Or do we know, chatGPT had this to say: When an underwater bubble collapses due to a sound wave, it can emit light in a fascinating phenomenon known as sonoluminescence. Let's delve into the science behind it:
Bubble Formation:
- **Tiny bubbles** are created in the water.
- **Sound waves** cause these bubbles to **rapidly expand and contract**.
Energy Concentration:
- The rapid expansion and contraction of the bubble **concentrate the energy** of the sound waves.
- This energy is squeezed into a **small space** within the bubble.
Extreme Conditions:
- The intense pressure and temperature changes during bubble collapse lead to **extreme conditions**.
- The gas inside the bubble becomes **partially ionized**.
Thermal Emission:
- As the bubble collapses, **adiabatic heating** occurs.
- This heating process results in **thermal emission**, including phenomena like **bremsstrahlung** (a type of radiation).
Glowing Plasma:
- The collapse and heat generate a **glowing plasma** within the bubble.
- This plasma emits **visible light**, creating those mesmerizing flashes.
Huh. I didn't know about the sound part of this. I thought it happened for any cavitation. It's kind of interesting the idea of exciting a bubble with sound because it's really a void in water where the water has most of the mass. I wonder which is more excited, the water or the air. But I guess because of that mass difference air based sound waves could bounce inside the bubble. Apparently the sound has to get high enough to collapse the bubble. I know that would be very easy at ultrasonic considering that causes the boundary between water and air to be unstable. I looked at the wikipedia article on it. While it says ultrasound was involved in its discovery it doesn't say if it is typically driven by ultrasound or not. Sound enough to burst a bubble without ultrasound must be pretty intense. That would be crazy if it did cause fusion. We should try it with tritium bubbles in heavy water.
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When an underwater bubble collapses due to a sound wave, it can emit light in a fascinating phenomenon known as sonoluminescence. Let's delve into the science behind it:
- Glowing Plasma:
In summary, the collapse of underwater bubbles under the influence of sound waves creates a brief burst of light due to extreme conditions and thermal effects. It's like nature's own underwater fireworks! 🌊🔮🌟For more details, you can explore the fascinating world of sonoluminescence in scientific literature ³⁴⁵. 📚.
Source: Conversation with Bing, 3/4/2024 (1) acoustics - Why is light produced when an underwater bubble is .... https://physics.stackexchange.com/questions/66044/why-is-light-produced-when-an-underwater-bubble-is-collapsed-with-a-sound-wave. (2) Sonoluminescence: When Light Is Created By Sound Waves. https://thetechjournal.com/science/sonoluminescence-light-is-created-by-sound-wave.xhtml. (3) What is sonoluminescence? | Britannica. https://www.britannica.com/video/185498/sound-bubbles-sonoluminescence. (4) undefined. https://deconstructingmedia.substack.com/p/what-is-woke. (5) undefined. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7404334/. (6) Tiny Bubbles Explain Puzzle about Light from Sound. https://www.scientificamerican.com/article/tiny-bubbles-explain-puzz/. (7) en.wikipedia.org. https://en.wikipedia.org/wiki/Sonoluminescence.
Apparently the sound has to get high enough to collapse the bubble. I know that would be very easy at ultrasonic considering that causes the boundary between water and air to be unstable. I looked at the wikipedia article on it. While it says ultrasound was involved in its discovery it doesn't say if it is typically driven by ultrasound or not. Sound enough to burst a bubble without ultrasound must be pretty intense.
That would be crazy if it did cause fusion. We should try it with tritium bubbles in heavy water.