Half-Angle Beam Spread:

Calculates the half-angle beam spread “Φ” for a given velocity “V”, frequency “F”, transducer diameter “D”, and “K”is constant.Beam spread is a measure of the whole angle from side to side of the main lobe of the sound beam in the far field. Beam divergence is a measure of the angle from one [...]

Many devices use ultra-sonic sound, like toothbrushes, metal inspecting devices, and the scanners used for seeing an unborn child. Ultra-sound is just what it sounds like, an ultra high frequency of sound. Sound is just a form of energy moving, through the air, at least in most cases.Here are some terms about sound.
Wave: [...]

Ultrasonic Testing Image - Concrete

Ultrasonic inspection is a nondestructive method [...]