3 Temporada
46 Episodio
Why Is It So? - Season 1 Episode 15 Episodio 15 (2012)
With a great many tools before him, Professor Miller sets out to prove that all tools and machines are linked to the two simplest: the lever and the inclined plane.
- País : Australia
- Género :
- Estudio : PBS
- Director :
- Emitir : Julius Sumner Miller
