Motion Grouping
Requires a Wolfram Notebook System
Interact on desktop, mobile and cloud with the free Wolfram Player or other Wolfram Language products.
A disk is clearly visible as long as it is in motion, but vanishes completely when it stops. "Motion grouping" is the tendency of the visual system to perceive objects that move together as wholes. As long as the black and white specks that make up the disk are in motion, we see a disk rather than individual bits of black and white. But when the disk is at rest, the visual system has no clues to differentiate it from the background, and with perfect camouflage, it vanishes.
Contributed by: Christopher Carlson (March 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
detailSectionParagraphPermanent Citation
"Motion Grouping"
http://demonstrations.wolfram.com/MotionGrouping/
Wolfram Demonstrations Project
Published: March 7 2011