is very audible. Also, I have heard this from ice forming on house and car windows.

@Vicus_of_Utrecht 3 месяца назад

Or pouring water into a bottle partially filled by ice- crack crack. Speaking of Hollyweird fakery, the 'iconic' bald eagle call used ALLL the time in movies is a from a hawk. The B.E.'s call is a pathetic cry 😂

@Vicus_of_Utrecht 3 месяца назад

Cows don't look like cows on TV 😂😂😂 m.ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KbkNul4wQH0.html

@Pants4096 3 года назад

Time to put a good ultrasonic transducer / hydrophone into a sound-dampened version of the experiment, and record with a few hundred kilohertz of bandwidth. Oooh! Oooh! Then take a wacky turn into left field and start pulsing ultrasonic energy into an ice-forming region. Would a pressure wave inhibit ice formation while a rarefaction wave would enhance it? If you could set up standing waves, would crystals form along the nodes?

@einname9986 3 года назад

I want to see this!

@atomatopia1 2 года назад

On top of this perhaps use a thermoelectric cooler to help remove the freezer noise from the equation

@acefromwithin2079 2 года назад

Yeah. Whatever he said.

@Ryan-xc8uh 2 года назад

I know you! We played TF2 like 10 years ago

@duskpede5146 2 года назад

@@Ryan-xc8uh small world

@DampeS8N 3 года назад

Thanks for the note at the end about this being an hypothesis. Too often people in popular science media perform single experiments and draw conclusions from them. Towards the end of the Mythbusters run they _tried_ to get away from that, but never completely successfully. It would do the science YT space well to always have this message in the back of their minds if not in the back of the videos.

@AlphaPhoenixChannel 3 года назад

the method is important! this is such a new explanation i didn't feel right ending without a disclaimer

@ahhuhtal 2 года назад

Walking in a forest when it's really cold, you can sometimes hear loud popping noises coming from the trunks of trees. In Finnish this is called "paukkupakkanen", which translates as popping freeze. The commonly told explanation for this is indeed water expanding when freezing. Not sure if dendritic growth is occurring in the trees, or if the water gets trapped by some other mechanism.

@MrMarapro Год назад

I think it's just about the moisture freezing in the tree's structure and, as it turns into ice, expanding. The cellulose of the tree doesn't expand, so it cracks to relieve the pressure.

@Muonium1 3 года назад

A most excellent and thorough treatment. Though I've known the reason for water ice's hexagonal symmetry since high school (the 104° bond angle of the molecule), I've never seen a clear explanation of the dendritic growth mechcanism before. There's certainly a paper in this sound thing if one hasn't already been written.... The foley freezing sound is kind of understandable if you live in the North. You can definitely hear ice cracking in the forest after an ice storm or when you walk on a newly frozen lake the sounds are kind of similar but deeper. Also supercooled ice cubes from the freezer make related crackling noises when dropped into a drink from the thermal shock.

@lukeshaffer3837 2 года назад

As an ice fisherman we are very aware of the sound of freezing ice. I've had a few friends go running off the lake after hearing pressure cracking. Or the ice cracking under your chair.

@khloros17 2 года назад

I hate to think there are other amazing channels like yours that I will never get to watch cause youtube recomendations are plain dumb. Glad to have recently found you tho!

@J-W_Grimbeek 2 года назад

0:20 real smooth pun there

@HectaSpyrit 2 года назад

That ultra-sound dendritic growth plot twist was amazing!

@KnowArt 3 года назад

This would maybe something that Applied Science can help you with? he's a cool guy

@QuintBUILDs 3 года назад

Worked for me! 👍

@emilyrln Год назад

Simply magical! It's been a while since I heard glass being scored by a diamond wheel prior to breaking, but that's what it reminded me of.

@lunaponta594 2 года назад

this channel awakens something in me that makes me want to learn, and i enjoy how you explain and how excited as well you are to these new concepts i'm learning. you're a rare kind of person i can vibe with so well i could watch a full 30 minute video and i would enjoy it

@vincenzomartorana2625 2 года назад

You're gifted, man! The material is of high quality, your enthusiasm is engaging, the explanations are convincing. Keep on like this

@jasond4084 3 года назад

I heard water vapor crystallize in 1996 while wintering over at the South Pole. I first noticed it while relieving myself outside when the air temperature was below -75f. There was no wind so it was extremely quiet out. The noise was soft but sounded like the rush of water from a pressure washer. The unexpected sound made me stop and turn my head to see what was making the sound. Hearing nothing I continued only to hear the rush again. That’s when I realized I could hear the steam from my urine crystallizing. Later on in the winter the same phenomenon would occur every time the temp was around -75f. I’m assuming this would be different at sea level as we were at 9301 ft with a physo altitude of 12-14k depending on the day. At -103f when running naked from the sauna out to the pole and back I could hear the steam from my sweat crystallize as it passed my ears. We were basically leaving human contrails behind as we ran. I’ve always wanted to reproduce this effect in a freezer and get it on tape. Thanks for this vid!

@nom6758 2 года назад

Explained perfectly. Never heard anyone describe it using that model of supercooled water vs ice, the visuals were exactly what I was looking for.

@1PoodleKing1 3 года назад

This is so fascinating. The explanation of dendritic growth was really good. I had never thought about it that way.

@MakerBees333 2 года назад

Living in a cold area the loud cracking of ice is pretty commonplace, especially when ice starts to form on the inside of double glazed windows. Similar sounds can occur with rapid thawing probably for similar reasons. You need to be in the country to experience how noisy ice is, not unlike seeing a starry night sky without light pollution from nearby cities and suburbs.

@TheRanguna Год назад

Such an awesome video, it's like a paper but in video form and much lighter. It has an abstract, literature review, investigation, hypothesis, limitation and can be served as a stepping stone to a follow up to another research. Just amazing!

@bcnom 2 года назад

Man your channel and this content is criminally underrated. This is an amazing video! Just discovered you recently but each video I watch is so high quality it's absurd. I'm ready to come back in a year and see you with 1M+ views per video.

@LaughsMicroscopicallyPL 3 года назад

this is the first time I understood dendritic growth, thank you!

@kathvardoverher8999 3 года назад

I recently discovered your channel, and it is one of the best on all of youtube. So surprised you don't have more views, but I really hope you keep it going, because I am enjoying it thoroughly. I have spread it to all my friends, because such high quality content deserves more attention!

@AlphaPhoenixChannel 3 года назад

Thanks for the comment and thanks for sharing! Trying to reach people is the absolute hardest thing - glad you made it here!

@XanTheDragon 3 года назад

The algorithm smiles upon you today, traveler.

@alan2here 3 года назад

IPhone camera works well when lined up and balanced it on top of the microscope, you can see things better than looking down the microscope which makes the standard eyepiece approach kind of crazy. The resolution is good, the built in app goes up to 240 FPS for video, for still images I can recommend "ProCam" for straightforward, manual and numeric control of things like focus and exposure over a huge range. A bit of colour mapping afterwards can be helpful. Note that confusingly it can focus further away than infinity.

@jannikheidemann3805 3 года назад

Further away than infinity focus = negative focus The focal point is behind the camera.

@hadiakbari740 2 года назад

Again another brilliant piece of work! Congratulations! 👏👏👏👏

@Iodine_53 3 года назад

this is just awsome! thanks for this great content!

@SuperCripple Год назад

This channel has taught me so much. Thank you.

@beckymartin1810 Год назад

Fascinating. We stayed in a cabin right off the lake in Eagle's Nest NM. In the winter and the sounds of the lake at night will stay with me for a lifetime.

@nancyhunt9834 3 года назад

Smallest but greatest channel!

@robertmckinley2526 2 года назад

This is actually one of the best videos I could imagine using to show non STEM interested people why getting involved in the nerdy gritty stuff in science can help you understand common events when you would otherwise just say "idk guess that's just how it works"

@matthewperlman3356 2 года назад

First off, excellent description of dendrites and their formation. Thank you for explaining that! I found your theory on the sound interesting and maybe you are correct, but personally I always thought that it was a result of that 9% expansion from water to ice crystal; where each individual crystal forms nearly instantaneously, but somewhat sequentially as a whole.

@ViiKing_ 3 года назад

I don't remember how I ended up subscribing to this channel but I'm glad I did

@Webtroter 3 года назад

@10:41 about dendrite. Research is also done for batteries

@crazygamer56 2 года назад

I totally agree with you. The ice is trying to grown into an area where there is less than the 9ish percent required and breaking itself to make room. Very well explained!

@Dziaji 2 года назад

I always figured that the freezing sound was from ice crystals cracking each other since ice expands as it freezes, but the explanation in this video is far more detailed and satisfying.

@ghall05 2 года назад

Wow. Just when you think you have a tiiiiny grasp on anything to do with physics, there's always a deeper level to investigate and prove you wrong! I'm just now starting to understand that I DON"T understand ("truly" understand) anything about our universe! I love the topics of your videos! These are the kinds of questions I always ask in my head when I encounter something I don't understand! Subscribed!

@QuyetNguyen-hd8ko 2 года назад

Just astonishing! One mechanism for a lot of phenomena

@Ieno 2 года назад

0:20 glad you real-iced that!

@wayneingraham7656 3 года назад

This was fascinating. Thanks for sharing. I definitely learned something cool today thanks to your video.

@marcosmoraes1980 2 года назад

Absolutely fantastic video!!!!

@tmhchacham 2 года назад

6:55 "In a perfect world, everything would crunch down into spheres, because spheres have the best surface to volume ratio. But, we don't live in such a thermodynamicist's paradise." It's just like balls that turn to ice, In a thermodynamicist's paradise.

@poke7661 2 года назад

too many syllable

@mehmetseyit7210 Год назад

we have spent most our lives living in the thermodynamicist's paradise.

@kindlin Год назад

@@mehmetseyit7210 Don't succumb to vice and cowardice in the thermodynamicist's paradise.

@perez8pepe 3 года назад

Great video, love your explanation. Thanks Brian.

@FunOrange 3 года назад

wait what... for a second a thought this video had 3.7 million views, not 3.7k views!! It's so well made and the title is so enticing

@AlphaPhoenixChannel 3 года назад

That’s be nice! Needs like a LOT of people sharing lol

@AlphaPhoenixChannel 3 года назад

Glad you liked it!

@techwithvj4162 3 года назад

I don't know why such good videos and good channels don't get much subscribers and views..... ❤️ur work

@MakeScienceLM 2 года назад

Wow!! Excellent video!!!

@swizzleproxi4810 3 года назад

Its amazing to capture sights and sounds from the microscopic world...a whole new dimension..explored

@kevl0d922 2 года назад

That’s a really detailed game design!

@skivvy3565 3 месяца назад

Thank you so much for such informative. Yet entertaining videos. Probably the best I know aside from *Secret Life Of Machines* and *Connections* . Both two of the greatest technology/history series ever made. I hope you know how exactly how wonderful a teacher you are.

@testboga5991 2 года назад

This video needs more views!

@AntonioAstorino 2 года назад

Glad you "realiced" it!

@rob40480 3 года назад

This is super interesting, great video!

@ivan.zhidkov 2 месяца назад

This channel is so underrated

@njhcomposer 2 года назад

Hey man, I recently discovered your channel and I really love the style and the editing of your videos! Super informative and fun topics as I’ve been going through some of your older videos. This one is one of my favorites, it blows my mind that there is a sound for ice like this. Keep up your awesome content, I will watch every one you make. I have a random question though - what song do you use in your intro to the videos? It vibes so hard and I can’t figure it out 🤔

@saxy1player 2 года назад

Great content! Cool topics, great presentation and amazing approach! :)

@Digalog 2 года назад

Damn bro you are answering so many of questions I had. And I did look up a lot of things but you come with a lot of new insights. I love it.

@DehimVerveen 3 года назад

Awesome! The freezing sound mostly reminded me of the Freeze Rally race in Jak X Combat Racing.

@illestvillain1971 3 года назад

This channel will blow up some day and become one of the major science channels in YT.

@MRHEY 3 года назад

UNDERRATED CHANNEL

@MrSaemichlaus 2 года назад

I've seen thermal cracking especially in welding aluminium. It cools quickly and it's soft. If your weld cools down too quickly, it can crack all along the centerline. You might not notice it because it's under the surface, so ultrasonic testing is the only reliable method of catching it. With slight mechanical stress, it will crack open and make for a bad day. This was some awesome research, and I learned something about metallurgy too!

@alexandterfst6532 3 года назад

Incredible. So nice !

@NicksWhipShop 2 года назад

Just found your channel. Great stuff! Based off of what's hanging on the wall behind you, it looks like you've been having some fun with thermite. Gonna look for that video next!

@05degrees Год назад

That’s fantastic!

@0uglyduckling0 2 года назад

Excellent video, did you inadvertently describe the sublimation process then? What I find interesting is that you’re able to hear the sounds so clearly from within the vacuum with no echoing from the contacting physical surfaces. To me this suggests the noise is made by trapped water vapour escaping from the pockets you describe. You just got a new subscriber :)

@joshinils 3 года назад

oh, the graphic at 11:11 has the motlen and solid sides reversed left-right from the previus with the water. split-seconds-confusion on my part

@unvergebeneid 3 года назад

This is way fascinating!

@ralphcalzada4767 2 года назад

youre growing really fast

@davidconner-shover51 2 года назад

about the time this video was made, though I was unaware of this channel at the time I remember a particularly sub zero morning where I went out to start my work truck, I remember starting it to let it warm up for a few minutes, and noting the half a bottle of water I'd left behind the night before it was still liquid!, no trace of ice in it. I could tilt it, watch it move like regular water, a few minutes later, after I got in, and started driving, I went to take a swig of this water. took the top off, and tilted it back tom take a swig. as soon as it touched my tongue, I heard a fairly loud snap, the water froze to slush instantly

@nicolaywoods9817 5 месяцев назад

As a Canadian I approve this Video

@AmateurTP 2 года назад

this is so amazing

@AyyyGabagool Год назад

God I love this channel.

@TheDJOblivion Год назад

Freeing ponds/lakes make this noise, probably why it's so intuitive, and why movies are so accurate.

@Noobificado 3 года назад

The thing about the sound being too high pitched to hear actually blew my mind.

@largestbrain 2 года назад

the way he says vacuum is kinda satisfying in a way

@hugow3266 2 года назад

this is amazing thank you

@machibutinenglish1468 3 года назад

This guy is like Tom Scott but experimental, and I love it

@kori228 Год назад

and less political

@visualchallenge2413 3 года назад

I think there is a setup that will interest you : you can use a smartphone audio cable, uncover the small microphone inside, put a small plastic piece directly on the microphone then put a small drop of water. I think that when freezing you will hear very clearly the crackling sound of freezing. Concerning your own setup you can hear the sound very clearly if you use a microphone that you stick firmly on the the surface of the water container. As you know the sound passes much more easily between solids than through air.

@alixsprallix 2 года назад

Great video

@zZHotBurritoZz 2 года назад

It sounds like millions of microscopic spherical magnets sticking together! Amazing!

@tttITA10 2 года назад

"Dehydrate the camera" is definitely an interesting phrase.

@1.4142 3 года назад

So cool and underrated

@zeroed 2 года назад

you deserve more subscribers

@chakra6666 3 года назад

incredible! I love your work, so don't get disheartened by not getting tons of views (if you are disheartened by that at all) :)

@PsRohrbaugh 2 года назад

Do you have any recordings without the freezer background noise? I suspect that there are low-frequency components to the "freezing sound" that are getting lost in the freezer noise during recording, and therefore can't be heard after filtering.

@aaronsmicrobes8992 3 года назад

I find this incredibly fascinating. I'm betting that there's a strong correlation between dendrite size and the pitch of the crackle, so I'm theory you could determine the size of the dendrites when they break. There might also be something interesting to gain from the volume of the noise. Maybe when two similarly sized spikes interact and the smaller one breaks the noise is quieter, but when a small meets a large the noise is louder? If only there was a good way to control the formation of the crystals. Maybe including specially designed nucleation sites that can form regular crystals aligned in a particular direction or something (metallic hexagonal particles in a magnetic field?). Seems tricky to pull off, but it'd be really cool to see and study.

@sean101101101 3 года назад

Bravo, Brian :)

@AlphaPhoenixChannel 3 года назад

Ayyyyy the man himself!

@blazer6248 2 года назад

Whoa. 10 yr old kids were actually calling it the right thing. It actually is a double bounce. Sweet! I never thought about that.

@BRUXXUS 3 года назад

This is also a decent visual representation of what kills lithium batteries. From what I understand, by charging batteries beyond 80% and under 20% the ions migrate to the anode/cathode, accumulate, and start growing dendrites which puncture the membrane layers of the battery, causing a bunch of tiny short circuits.

@cosmiclikesminecraft 2 года назад

So never let your phone go below 20?

@n111254789 2 года назад

@@cosmiclikesminecraft it's a good idea to keep it between 20% and 80% there are some phones such as the OnePlus 7 Pro that allows you to prevent charging past 75%. It's handy for preserving battery life.

@Garbaz 3 года назад

Amazing stuff. I really hope you find a way to look into this with a high-speed microscope!

@Cketzalcoatl 3 года назад

Dude, you're the most under-rated science youtuber right now. This is amazing stuff! I'm a materials engineer as well! Do you reckon a University nearby could have an environmental SEM (ESEM) that you could use? That should have the temperature and vacuum controls you need, and obviously super high mags.

@AlphaPhoenixChannel 3 года назад

Ooh good thought - I use an SEM all the time that I believe can run in a low vac mode, although I’m not sure what that does to the signal (and therefore maximum framerate). I’d need to do some convincing regarding putting liquid water in a research level vac chamber though

@Veptis 2 года назад

Resolve pro tip: use the context menu under workspace .. hide page navigation bar. Gives you more workspace. You can still switch to color by hitting shift+6 and deliver by shift+8 and edit by shift+4.... Etc

@thefordness 2 года назад

wow! amazing.

@VyvienneEaux 2 года назад

My hypothesis before watching the explanation is that the ice, which nucleates and freezes outward from these nuclei, creates a pressure wave from the propagation of its own wavefront, similar to how the wavefront of the fire in certain types of explosions (such as a stoichiometric H2 O2 mixture) creates exceptionally loud blasts. After video: Wow, my hypothesis missed a lot of nuance, and I learned something amazing! I'm trying to explore fractals in turing-type reaction-diffusion mechanisms in developmental biology right now as a hobby, and so I love seeing how ubiquitous fractal-related phenomena are in nature. Here's a question I've had for a really long time now: How do chips bags make such loud sounds even if you manipulate the material extremely slowly? I have a number of surface-level hypothesis but I'd love to see the thoughts your incredible mind has on this. It's just amazing to me how efficiently a chips bag turns mechanical energy into sound.