Length

Length is a unit of measurement.

This block element goes like this (measurements are assuming 96 DPI):

1. At the beginning, the block is
   red
   at 1cm.
2. In 1 seconds, the block is
   orange
   at 1in.
3. In 2 seconds, the block is
   yellow
   at 1ft.
4. In 3 seconds, the block is
   green
   at 1yd.
5. In 4 seconds, the block is
   blue
   at 1m.
6. In 5 seconds, the block is
   indigo
   at 1km.
7. In 6 seconds, the block is
   violet
   at 1mi.
8. In 7 seconds, the animation loops back. The timing is linear.