The normally invisible magnetic forces in a brushless dc motor can be shown in an animation.

(This example is just to show the use of animations, not a full explanation of how the brushless dc motor works.)

1.

Simple animation, two pictures

2.

Simple animation, three pictures

3.

3D animation, Quick Time

4.

The same
in a 2D animation

5.

Recording on a VCR tape, QuickTime

6.

Brushless dc motor, QuickTime