Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics
Infrasonics and its Properties
The sound wave having frequency less than 20 Hz are called as infrasonics or infra sound.
INFRASONICS
AND ITS PROPERTIES
The
sound wave having frequency less than 20 Hz are called as infrasonics or infra
sound.
For
example, some animals, such as whales and giraffes communicate using infrasound
over long distances. Avalanches, volcanoes, earthquakes, ocean waves,
waterfalls and meteors generate infrasonic waves.
Properties
*
Frequency range is less than 20 Hz.
*
Infrasonic sounds are very low frequency sound.
*
These are produced by those objects which vibrate very slowly.
For
example, a vibrating simple pendulum produces infrasonic sound.
*
It cannot be heard by human.
*
They cannot travel through vacuum.
*
They undergo reflection, refraction and absorption.
*
Whales and elephants produce infrasonic waves.
Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics : Tag: Applied Physics : - Infrasonics and its Properties
Applied Physics I: Chapter 5: Oscillations and Waves - Ultrasonics
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