Find A Picture Of Myamee Without That Hair What Is The Name Of One Of The Pictures That When You Rotate It, It Reveals A Second Picture?

What is the name of one of the pictures that when you rotate it, it reveals a second picture? - find a picture of myamee without that hair

They use them to make films sometimes. If you look at various aspects that show different images. They are usually made of plastic and have an uneven surface. Search for names of these images.