Spaces within the larger context (form) become visible in the central vision, then disappear as movement progresses forward.  The spaces, now behind, are repositioned to the peripheral, where they eventually fade back into the context.

The entire particle system (context / form) is initially only detectable through shadow.  As the device-replica (device) “reads” a particle (space) it becomes visible (green particles), realizing part of the entire system.  When the d-r collides with (moves past) the visible particles, they disappear and rearrange (disappear, then appear in the peripheral mirrors) to appear again in the peripheral (gray particles / reordered form / back view).  The particles (gray / back view) finally fade (disappear from sight) as the d-r moves ahead (changes views).

One of the device videos (from previous post):

And the device itself, on site and detailed:

 

And just in case, a link to the progression of the animation:

http://naliyat23.wordpress.com/hybrids-midterm-animation-thingie/