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Ultra-Sound explodes water in 1/180 000ths of a second!! (Patreon)

Published:
2019-04-05 18:00:13
Imported:
2026-06
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Content

 I've got to admit when I first started making this video, it was just going to be a quick little fun  video for the end of the month. Then it became clearer and clearer that it really wasn’t that obvious what was going on here, and what was going on here was very interesting! How can you get concerted ‘explosions’ on multiple droplets within 1/100 000th of a second. This is NOTHING like what I expected. This one is a real head-scratcher. However as with all head-scratchers, the first tier is to work out if theres a question to be asked there at all…. And in this case… YES yes there is. Sadly I don’t have a good answer for you on this one. 

FYI Ive started another channel where I will be publishing a lot of the behind the scenes footage, blogs and the suchlike. A place where I can publish ALL the high speed footage and maybe someone with better eyes can see what is going on here J

https://www.youtube.com/channel/UCUrdmVprSahXaPKqr04VfgQ

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Ultra-Sound explodes water in 1/180 000ths of a second!!

really wasnt expecting this at all! I just wanted a quick cute fun video for the weekend. In the end, I was stunned by what I found! Support this channel: https://www.patreon.com/Thunderf00t the ultrasonic misters/ foggers are actually really cheap, and really fun! https://amzn.to/2CQIU1Y the camera used for the timelapse at the end was actually a cheap action cam, but did the job surprisingly well! https://amzn.to/2WJpa7T the camera used for all the wide filming. Its also the pro-sumer high speed camera I used for the high speed footage of the light bulbs at the beginning. Its very nice, but also pretty pricey! https://amzn.to/2FRHxSm

Comments

Leon Schutte

I posted a comment under the video with my thoughts a few days ago. The drive frequency of the ultrasonic transducer lies at about 1,7MHz and i think the cavitation is also forced to that frequency. I'd try to film the inside of the drops using an microscope slide maybe.

Anonymous

How about this for a theory? Sound in water travels faster than in air, around 4 times faster, this means that you require more energy to produce the same volume in a denser material, but the sound itself moves faster. The energy has to go somewhere, and as the sound wave (still travelling at supersonic speeds) passes between the Water and air barrier, the sound wave moves the air molecules, or introduces the water molecules into the air surrounding the interface speeds greater than the of speed of sound in air, the molecules in the air encounter resistance, creating a pressure wave, and expends this energy as a sonic boom? or sonic explosion?

Gordo

Could it be some sort of impedance mismatch effect, when the ultrasound wavefront reaches the tip of the tentacle? Like a badly terminated transmission line.. The wiggling section looks like it is could be carrying standing waves, perhaps this collapses under certain circumstances, releasing all the stored energy.. It's a strange one right enough..

Anonymous

dunno if you could combined the high speed camera on the water and Schlieren Flow Visualization to see the sound waves ?

Anonymous

Therefore, it is necessary to carry out a study to investigate how the collapses of neighbouring bubbles are affected by their mutual interactions. It is shown here, that for L=0.09 mm, bubble 2 is shielded "from the incident lithotripter shock wave. However, the blast wave originating from the collapse of bubble 1 interacts with bubble 2. This is analogous to an incident shock wave passing over bubble 2, causing a jet in the direction of the shock." <a href="https://royalsocietypublishing.org/doi/full/10.1098/rspa.2012.0538" rel="nofollow noopener" target="_blank">https://royalsocietypublishing.org/doi/full/10.1098/rspa.2012.0538</a>

Anonymous
>>22272921

ooooo that sounds smarter than the post i made on the youtube channel. Although I think I was on the right track. Here is my copy paste: I'm not a scientist. I have no major formal training. But, to quote Jessie "The Body" Ventura, I read a lot. I actually read a lot about a topic that I believe covers this phenomena - Liquid Dynamics and Energy Transference. I've always been interested in liquid dynamics and energy transference, ever since my first egg drop at school. 1 Gallon Ice Cream Bucket, 6 Sponges, 8 zip lock bags, all soaked and filled with water, with an egg wrapped in a sponge contained inside of a central zip lock, filled with water. I wrapped it in red construction paper and called it the Red Dwarf. Each zip lock was a self contained environment. The water in each environment absorbed the energy, before the energy was transferred through the membrane (zip lock) to another environment through that environment's membrane. My egg drop from 100+ feet was a splashing success... unfortunately, the people I wanted to get wet figured out why I was running to the drinking fountain so often during class and stepped out of the way of the splash zone. Egg survived. In fact, its bag was intact. The water didn't just splash, portions of it also misted. So my story has a purpose. Water tension (aka what low grade students like my self were taught: Chemical Bonds of the liquid) has a point of no return. Basically it's a critical mass situation. When Energy is introduced into a body of water, within a contained environment, the tension of the water will absorb as much as possible, while it simultaneously attempts to expel it. This is how you get bubbles when you blow energy into your soda or milk shake. The more energy you put into the water, the more numerous the bubbles. The size of the bubbles depend on the distribution of the mass and tension of the liquid environment against the speed and power of the energy introduced into the system. The number of the bubbles also depends on the distribution of the mass and tension of the liquid environment against the speed and the power of the energy introduced into the system. Gravity also affects the two above points, as it will pull the mass down while the energy is forced to escape up. The tension and mass of the liquid environment is also shaped by the energy distribution. Path of least resistance. All of these factors play a HUGE role in what happens when a large amount of energy is introduced into the liquid environment at high speeds. The liquid environment will attempt to survive, by distributing the energy to the smallest portions, this creates thousands of tiny bubbles, each tiny bubble is its own liquid environment, attempting desperately to stay together, while expending excess energy in order to protect its own chemical and atomic structures. That energy then will elevate and expel mass from each of the liquid environments according to the dispersal pattern of the energy when it was introduced to the liquid environment. That mist, if you look closely, resembles thousands upon thousands of beady little water bubbles and orbs. I believe you have captured what I am describing above. There is math which deals with this, unfortunately, I don't know it. I never kept my notes. :( I don't know the amount of energy that can be absorbed into a liquid system before the liquid system is forced to break apart. Now you asked: What about the Abyss tentacle?! That's the shape of the sound. The water is forced to travel the path of least resistance. It is literally in the center of the eye of the sound waves, as the sound wave shape and direct the water straight up, before the water is forced to expel the energy through I guess you can call it diffusion? I don't know the right phrase, I just know the water is attempting to expel all of the energy that is being absorbed into its system. It reaches a point where the mass and tension of the water reaches the critical limit, it is unable to contain the energy, and so it expels its own mass, by sub-dividing into micro-systems in order to contain and redirect/expend the energy that was introduced into its system. :) Please let me know if I am on the right track, if not, I want to know what the real answer is. This is my best guess from what I know. I do know liquid dynamics is largely uncharted territory.

Anonymous

Im no scientist, nor do i have high school diploma. But the video and articles i looked up did wet my appetite for science. Love thunderfoots videos there very informative and i love how he cuts through the bull shit. Ill keep supporting his channel. Main stream media like to keep every one wowed and mislead. Keep up The great videos thunderfoot.