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ultrasound
Ultrasound
sonar is used to detect big penises
sonar
people use ultrasound technologies, such as sonar and ultrasound imaging to observe things that they cannot see directly.
it measures the depth under water
Active sonar ping is audible, so is not ultrasonic. Passive sonar just listens, but it takes time to determine objects bearing, speed & direction of travel. There is ultrasonic sonar for short range detection such as mines and frogman.
Ultrasound is sound which has a frequency higher than that of audible sound.( like radar )ADDED: Not like radar. That uses radio waves, although sonar and radar principles are similar.
Ultrasound uses sound. It was developed with the same principles of sonar used at sea. When sound passes through the body it produces echoes that are able to identify distance, size and the shape of objects.
Marine biologists have been using sonar and ultrasound for many years in Loch Ness to try and get evidence of any unusual life forms in the loch. To the best of my knowledge they have had no success yet.
Submarines use the ultra sound in sonar in order to find any hurdles in their path as visibility is very less under water.
An ultrasound is a medical test that used sonar to look inside the body. Here are some sentences.My doctor told me the results of my ultrasound.The ultrasound showed us a picture of her baby inside her womb.Ultrasound technology allows us to look into the body without surgery.