An Op Art Illusion - the picture seems to move. ** Best seen in full screen ** But the image is fixed! Press the red "Stop" button and the image still appears to move.
Op Art Studio: https://scratch.mit.edu/studios/5371627/ Op Art Challenge: https://scratch.mit.edu/projects/245947702/ See my project describing these illusions with examples "Op Art - Illusions of Movement" https://scratch.mit.edu/projects/247087181/ Picture by @Scratch-Minion has spiral arms of dots of 4 colours. Each spiral arm twists one way for a while, then the opposite way.
