Instructables user quasiben writes:

Persistence of Vision (POV) is the illusion that an image continues to persist even though the image has changed. In essence, we are taking advantage of the limitations of the brain-eye processing time. With a camera we can tune our eye for a longer exposure. The Lilypad POV (row of LEDs) is a fun toy to build with minimal programming and electronic needs.

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Becky Stern is a Content Creator at Autodesk/Instructables, and part time faculty at New York’s School of Visual Arts Products of Design grad program. Making and sharing are her two biggest passions, and she's created hundreds of free online DIY tutorials and videos, mostly about technology and its intersection with crafts. Find her @bekathwia on YouTube/Twitter/Instagram.

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