its called a sonogram
Ships are steered by a device called a rudder, which is operated from the helm.
Ultrasonic waves can be produced in the laboratory using a device called an ultrasonic transducer. The transducer converts electrical energy into mechanical vibrations, which generate the ultrasonic waves. These waves can be used for various applications, including medical imaging, cleaning, and material testing.
An ultrasonic Doppler device is commonly used for recording velocity mapping and imaging. This device works by emitting ultrasonic waves that bounce off moving blood cells and produce velocity measurements based on the Doppler effect. These measurements can then be used to create images showing the velocity and direction of blood flow in vessels or organs.
ships
prism
Different kinds of radar are
An ultrasonic cleaning device uses ultrasound and cleaning materials to clean. It is usually used on delicate items such as jewelry, watches, golf clubs and window blinds.
Archimedes invented a device to set fire to ships. This used mirrors to focus the rays of the sun on the ships which were attacking the city.
The clock has been used to tell time on ships for centuries.
The device used to flush a toilet is called a flush handle or flush button.
The device used to flush a toilet is called a "flush handle" or a "flush lever."
Sonar is used to detect other vessels or ships/submarines through a tube-like device> Andrea