- An Ultrasound pulse is sent out from the transducer
- The pulse reflects wherever there is a change in density
- The transduce detects the returning pulse
- The computer then builds up many reflections into an image
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- Teeth in an electric toothbrush, vibrates and cleans
- Cleaning tiny mechanisms e.g. inside watches
- Aeropane wings can be checked for cracks that would be invisible on the surface
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- Bats send out ultrasound noises and when they reflect back, they know that something is there
- Ships use sonar to determine the depth of water they are in. A ship sends a pulse of ultrasound and recives an echo 0-3 seconds later.If the speed of sound in water is 1500m/s, you can calculate its depth.
- s= d/t
- d=1500x0.3 = 450m
- Depth is half of ths because this is the distance travelled by the sound so, 450/2 = 225m.
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