How about Can ultrasonic waves create extreme temperatures inside gas bubbles?

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Discussion Overview

The discussion revolves around the dynamics of gas bubbles, particularly in the context of their collapse under extreme conditions, such as high pressure and ultrasonic waves. Participants explore theoretical implications for bubble behavior, potential applications in fusion techniques, and the phenomenon of sonoluminescence.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant proposes a theoretical device involving a hollow spherical superconductor electromagnet to create extreme conditions for bubble collapse, suggesting potential applications for super fusion techniques.
  • Another participant argues that a bubble cannot collapse at the speed of light, emphasizing that the surrounding liquid must accelerate into the bubble cavity.
  • A question is raised about the collapse velocity of a hydrogen bubble in a liquid helium medium under 1,000,000 atmospheres of pressure, with a request for a collapse velocity chart based on atmospheric pressure.
  • Several participants inquire about the relationship between pressure and the speed of bubble collapse, with one suggesting an analogy to the pressure behind a bullet.
  • There is a discussion about the acceleration of pressure from 0 to 1,000,000 atmospheres and its implications for bubble dynamics, including references to "Mach Bubbles."
  • A participant shares insights about sonochemistry and sonoluminescence, referencing the work of a notable researcher, Suslick, and discussing the extreme temperatures generated during bubble cavitation.

Areas of Agreement / Disagreement

Participants express varying viewpoints on the mechanics of bubble collapse, particularly regarding the effects of pressure and the feasibility of achieving extreme conditions. There is no consensus on the theoretical implications or practical applications discussed.

Contextual Notes

Participants' claims involve complex interactions between pressure, bubble dynamics, and ultrasonic waves, with some assumptions about the behavior of gases and liquids under extreme conditions that remain unverified in the discussion.

Who May Find This Useful

This discussion may be of interest to those studying fluid dynamics, sonochemistry, or theoretical physics, particularly in relation to bubble dynamics and high-pressure environments.

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Question?
What would the equation formula be for a Bubble collapsing at the speed of light?
I was thinking about Light speed Bubble implosions and had to ask.
Do you think this might have merit in any way for Super Fusion techniques?
I have an idea of a special Hollow/Spherical Super conductor Electromagnet in order of Tesla strength to pull a liquid or a gas to the inside shell of a sphere so the displacement can be collapsed, A super Torr value could be present at the core of the liquid or gas in accourdance to an Omni directional magnetic pull inside the hollow sphere. I can see it in my mind. when the field is turned off the Vacuum bubble collapses, If other means like LASERs can be used to accelerate the bubble collapse or implosion to near light speed potential.
Can anyone see the device I am talking about in their mind?:smile:

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Code Broken: Seraphim + Holy + holy + holy = Flaming Bubbles = Bubbles of Light
 
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A bubble would not collapse at the speed of light since the a bubble is nothing more than a gas (usually vapor phase) surrounded by a liquid, and it is the liquid that must accelerate into the bubble cavity.

Inertial confinement is being considered, but that involves collapsing a solid (which would have a much greater particle density than a gas) on itself by energizing an outer layer.

Also recently, scientists have been using ultrasonics to induced caviation in deuterated liquid acetone. See - http://www.chemsoc.org/exemplarchem/entries/2004/bristol_eaimkhong/Sonofusion.htm
 
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If we had a Liquid Helium medium (Bath), and placed a Gas bubble 1 cm in diameter in the He medium and applied 1,000,000 atmospheres of pressure to the He medium, Let's say the Gas bubble is Hydrogen for a Bubble medium. A Gas Bubble of Hydrogen in a bath of Liquid Helium.
What would the Bubbles collapse velocity be under 1,000,000 Atmospheric Pressures?
Can we make a Bubble velocity collapse chart per Atmospheric pressure placed upon it per Centimeter.


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We were put here to build better bubbles!:smile:
 
How does pressure have an effect on how quickly a bubble will collapse?
 
theCandyman said:
How does pressure have an effect on how quickly a bubble will collapse?

Pressure is force, force acting on mass is acceleration, more force gives more acceleration.
 
theCandyman said:
How does pressure have an effect on how quickly a bubble will collapse?

Same analogy as the (pressure) behind a Bullet.

The Bubble would experience an omnidirectional velocity implosion do to pressure.
 
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So you were talking about increasing the force? I thought you meant having a constant pressure.
 
theCandyman said:
So you were talking about increasing the force? I thought you meant having a constant pressure.

The force mentioned would be an acceleration from 0 to 1,000,000 Atmospheres, where 0 to 999,999 Atmospheres would be the acceleration, the 1,000,000 Atmospheres would be its final velocity within a second.

0 to 1,000,000 Atmospheres in 1 Second, Mach Bubbles.

But what Mach Speed?
 
Suslick

Wow, I actually know the guy who did a lot of the early work on sonochemistry, I think he even founded the field. He teaches a course to a small group of freshman about why chemistry is interesting. Name is Suslick. Too bad I'm more interested in biochem than his research, he allows undergrads with a 3.5 in 1st year lab class to work in his lab. Hope he wins a Nobel for his work one day, both b/c he deserves it and b/c I'd like to know a Nobel laureate. :smile:

Here's a link to his website: http://www.scs.uiuc.edu/suslick/

"When a gas bubble in a liquid is excited by ultrasonic acoustic waves, it can emit short flashes of light suggestive of extreme temperatures inside the bubble. These flashes of light, known as 'sonoluminescence', occur as the bubble implodes, or cavitates. Now Didenko and Suslick show that chemical reactions occur during cavitation of a single, isolated bubble,and they go on to determine the yield of photons, radicals, and ions formed"




Brilliant man, I'd be lucky to accomplish 1% of what he's done in his career (that's assuming I even get my Phd, heh) My roomate thinks I talk way to much about Suslick's genius, better stop before I bore you guys,

wow, look at this:

"Note for potential postdoctoral applicants: Due to the very large volume of email applications for postdoctoral positions (~500 per year), I no longer will respond to applications sent by email."
 

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