Gyro POV color trick

thingiverse

This is basically any regular gyro toy but with two main differences that set it apart. It's modular and can be assembled in 4 different colors, allowing you to see how Persistence of Vision creates new colors as you spin it. So print the elipsoid parts in as many different colors as you have and experiment with POV. This makes a great experimenting magic puzzle for kids because it is easily assembled and unassembled. I designed this for my little nephew's science project at his college, and all the kids loved it. Part.stl requires baseplate support. If the tip becomes loose, glue it in place. The tip and main axis are designed as separate parts to avoid using supports on this part. POV is a phenomenon involving your eyes. Cells in your retina get the color you see but have a little delay until they "see" the next color. So when you rapidly change colors as in the spinning gyro, the cells in your retina mix the colors for you! This only works for your eyes, not for a camera, so don't be surprised if you can see colors that your camera doesn't. I'll post pictures of my builds if my nephew returns them to me (which is unlikely). If you build one and have the time, please post a make. Thanks. Enjoy! UPDATE (16-JUN-2017): I increased tolerances for the radial parts to make it easier for kids to play with.