Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics
Ultrasonics: Introduction
Each and every creature in this world produces sound. For example, the rustling of leaves in trees, movement of insects, breath from human beings etc. produces sound due to vibration of particles in air.
INTRODUCTION
Each
and every creature in this world produces sound. For example, the rustling of
leaves in trees, movement of insects, breath from human beings etc. produces
sound due to vibration of particles in air. Among these sounds. some are
Audible and some are Inaudible.
Apart
from the sound waves that can be heard by human ear [Between 20 Hertz to 20,000
Hertz] there are sound waves of frequencies less than 20 Hertz called
infrasonics and sound waves greater than 20,000 Hertz called ultrasonics.
The
ultrasonic waves are called high frequency waves and are inaudible to human
ear. The ultrasonics has many engineering and medical applications, which are
based on the principle that "sound waves are reflected at the boundary
(or) adjoining media of the two surfaces that have different acoustical
parameters.
Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics : Tag: Applied Physics : - Ultrasonics: Introduction
Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics
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