Everyday Science information about Ultrasonic and Infrasonic

Everyday Science information about Ultrasonic and Infrasonic

Ultrasonic:
The study of sound waves with high frequencies beyond the upper limit of human hearing or 20 thousand Hz. This technique is employed to locate a tumor, to scan a pregnant woman’s abdomen in order to produce a picture of foetus or to treat certain neurotically disorders.

Infrasonic:

These are the sound waves which have the frequencies lowest than the lowest limits of human hearing or 20 Hz.

Everyday Science information about Ultrasonic and Infrasonic