1. Industrial Cleaning

Ultrasound can be used to clean delicate equipment.

Short ? = narrow, focused beam.

Vibrations remove dirt effectively by “shaking” dirt loose.

No need to dismantle the equipment.

2. Industrial Quality Control

Ultrasound waves can detect cracks inside metals.

When a sound wave travels from one substance to another, some waves are reflected back as echoes.

The reflected waves (echoes) are detected by a computer.

An echo = a flaw in the metal > a crack has formed.

3. Pre-Natal Scanning

X-rays can be used to see inside the body - (unsafe for a baby)

Ultrasound can create images and is safer.

Passes through new substance (skin, muscle, bone) > waves are reflected as echoes.

The reflected waves (echoes) are detected by a computer.

These build up a picture from each echo.

4. SONAR

Bats produce ultrasound squeaks > pick up the reflections using their big ears.

Brain processes the reflected signals into a mental picture of the surroundings.

Ships use SONAR to detect items on the seabed.

 The pattern of the reflections indicates the depth and shapes.