3 Сезон
46 Епизод
Why Is It So? - Season 3 Episode 2 Епизод 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.
- Година: 2012
- Страна: Australia
- Жанр:
- Студио: PBS
- Ключова дума:
- Директор:
- В ролите: Julius Sumner Miller
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