Persistence of Vision (POV) has been used for LED display devices that compose images by displaying one spatial portion at a time in rapid succession (for example, one column of pixels every few milliseconds). These devices can also be used to give the illusion of an image floating in mid-air, while a three-dimensional POV display is often constructed using a 2D grid of LEDs which is swept or rotated through a volume. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one showing how to make ninja throwing stars.
