Acoustic Energy & Surprising Ways To Harness It (Intro To Thermoacoustics)

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Here I introduce a series of experiments culminating in how to make a thermoacoustic engine. Check out my sponsor Brilliant for a great way to keep your mind sharp and learn something new: www.brilliant.org/nighthawk
Below are some sources I found helpful in my research for this video:
BladeAtilla was very helpful in troubleshooting issues with the thermoacoustic engine design: / bladeattila
Wiki on thermoacoustics: en.wikipedia.org/wiki/Thermoa...
Wiki on acoustic resonance (great animations for understanding sound waves): en.wikipedia.org/wiki/Acousti...
Modeling a driven thermoacoustic oscillator: sites.google.com/a/umn.edu/mx...
Various experiments with a standing wave engine: labs.wsu.edu/matveev/acoustics/
In depth study on a thermoacoustic refrigerator: www.researchgate.net/publicat...
A special thanks to my top Patrons: LVE, Enzo Breda Lee, Jon Hartmann, TheBackyardScientist & Eugene Pakhomov! If you enjoy these videos please consider supporting my efforts to continually improve them: / nighthawkprojects
Thanks for watching!
-Ben

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22 май 2024

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Комментарии : 2,7 тыс.

@Nighthawkinlight 3 года назад

If you're new to this channel here are a few similar videos I think you'll enjoy. History of a Lost Supermaterial & How To Make It (Starlite): ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-0IbWampaEcM.html Re-Inventing The Carbon Lightbulb: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ThBkzEfjVl0.html A Japanese Master Craftsman Taught Me To Make Senko Hanabi Fireworks: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-yvoUYEu3o-c.html If you'd like to support my efforts in making these videos directly you can do so through Patreon at: www.patreon.com/NightHawkProjects Thanks for watching, and thank you for your comments! I still read every one, and greatly appreciate your feedback. -Ben

@ProPyroPower 3 года назад

Amazing!

@adruvitpandit5816 3 года назад

You could have tried a small led that requires little power compared to christmas lighting rice bulb that you used.

@babblo 3 года назад

You should have use starlite instead paper...

@lukesnyder3358 3 года назад

There you are with your variety of crack pipes... The glory!

@mason_freeman_33 3 года назад

This dude def wasn't vaccinated

@Donnerwamp 3 года назад

Thermo Accoustics, the science of hot tunes.

@ezradelsman6743 3 года назад

and fire beats

@lukesnyder3358 3 года назад

Smoking crack never sounded so great

@ZedNinetySix_ 3 года назад

slick af

@JOSH-st2me 3 года назад

@lukesnyder3358 3 года назад

@@JOSH-st2me press alt f4 to cyberpunk

@Unsensitive 3 года назад

I highschool over 20 years ago, I found this out using a 6 ft cardboard tube and a bunsen burner. It was so loud the windows vibrated, and was heard through the entire school. Sounded like a fog horn. And thus ended our "free period" in advanced chemistry class

@brodriguez11000 2 года назад

Budding musical career cut short. :)

@Dremaus1911 2 года назад

@@brodriguez11000 isnt that kinda how hitler was born but instead of music he wanted to do art?

@carenbarnet378 2 года назад

How sad your curiosity at that young age, was not channelled to finding out your questions of ... Why is it so?

@woodhonky3890 2 года назад

cardboard didn't burn? That's preposterous.

@JerryRigEverything Год назад

Super cool! They also use sound waves to cool the camera sensors in the James Webb telescope.

@paladinkhan 7 месяцев назад

Fancy seeing you here without a "fancy seeing you here" comment under yours. Glad you enjoy this wizard too

@dankirkland1602 5 месяцев назад

Ha ha. There is no sound in space. Lol. Jk. I'm sure they have the right contraptions to make it work.

@GeorgeZaharia 24 дня назад

@@dankirkland1602there is sound in space, there isn't enough particles to make the sound waves travel fast enough for you to hear it... Ul hear it but probably will take longer to get to you or the sound will be so distorted and lowbase it wouldn't make sense when it reaches you. 😂 Like a creeping fart 😅😂

@kenmcmullan9330 3 года назад

I generally hate "sponsor ads" in the middle of videos. This is an exception. I love the way you introduce them and I empathise with your reasons for liking them. Some people can suck up a formula and regurgitate it. They'll go far in their careers. Some folk Can't. BUT with the right teacher, they'll see the "THE WAY" is not necessarily the only way. Those people will go wherever they wish. I love your videos. You educate on my level and I'm a Chartered Engineer with a Master's Degree!

@Nighthawkinlight 3 года назад

High praise! Thank you very much

@theCodyReeder 3 года назад

Ah! Even without part two I can see how this can be used for cooling! Awesome video! To get power out of the coil you should try smaller wire, more turns, and an iron core. Or maybe go bigger with the design. 😉

@einname9986 3 года назад

what about an extra large version for your mars base?

@Bobsry16 3 года назад

Hey, love your channel keep going!

@rustycobalt5072 3 года назад

Could you see how this could be applied to *solar thermal power* Using IR from the sun as heat input and a closed system boiling/condensing water as outputs (output IR while condensing such as a radiator) for cooling the system On top of a turbine of course, wonder what kind of efficiency that could get Together you have a radiator, refrigerator, solar panel and a turbine from sunlight and sound Think in terms of frequency my friends

@whatelseison8970 3 года назад

I was gonna say the same about the coil. I'd also say don't bother winding it yourself. The coil from a solenoid valve, microwave turntable motor or a shaded pole motor are readily available options.

@lukem3250 3 года назад

Hiya Cody, nice to see you here. Apart from the coil with thinner wire and more turns he should stack few magnets together - not too many to prevent the rubber membrane from deflecting too much, and use an AC volt meter to show the coil voltage. After that he could start thinking about connecting a LED with 'full bridge rectifieeeeer' or two LEDs in oppose polarity way as it is AC rather than a light bulb.

@rays5163 3 года назад

Not gonna lie, when I saw "thermoaccoustics" I was hoping there was going to be a saxophone flamethrower

@dsdy1205 3 года назад

so, a J-79 engine?

@richardwendling4030 3 года назад

That is on Kenny G's youtube channel

@revimfadli4666 3 года назад

Or Karim from Fire Force

@THEmaggspie 3 года назад

lol deadlly

@OneAffected 3 года назад

LOL

@zackbenedict7895 2 года назад

If your looking for a decent voltage from your magnet, you'll need to use much smaller wire, so you can have more turns. Also try not to let the thickness of your coil exceed the thickness of your magnet. Lastly, keep in mind that when one magnetic pole travels in two directions rapidly, the energy produced from any coil around it will be alternating current, which you would need to build a bridge rectifier for if you want DC current for running led lights. A small capacitor hitched to the positive end of the rectifier would also help, as it smooths out the pulsations in the wavelength.

@gogogeedus Год назад

would diodes work?

@robinhellier7436 Год назад

@@gogogeedus Yes, you could use four diodes to make a bridge rectifier, but the voltage drop across them would steal a lot of your power. LEDs will work on AC because they will conduct on the peak positive cycles.

@andrebartels1690 Год назад

You could also solder a pair of LEDs parallel, with opposite polarities.

@EmmittBrownBTTF1 Год назад

Diodes will run with AC with 50% duty.

@christianbautch4015 Год назад

I don't think his copper coil was positioned right either.

@andrebartels1690 Год назад

I've never seen a video from you that would have been boring. Your style of narration, your own fascination on the topics, your way of showing the working principles in detail without giving me the feeling that I'm a dummie. You are in the list of my absolute favourite content creators, each one for their niche. Keep up the good work 👍👍👍

@cocospops9351 3 года назад

When you turn the tube sideways, it looks and sounds like you're pouring a big glass of disappointment.

@lukesnyder3358 3 года назад

Not only does his crack pipe sing him a lullaby but it's a creepy theramin metal one

@TGears314 3 года назад

2:49

@stspy212 3 года назад

Your presentation skills are spot-on. "This is the phenomenon we're talking about. It works roughly like such and such." *demonstration of what you just talked about* "Building on that, we can use that phenomenon to do cool things." *demonstration of the cool thing* Thanks for teaching me something neat today!

@1306anand 2 года назад

Seen many RU-vidrs explain a lot of stuff. You're currently in my top 3 best teachers of science in RU-vid. You make learning fun, easy to understand without jargon. Simply amazing work. The world is a better place with you on it for sure 💯😎👍

@johncoulson9613 Год назад

I woke up this morning and learned something totally new. Never heard of thermo acoustics in physics or engineering classes at uni (NZ) but there it is on RU-vid. Thanks and I hope you realise that you are really good at this teaching stuff.

@AppliedScience 3 года назад

Really nice demo! Looking forward to the refrigerator!

@AnkitSharma-1337 3 года назад

One ben watching another ben doing cool science xD xD btw love your videos Applied Science!

@JohnSmith-eo5sp 3 года назад

Traveling-wave tube based refrigeration is being developed by NASA

@GuRu_MaNTer 3 года назад

😂😂😂

@gtjack9 3 года назад

@Truth Never Lies ...But you just said it yourself, NASA are contributing to developing the technology... so they are contributing something? All science starts with a a hypothesis and can only be developed from there.

@ulysses4536 3 года назад

Interestingly, I thought of you when listening to this guy. Two things. Not only that you both perfectly formulate your thoughts so that it's easy to follow, but you even have similar voice timbres IMO.

@Dog-Girl-Defect 3 года назад

This man is a wizard.

@1ucasvb 3 года назад

Confirmed. Wizards always have pet birds.

@Starkl3t 3 года назад

He's seriously a genius

@mailamaila5918 3 года назад

@@1ucasvb funny , good job

@DrValerie800 Год назад

Wow...you are a WONDERFUL teacher! Not only do you get the information across succinctly but you also make it simple enough for those of us who are not mechanically inclined. Thank you! 💗

@jinchey Год назад

The way you pace your explanations is perfect.

@dextrodus 3 года назад

Who cares about actually generating electricity, I have never seen such a good looking engine

@GadgetBoy 3 года назад

One last thought: My memory is a bit hazy on the specific equations, but I can try to point you in the right direction. The frequency that the diaphragm is vibrating is very important to calculating the ideal impedance of the coil you're using to harvest the power. If I'm remembering correctly, for this application, you're going to want LOTS of turns of very fine magnet wire.

@llantup 3 года назад

I'm not an expert; I've just been tinkering with electronics and electricity for much of my life. For a test like this I would, as Gadgetboy says, use magnet wire. I'd start with at least 100 turns, but I could see it taking much more than that. Instead of a bulb, use a multimeter so you can see the voltage you're getting as well as the current when running it through an LED bulb. Sounds like a fun experiment, and I'm looking forward to the thermoaccoustic refrigerator!

@notamouse5630 3 года назад

Impedance of the coil really needs to match the load. As the load is a neon bulb, fine wire is required. Were it an LED, this size is almost acceptable.

@GadgetBoy 3 года назад

@@notamouse5630 That's why I suggested to try LEDs with his current coil. it won't work *well*, but there should be a result. An oscilloscope would also be illuminating.

@H33t3Speaks 3 года назад

Contract a coil winder!

@jeremyelliott9831 Год назад

Awesome. Love when something simple and obvious is overlooked, then brought back to awareness to generate inspiration. You’ve inspired me apply my audio recording knowledge to my mechanical, electrical and fabrication interest. Cheers!

@NoOne-zm4rb 2 года назад

You have great ability in communicating these concepts and giving detailed and usable instructions.

@Advoko 3 года назад

Interesting! I read somewhere they installed special clay vessels filled with mercury into a castle's air ducts to create occasional "ghost" sounds when the air was quickly cooling or heating...

@theflamingbanana7491 3 года назад

Lol. Mercury

@Scott_C 3 года назад

@@theflamingbanana7491 LOL ... ? It's a naturally occurring element. Where's the humor?

@MrMagentaSkillzFilms 3 года назад

*Freddy mercury starts singing from the castles air ducts*

@antoniocialfi77 3 года назад

@@Scott_C uhhh, the fact that it's a toxic heavy metal?

@Scott_C 3 года назад

@@antoniocialfi77 Go watch Cody's channel explaining Mercury.

@dontevenworyboutit 3 года назад

Holding a bird so people will watch the sponsored part is more brilliant than the sponsor

@christianwilliams4242 3 года назад

worked on me!

@FractalPrism. 3 года назад

sponsored part? whats that ive got SponsorBlock makes youtube far more bearable and doesnt waste my time selling me crap.

@dontevenworyboutit 3 года назад

@@FractalPrism. then u missed out on the bird

@DreamwalkerFilms 3 года назад

I appreciate your style so much. Thanks for being a good teacher and a passionate scientist. And for not having a dubstep intro. LOL

@StephanBuchin Год назад

Your sponsor couldn't find a better channel to support 🙂

@gizmo9987 3 года назад

One time I was sitting in traffic turning left. The five cars in front of me had their blinkers on. I saw all five blinkers blink at the same time twice! I was so excited I had to tell someone and that's when I realized I was driving alone. It was the saddest best day I've had.

@mcutshall32 2 года назад

But you arent alone. I seen this too, and was too excited. Only to know i was..alone.

@dancoulson6579 3 года назад

2:44 - I observed something interesting here. When the tube is vertical, the convection currents going over the heater carry heat away. However, when you put the tube on its side, the convection current was significantly reduced, and the heater glowed a little more brightly because there were less air flow to carry the heat away. In essence, you created a device where the energy conversion can be manipulated. Verically for sound, kinetic (moving air), a little light, and a lot of heat. Or horizontally for more heat and light, but less kinetic and no sound.

@SuperMIKevin Год назад

That commercial was brilliant! Not because of the subject but because I know you used the bird to hold my/our attention on purpose while actually continuing the AD. I wonder how many people actually fell for it for the extent of the AD.

@BaronVonTrumplton 2 года назад

Why did I not have a teacher such as yourself when I was at school… Amazing! Please keep up the great work

@agent136 3 года назад

DUDE! This was the research I did for Texas State University. Our goal was to create a thermocouple using the resonance wave in a tube with open air. We were hoping the get the cold side of the thermo couple below the dew point and generate water. We were able to get a difference in temperature by 20 degrees F. Super exited to see more of your work on this topic!

@MD-qh6ld 3 года назад

fahrenheit is not a linear scale.. between which gradiant temperature exactly? or in °C?

@agent136 3 года назад

@@MD-qh6ld its been a long time since I have worked with that stuff, but the hot side was up to around 80ish degrees and the cold side was at 60ish. That's all I meant.

@peetiegonzalez1845 3 года назад

@@MD-qh6ld Yes it is. A 20°F change in temperature is equivalent to 11.1°C or 11.1K change, and requires the same energy change at any starting temperature.

@dafenz5902 3 года назад

Dope! Was this research published - and if so, where?

@agent136 3 года назад

@@dafenz5902 Unfortunately, we were unable to write a scholarly article about it. However, we did win the undergraduate research conference at Texas State University in 2017. I worked under Dr. Asiabanpour.

@ninjaz5736 3 года назад

That part about beats is often how musicians tune fine-their instruments. When tuning a bass guitar (where I change the lowest string relatively often), I can mute the amp and physically FEEL (through the body of the guitar) the pulses to see if the bottom string is in tune (with a higher string playing the same note), so no need for a tuner, and no need to have everyone hear me re-tuning. When playing a brass instrument in a band, if I hear the pulsing/beats happening with someone else playing the same part, I can "lip" the note (sort of "bending" the pitch a little bit) to make it more in tune with the other player (and they'll usually do the same so we end up somewhere in the middle). Once you know about it and how to listen for it, it's a very useful phenomenon!

@cliffchan6966 5 месяцев назад

You are the only one that I have seen on RU-vid that correctly explains and demonstrates the thermoacoustic engine. All others I have come across so far are stirling engines that are wrongly called as thermoacoustic engines. Keep up the good work👍

@falsehero2001 3 года назад

I watched part 2 before part one. This is exactly what I thought could be done within device. It’s a solid state Stirling engine generator!

@mscir 3 года назад

I'd like to hear an thermally-driven acoustic pipe organ, that would be interesting and work great with the right music, slow and haunting. .

@jackfoster78 3 года назад

look up pyrophones - lots been tried already!

@johannesmajamaki2626 3 года назад

I almost reflexively skip ahead when I hear a phrase that indicates transition to a sponsor spot. But... that bird.... I just.... couldn't.

@Scott_C 3 года назад

That's why he does it. It's also one of those rare occurrences where I look forward to the sponsor message in a YT video. :D

@murphygay7606 3 года назад

8:08 for ur viewing pleasure!

@michaelprice3031 3 года назад

Lol, I just muted it

@brucelarsen6650 3 года назад

Somebody playing with their bird, on camera, in front of everybody, really kinda grabs the 'ol attention, dunn't it?

@Jiraton Год назад

I am new to this channel, and this is a treasure of the Internet !

@scaleneous 2 года назад

1:51 Demonstration of sounding, and explanation of flow inside a tube. Excellent!

@whatthefunction9140 3 года назад

this could be expanded into a freaky piano

@TytoMobile 3 года назад

Nobody: Mattias Krantz: *I Put THERMOACOUSTIC ENGINES on a Piano and then Hired a Piano Tech to Fix it*

@wep6433 3 года назад

I was thinking something like a steampunk thermoelectric organ.

@whatthefunction9140 3 года назад

@@wep6433 well yeah!

@ChrisBigBad 3 года назад

@LOOK_MA_NO_COMPUTER interested?

@ChrisBigBad 3 года назад

erm. of course @LOOK MUM NO COMPUTER - how to do @-replies for usernames with blanks? @LOOK_MUM_NO_COMPUTER ? @LOOKMUMNOCOMPUTER ?

@gramursowanfaborden5820 3 года назад

note to self: toaster organ.

@benjaminsmith2367 3 года назад

Was thinking the same thing.

@JinKee 3 года назад

r/dontputyourdickinthat

@uilsoum875 3 года назад

*the phantom of the opera echoes throughout my house* ah shit i burned it

@JTThumpington 2 года назад

Fascinating! These principles can also be applied to radio antennas. The wire wool is the feedpoint and the rubber diaphragm is working in a similar way to a loading coil (inductor), which can be used to make the antenna operate on a lower frequency.

@vermontsownboy6957 Год назад

HOLY TAMOLE! Where has this channel been hiding from my view! Fantastic, clean, clear, transparent explanations of interesting subject matter. Great content. You've got your latest 1.98...01 millionth subscriber.

@kyrius_gm4 3 года назад

I think this is the best stratergy i've ever seen to keep the attention of viewers when it comes to a sponsorship! I couldn't stop watching the bird! So cute!

@twocvbloke 3 года назад

Not really related to the hooting tubes, but the overlapping frequencies was how tone-dialling on telephones worked, sending two frequencies at once, which produced different sounds, not to mention other tones used the same effect such as dial tones and ringing tones... :)

@whatelseison8970 3 года назад

You used to be able to dial a phone by playing the (DTMF) tones into the phone from a computer and in the very old days, you could hijack the whole system with a whistle. lol.

@lignesdefuite Год назад

This is amazing - it's a cool subject, well made and really accessible. Thanks so much for sharing your experiments with us!

@rushi2529 Год назад

I’m sure many people have told you this. You are a fantastic teacher!

@exiletomars 3 года назад

I feel like recording those tones from the quartz tube onto tape and splicing the tape into various rhythms and stuff would be something avant garde musicians of the 50s would have been obsessed with.

@Todesnuss 3 года назад

I was so distracted by that bird I paid no attention to the sponsorship. What a lovely bird.

@irishelbling9255 2 года назад

its honestly a stroke of brilliance tbh because now brilliant lives rent free in your subconscious and you probably associate it with cute birds. lol

@pjmartin6249 8 месяцев назад

Excellent teaching skills. So much knowledge, about subjects/concepts that obviously excite you, clearly conveyed through explanation and demonstration. All while avoiding any condescension. Truly a marketable skill set you have sir. Thank you for your contributions.

@agnosjr 2 года назад

Awesome video, thank you for sharing and doing all of the research about it. One thing we can notice is that on the big tube when tilted horizontally without the air flow the heat on the resistance rises as it glows stronger. Cheers Ben and again thank you.

@A_Simple_Neurose 3 года назад

As always the production quality for your videos is stellar. Excellent work.

@ahmadtajy7178 3 года назад

Just hearing this dude's voice makes me feel better

@QF2653 Год назад

This is the BEST explanation yet of how these work.

@fgbouman1 2 года назад

I saw that a pulse cryocooler is used on the Webb telescope. I found this video which, after watching a half dozen others, actually explained what was going on in understandable terms. Thanks for that. Finding out how gas-powered refrigerators work was a bonus

@AngDavies 3 года назад

Reminds me of a pulsejet/barking dog experiment- the resonant kind, with the flammable gas in side of the tube, and the compression and heat needed to ignite it oscillating rapidly Edit: I guess all pulsejets are resonant in the same way as the valves aren't controlled actively

@redcastlefan 3 года назад

Now This is a great thing. Its late night, I have hot coco and i have new night hawk content. God is Good. Such high quality, so interesting, so nice. if theres one thing i wish never goes stops coming, its your content.

@stephencoles4043 2 года назад

What brought me to this video was discovering that the James Webb Telescope will use a thermoacoustic refrigerator to cool the medium infrared sensor from 40 kelvin down to about 6, so thank you for explaining how it works.

@Shaileshartsms Год назад

Such a beautiful presentation. Thank you for sharing.

@subliminalvibes 3 года назад

I can imagine the Billboard for your concerto... "Standing Wave Only!" 👍😎

@bassett_green 3 года назад

This is a really cool demonstration of something I had never even heard about before

@fabiobarbati6029 3 года назад

very clear explanation, thanks to the perfect speaking and attitude of the talent. Lovely experiment!

@alllove1754 3 года назад

I love what you are doing, absolutely love your channel. Thank you for exploring this so openly.

@TechsScience 3 года назад

Play with your pet when you promoting the product this way the people don't skip the add *Brilliant*

@theecstatic9686 3 года назад

Not his first rodeo....

@sbastian6633 3 года назад

So true 🤣

@AFMR0420 2 года назад

I’ve had the idea of an acoustic flying machine for many years. Acoustically actuated plasma controllers for anti-gravity drive also has been a sound theory. Lol. Thanks for such great videos.

@alexwolfeboy 2 года назад

I can say for a fact, I loved your assistant during the ad segment! Would love to see more of him/her!

@giovannimazzocco499 6 месяцев назад

I just discovered this absolutely brilliant channel about popular science. Amazing! Looking forward to seeing more experiments! 👏👏

@gkdresden 2 года назад

In order to make useful engines with higher efficiencies it is convenient to use lumped element resonators (Helmholtz resonators) instead of thermoacoustic resonance. It means, you need a gas mass and a gas spring separately, which can built up by use of a gas volume (as the spring) and a gas tube (as the gas mass inertia part). The effect is mainly to reduce the resonant frequency of the engine to operate a moving magnet linear generator. I have developed a double piston engine of this kind delivering around 1 kW of electric output power operating with electric heating with about 4 to 5 kW input power (I have used electric heating for simplicity and to measure the COP in an easy way). Maybe this is interesting for you.

@paladiandrei4751 2 года назад

Could you please show us some photos/videos?

@33left 2 года назад

I would be interested in your setup also.

@royhopkins974 6 месяцев назад

Please demo on a RU-vid video

@GuberShep 3 года назад

Holy cow, this is so cool. I never knew this existed. All my years. Amazing!

@coolstuff8925 9 месяцев назад

Excellent explanation and well paced delivery; you're a great professor!

@trustthedogsheneverlies644 2 года назад

Really enjoy your precise use of language in addition to the brilliant content. Thank you!

@SolarWebsite 3 года назад

4:49 for a second there I was convinced you were going to take a sip! This made me realise that I may have watched too many Tech Ingredients videos ;-)

@ashketchup247 3 года назад

Screw science classes in high school, just sub to this channel you'll learn more and have a more fun time doing it.

@jamesscott8962 2 года назад

Thanks. I really like your presentation. Very polished and comprehensive.

@noam65 Год назад

I just happened across this video. It's so well done! Thank you for demonstrating these basic principles.

@TheGrinningViking 3 года назад

Oooo, classic pyrophone technology. Though the pyrophone involves a variable strength flame below what is essentially an organ tube (though they are usually glass, for the visual effect.)

@carenbarnet378 2 года назад

Wow. Night Hawk I love your simple explanation for heat, sound and using the two to provide an engine. Where were you when I was a toddler? I am now 63. I was asking so many questions , my parents let me loose in their library. If ever there was a question... I had to ask it. You have re-sparked my interest in physics. Looking forward to watching your other videos

@MrPoornakumar 5 месяцев назад

Excellent demonstration.

@fredrichardson9761 7 месяцев назад

Outstanding video! Really nice explanation of the concepts involved with teally good demonstrations of there effect!

@MrRoboskippy 3 года назад

I think some are using thermoacoustics to make stirling engines more efficient.

@kevinbyrne4538 2 года назад

15:56 -- Wrap your coil around a rod of soft iron. Then move one end of the rod close to the magnet on the vibrating diaphragm. The moving magnetic will induce an oscillating magnetic field in the rod and that oscillating field will in turn induce an oscillating current in the coil. Using fine wire and many turns helps to increase the output voltage.

@NATEDOGGYSTL Месяц назад

Really cool!! Sound is one of the most fascinating things in this life!

@markmilan57 Месяц назад

Man I miss those high school days when we were so young and love these kind of stuffs.

@GadgetBoy 3 года назад

The bulb was too high resistance, put two leds in parallel, but reverse biased, and try that. I can almost guarantee you'll get light.

@Basement-Science 3 года назад

pretty sure you wont. You need a ton of turns to get to even a volt with something like this at a low frequency.

@soranuareane 3 года назад

@@Basement-Science Small LEDs can light visibly with less than a volt and with microamps of current. It should work.

@Basement-Science 3 года назад

@@soranuareane the voltage is the bigger problem here. This might be as low as 1mV per turn or even less. If you dont get enough voltage, there will be no light at all because you wont even get a microamp to flow through an LED. Also I'm not sure what kind of LED would light at less than a volt in the microamp range. I know green leds can light visibly at around 2.4V 5uA, and those are already some of the most efficient ones together with blue ones.

@tribalismblindsthembutnoty124 3 года назад

You would need four. That will function like a full bridge rectifier.

@Basement-Science 3 года назад

@@tribalismblindsthembutnoty124 Then you need even more voltage for that.

@Stadtpark90 2 года назад

The use of the bird to make me stay through the Ad was „brilliant“.

@gordonstull1962 2 года назад

Good stuff, I never could exactly figure out why that 1/3 ratio was so important. I patented an expansion tube exhaust system for a internal combustion engine back in 1991, that worked with that 1/3 ratio. Unlike a megaphone these expansion tubes had a long convergent section that was highly sensitive to low frequency acoustic frequencies, of which were highly penetrating acoustic waves, that increased the vacuum at the intake manifold. I like to think of the 1/3 ratio as being a under square vortex... the greater the pressure, the greater the energy density from coil & uncoil. I can't wait to see your next video!

@skaownz234 Год назад

Thank you dearly for spreading this knowledge. I studied physics in college and the fact that I hadn't discovered thermoacoustics until a few years after I graduated is flabbergasting.

@CamStLouis 3 года назад

This is an interesting video to encounter while designing my own woodwind instruments! "Rocket bagpipes" seems like a fun concept to explore...

@charleslambert3368 3 года назад

The world needs a thermoaccoustic pipe organ.

@TheHarleyEvans 3 года назад

now could you build a setup of many tubes of varying lengths across the top of a ruben's tube, to emulate the original piece of music in the new "thermo-resonance" instrument ?

@kevinm413 Год назад

I watched through the entire Brilliant ad just because I was mesmerized that you were wrestling with a parrot. that was super cool. Also the science blows my mind too- but the bird was the coolest thing I have seen this week. My dog is my best friend, and now I wonder if you can have that kind of relationship with a birb.

@rogueart7706 Год назад

Excellent video...very detailed...you actually explained how it works. Thanks a million!

@diceblue6817 3 года назад

all this time... his bird has secretly been the sponsor 🦜

@ianmelzer 3 года назад

You can get beats in a crowd of screaming people.

@bibicatb9362 3 года назад

your point?

@abdulmuneem7347 3 года назад

@@bibicatb9362 He's just stating an interesting fact.

@buffplums 3 года назад

Wow the applications are endless!

@Memory_Blanks 3 года назад

Nice of you to throw in the stuff on beat cycles. Great educational videos!

@jabberwockydraco4913 3 года назад

I was wondering, could a big ass Rochelle salt crystal be used to make electricity from sound?

@alexrogers9086 3 года назад

If the vibration is sufficient. You may have to add a horn to focus the sound wave

@cuntycat2397 3 года назад

Ah yes, the HNWD. The Hot Noise Warp Drive.

@WONMARK 3 года назад

Where has this been all my life... Nice video

@lloydprunier4415 Год назад

Thanks to this video and the comments I'll have to try this one!

@emorag 3 года назад

Great video. Looking forward to sequels.

@thePyiott 3 года назад

Me: Im so tired and want to sleep RU-vid: Acoustic Energy & Surprising Ways To Harness It Brain: yes

@C_U_R_I_E_L 2 года назад

Very well explained obscure concept, sleek video with great cinematography, no stupid thumbnail (usually acting as a barometer of intelligence in many facets), no screeching voice that is extremely stylized with ethnicity and gender, and excellent lack of horrendous-3 major-chords-only song made with the same .wav sample whistle and bell decibly amped over any previously inteligible dialogue. Perfect for my ears and mind. Subscribed. Thank you so much for sharing.