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Discussion and Debate
Discussion and Debate
Physical & Life Sciences
Don't get king hit by a shrimp.
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<blockquote data-quote="AlexB23" data-source="post: 77643747" data-attributes="member: 450900"><p>I don't even have to watch the video, cos I saw a rerun of a 2006 documentary about this about 10-12 years ago. This is sonoluminescence, a phenomenon that I heard about a while ago, which is where a bubble of air in water can be compressed using sound waves, so much so that the air turns into a plasma and glows. Diesel engines do not have sonoluminescence, but the compression inside the diesel engine generates enough heat to ignite the fuel. <a href="https://en.wikipedia.org/wiki/Mechanism_of_sonoluminescence" target="_blank">Sonoluminescence</a> takes this one step further, where the pressures are high enough to turn air into plasma, with no fuel required.</p><p></p><p>The documentary (6 min snippet):</p><p>[MEDIA=youtube]sGAX_sdJh6A[/MEDIA]</p><p></p><p>Sonoluminescence and heat generated from <a href="https://en.wikipedia.org/wiki/Adiabatic_process" target="_blank">adiabatic</a> compression inside a diesel engine are both phenomena related to the conversion of mechanical energy into thermal or light energy. Here's how they are similar:</p><ol> <li data-xf-list-type="ol">Energy Conversion: In both cases, the initial input is mechanical energy. In a diesel engine, the fuel is compressed adiabatically (without heat exchange with the surroundings), and the resulting increase in temperature causes the fuel to ignite and release thermal energy. In sonoluminescence, ultrasonic waves are applied to a liquid, causing cavitation bubbles to form and collapse, releasing light energy.</li> <li data-xf-list-type="ol">Pressure and Temperature: The process of adiabatic compression in a diesel engine increases the pressure and temperature within the combustion chamber. Similarly, during sonoluminescence, the collapsing cavitation bubbles generate high pressures and temperatures inside the liquid, leading to the emission of light.</li> <li data-xf-list-type="ol">Energy Release: In both cases, the energy is released in a relatively short time frame. In a diesel engine, the fuel ignites and releases thermal energy for combustion, which generates power to move the vehicle. In sonoluminescence, the cavitation bubble collapses and emits light in a very brief moment.</li> </ol></blockquote><p></p>
[QUOTE="AlexB23, post: 77643747, member: 450900"] I don't even have to watch the video, cos I saw a rerun of a 2006 documentary about this about 10-12 years ago. This is sonoluminescence, a phenomenon that I heard about a while ago, which is where a bubble of air in water can be compressed using sound waves, so much so that the air turns into a plasma and glows. Diesel engines do not have sonoluminescence, but the compression inside the diesel engine generates enough heat to ignite the fuel. [URL='https://en.wikipedia.org/wiki/Mechanism_of_sonoluminescence']Sonoluminescence[/URL] takes this one step further, where the pressures are high enough to turn air into plasma, with no fuel required. The documentary (6 min snippet): [MEDIA=youtube]sGAX_sdJh6A[/MEDIA] Sonoluminescence and heat generated from [URL='https://en.wikipedia.org/wiki/Adiabatic_process']adiabatic[/URL] compression inside a diesel engine are both phenomena related to the conversion of mechanical energy into thermal or light energy. Here's how they are similar: [LIST=1] [*]Energy Conversion: In both cases, the initial input is mechanical energy. In a diesel engine, the fuel is compressed adiabatically (without heat exchange with the surroundings), and the resulting increase in temperature causes the fuel to ignite and release thermal energy. In sonoluminescence, ultrasonic waves are applied to a liquid, causing cavitation bubbles to form and collapse, releasing light energy. [*]Pressure and Temperature: The process of adiabatic compression in a diesel engine increases the pressure and temperature within the combustion chamber. Similarly, during sonoluminescence, the collapsing cavitation bubbles generate high pressures and temperatures inside the liquid, leading to the emission of light. [*]Energy Release: In both cases, the energy is released in a relatively short time frame. In a diesel engine, the fuel ignites and releases thermal energy for combustion, which generates power to move the vehicle. In sonoluminescence, the cavitation bubble collapses and emits light in a very brief moment. [/LIST] [/QUOTE]
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