3 الموسم
46 حلقة
Why Is It So? - Season 3 Episode 2 الحلقة 2
For sound to be heard, there has to be something to compress. Miller vibrates metal, tears cloth, and blows streams of air through holes to discuss the propagation of sound waves.
- عام: 2012
- بلد: Australia
- النوع:
- ستوديو: PBS
- الكلمة الرئيسية:
- مخرج:
- المصبوب: Julius Sumner Miller