A Practical Physiology

книги
A Practical Physiology
Год
 
Страниц
 
381
ISBN
 
1419102842
Издатель
 
Книга по требованию

Описание:

We have just learned that the pitch of sound depends on the rapidity of the vibrations. This depends on the length of cords and their tightness for the shorter and tighter a string is, the higher is the note which its vibration produces. The vocal...

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