photojojo:
How to Make Light Paint Orbs: Attach an LED to the end of a string, and twirl it in vertical circles around you in 360 degrees. Photo by Andrew Katic
How to Make Light Paint Orbs: Attach an LED to the end of a string, and twirl it in vertical circles around you in 360 degrees.
Photo by Andrew Katic
interesting experiment
i really really really want to try this