The power of math and the power of the CC license and some smart folks with a great sense of beauty bring us a video that explains dimension, topography and complex numbers in ways that make sense and that are a joy to watch. You need not be a mathematician to enjoy Dimensions.

The creators says:

Nine chapters, two hours of maths, that take you gradually up to the fourth dimension. Mathematical vertigo guaranteed! Background information on every chapter!

Commentary in Arabic, English, French and Spanish.
Subtitles in Arabic, Dutch, Chinese, English, French, German, Hebrew, Italian, Japanese, Portuguese, Spanish and Russian.

Film produced by:
Jos Leys (Graphics and animations)
Étienne Ghys (Scenario et mathematics)
Aurélien Alvarez (Realisation and post-production).