How Stuff Works: How Ultrasound Works: - Illustrated narrative takes you inside the ultrasound machine and shows you how this technique is used to look inside you.
Super High Resolution Ultrasonic Measurement System: - 5-micro-meter resolution measurement by non contact system in the air; RS-232 interface; Thickness, Deviation, Distance, Level of any kind of material.
Ultrasonics: - Dedicated to the art and science of ultrasonic nondestructive testing and allied fields.
Vibrationdata.com Tutorials: - The tutorials and course materials require a username and password which can be obtained with an annual subscription fee.