Contents
Key Stage 3
Meaning
Ultrasound is sound that has a frequency higher than 20,000Hz.
About Ultrasound
- Ultrasound is too high pitched for a human to hear.
Applications
- Cleaning - Ultrasound can be used to clean dirt from surfaces. The vibrations can create small bubbles in a water which work their way into cracks push the dirt out.
- Physiotherapy - The vibration from ultrasound can be used to massage parts of the body which can stimulate healing and repair.