Diferencia entre revisiones de «Ultrasound: physics and knobology»
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*As ultrasound waves travel through medium they continually losing energy to medium that they pass. | *As ultrasound waves travel through medium they continually losing energy to medium that they pass. | ||
===Reflection=== | ===Reflection=== | ||
*The rest of waves' energy after travelling through medium is reflected back toward their source. | |||
*Equals to "echo" of submarine sonar. | |||
*Enable image generation on ultrasound machine. | |||
Revisión del 19:31 5 ene 2017
Nature of Sound Waves
- How far the sound waves can travel depend on
- how strong the signal is
- the medium that the waves have to travel though; underwater is greater medium compared to brick wall.
Wave Properties
- Penetration
- Attenuation
- Reflection
Penetration
- Ultrasound waves, depending on amount of energy, will pass through a medium to a certain depth.
Attenuation
- As ultrasound waves travel through medium they continually losing energy to medium that they pass.
Reflection
- The rest of waves' energy after travelling through medium is reflected back toward their source.
- Equals to "echo" of submarine sonar.
- Enable image generation on ultrasound machine.