Every kind of waves known to that time traveled via some kind of medium: For example, sound waves were being propagated through air, drinking water, or A few other form of matter.سایت و سرور دانلود سافت‌۹۸ در داخل کشور و در دیتاسنتر آسیاتک میزبانی می شود و در سامانه ثبت دا�