Illusion Drawing 1.2

About 150 years ago, a few German scientists discovered a way to make black and white drawings look colorized. They discovered a technique that is still a great illusion today. Now you can make a series of such drawings one after the other. Below are some optical illusion drawings for your use. They are the action toys and tricks with some movement on paper. They even help you line up your drawings correctly. Explore the surprise of visual illusion.