WOOOOW!!! The FEEDBACK in the absence of other sounds!! It's a real amplifier converting the kinetic energy of the laminar jet into louder acoustic radiation! How the hell have I never heard about this or seen it before?!? I'm subscribed to the Florence Fondazione Scienza e Tecnica and several other classical mechanics era physics demo channels, I've watched all the videos I could ever find in this area and I've NEVER seen this until now. And it's so elegant a system! The only moving parts are the water, the rubber diaphragm, and the air. The sole power source is the gravitational potential energy of the water in the jug provided by the experimenter who lifted it! And what is that, 4 liters at maybe 1.5 m high off the table? So that's what, like 50 joules max this thing is running off of? It likely runs for several minutes, so the power consumption is mere milliwatts. I'm just blown away, this is really amazing. It actually kind of reminds me of the "Jewish microphone" invented in the 90s to circumvent their rule on not using electricity on Shabbat (because it's supposedly a kind of "fire") which uses only air pressure to amplify sound. See "Acousto-Fluidic Sound Augmentation for Orthodox Jewish Worship Spaces" '96 by Drzewiecki and Poindexter. Keep up the amazing work! There is so much in the history of science that has been forgotten like this!
I clicked on this video which just happened to turn up in my feed as recently I purchased a tea pot with a metal strainer in it. When I washed the strainer and held it at just the right angle it would make a single note. I thought you might be interested in the phenomena after reading your comment.
The Larsen effect proves that your device works as an active mechanical amplifier. It somehow makes use of the water kinetic energy to feed the amplifier but the amplifying mechanism is unclear to me. Intriguing experiment, impressive job as usual !
What a great experiment! The energy for the sound amplification must come from the moving mass of the streaming water. You even realized an acoustic feedback loop! Reminds me of the experiments in an old book from Aurel del Ratti.
Thank you for another great demonstration. I think this is an amazing channel, nothing else quite like it on youtube. Its always a pleasure to watch a new video you have done. Like another commentator said, it would have been interesting to see how loud the watch sounded up against the diaphragm without the water amplification, for comparison.
Man I am really loving catching your videos. You always present some pretty amazing examples of physics and awesome applications. I would love to tour your work and storage areas. You have/make some of the coolest things.
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This flow is really incompressible. Nice video, thanks!
It's not clear to me whether the incompressibility of the liquid is transmitting longitudinal waves to the diaphragm, or if the jet is shaking laterally and transmitting transverse waves which the rubber then converts to longitudinal. In the close up portion at the end the jet appears to possibly break up into discrete drops, suggesting the former mechanism. A slow motion video would really be interesting.
@@Muonium1 obviously I’m completely clueless and this amazing sir probably had the answer. But I’m guessing both? The wavering flow is there but I think it’s mostly present from feedback waves from the diaphragm. Although I’m pretty sure the majority of the sound waves(especially wanted ones) or being delivered through the water. Just like fiber optics or still water. Damn cool regardless
Now I'm thinking about how to make this into a self-contained modular synthesizer component. It is very distorted but it might be quite interesting if further overdriven! I'm also imagining a steampunk retrofuture where phones are all hydraulic and exchanges are filled with these, streams criscrossing everywhere in an entire building's worth of laminar ballet.
Watch the close-up at .25x speed around 2:50. Check: listen the clock ticks synchro with the visible water dripping in pulses that are collecting off the lower edge of the secured rubber membrane.
WOOOOW!!! The FEEDBACK in the absence of other sounds!! It's a real amplifier converting the kinetic energy of the laminar jet into louder acoustic radiation! How the hell have I never heard about this or seen it before?!? I'm subscribed to the Florence Fondazione Scienza e Tecnica and several other classical mechanics era physics demo channels, I've watched all the videos I could ever find in this area and I've NEVER seen this until now. And it's so elegant a system! The only moving parts are the water, the rubber diaphragm, and the air. The sole power source is the gravitational potential energy of the water in the jug provided by the experimenter who lifted it! And what is that, 4 liters at maybe 1.5 m high off the table? So that's what, like 50 joules max this thing is running off of? It likely runs for several minutes, so the power consumption is mere milliwatts. I'm just blown away, this is really amazing.
It actually kind of reminds me of the "Jewish microphone" invented in the 90s to circumvent their rule on not using electricity on Shabbat (because it's supposedly a kind of "fire") which uses only air pressure to amplify sound. See "Acousto-Fluidic Sound Augmentation for Orthodox Jewish Worship Spaces" '96 by Drzewiecki and Poindexter.
Keep up the amazing work! There is so much in the history of science that has been forgotten like this!
I clicked on this video which just happened to turn up in my feed as recently I purchased a tea pot with a metal strainer in it. When I washed the strainer and held it at just the right angle it would make a single note. I thought you might be interested in the phenomena after reading your comment.
@@superfluityme neat! 📸
Do a video!
The Larsen effect proves that your device works as an active mechanical amplifier. It somehow makes use of the water kinetic energy to feed the amplifier but the amplifying mechanism is unclear to me. Intriguing experiment, impressive job as usual !
What a great experiment! The energy for the sound amplification must come from the moving mass of the streaming water. You even realized an acoustic feedback loop! Reminds me of the experiments in an old book from Aurel del Ratti.
Thank you for another great demonstration. I think this is an amazing channel, nothing else quite like it on youtube. Its always a pleasure to watch a new video you have done.
Like another commentator said, it would have been interesting to see how loud the watch sounded up against the diaphragm without the water amplification, for comparison.
Extraordinary demonstration. Love it.
Very nice experiment! Thank you for sharing!
That is fucking cool! Way to work the impedance match!
Man I am really loving catching your videos. You always present some pretty amazing examples of physics and awesome applications.
I would love to tour your work and storage areas. You have/make some of the coolest things.
This flow is really incompressible. Nice video, thanks!
It's not clear to me whether the incompressibility of the liquid is transmitting longitudinal waves to the diaphragm, or if the jet is shaking laterally and transmitting transverse waves which the rubber then converts to longitudinal. In the close up portion at the end the jet appears to possibly break up into discrete drops, suggesting the former mechanism. A slow motion video would really be interesting.
@@Muonium1 obviously I’m completely clueless and this amazing sir probably had the answer.
But I’m guessing both? The wavering flow is there but I think it’s mostly present from feedback waves from the diaphragm.
Although I’m pretty sure the majority of the sound waves(especially wanted ones) or being delivered through the water. Just like fiber optics or still water.
Damn cool regardless
incredible
Now I'm thinking about how to make this into a self-contained modular synthesizer component. It is very distorted but it might be quite interesting if further overdriven! I'm also imagining a steampunk retrofuture where phones are all hydraulic and exchanges are filled with these, streams criscrossing everywhere in an entire building's worth of laminar ballet.
music to my ears!
Amazing!!!
Looks like all the possible applications could be achieved via a standard hydrophone but might have some use in diagnosing plumbing pipes(?)
It even has feedback
Die Rückkopplung hat mich am meisten überrascht!
Nifty !
Watch the close-up at .25x speed around 2:50. Check: listen the clock ticks synchro with the visible water dripping in pulses that are collecting off the lower edge of the secured rubber membrane.
OMG amazing!
What's your definition of a microphone?
It almost sounds like your getting a feedback howl from that. Where you hearing that too?
There is definitely acoustic feedback occuring