Showing posts from November, 2021

Anatomy of the universe

Anatomy of the universe About The  Anatomy of the universe : Nobody knows how big the universe is, but astronomers estimate …

What is quality or trimbre ?

quality or trimbre   The quality or timbre is the best characteristics of sound that enavlez us to distinguish between two s…

Characteristics of wave motion

Characteristics of wave motion For the propagation of a mechanical wave, the medium must possess the properties of inertia, …

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