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How does ultrasound generate heat?

Green Xenon
in Physics

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Hi:

 

What is the mechanism by which ultrasound generates heat?

 

 

Thanks,

 

Green Xenon

it causes vibrations in the material, friction and damping convert these waves into heat.

  • Author

it causes vibrations in the material, friction and damping convert these waves into heat.

 

 

What frequency of ultrasound will most efficiently heat up nitrogen [N2] gas molecules?

  • Author

whichever frequency is the least transmissible.

 

Is this because nitrogen makes up most of Earth's atmosphere?

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