Sound: Production and propagation
The basic way for the production of Sound is “vibration”. When an object vibrates it produces sound. The matter or substance through which sound is

Sound waves : Different Characteristics - Frequency, Amplitude, Pitch, Timber
Compression (C) – These are the regions where particles are crowded together and are represented by the upper portion of the curve that is known a
Speed of sound in different media
The speed of the sound in a medium is affected by the 1. It depends upon the density of the medium. For instance - The speed of sound is maximum
Sound: Reverberation, and Range of Hearing
Reverberation is the persistence of a sound after a sound is produced. A reverberation is created when a sound signal is reflected multiple times un
How do bats search their prey?
Bats generate high-pitched ultrasonic waves which are then reflected from the obstacle or prey and return back to bat’s ear.
Applications of Ultrasound (ultrasonic sound waves)
The high frequency waves are known as ultrasound. ultrasonography is also done to examine the foetus during pregnancy to detect defect or growth abn
SONAR : “Sound Navigation and Ranging”
“Sonar” can be defined as “ Sound Navigation and Ranging” This device is used to measure the distance, direction and speed of underwater objects by
Structure of Human Ear and Hearing Aid
A hearing aid is a battery-operated, an electronic device that receives sound from the atmosphere and converts it into electrical signals. Humans