The plastic curls because the dry side pulls the expanding moist side around it. The curling movements come from the orientation of the polymer strands in the plastic. This is called the grain of the polymer. If the grain is oriented from head to tail, the strands curl the fish from head to tail.
How Does The Cellophane Fortune Teller Fish Work?
Fortune Telling Fish are made of a super-thin material called cellophane. Cellophane is a hydroscopic material. When the absorption begins, the Fortune Telling Fish begin to swell and the hand-facing surfaces of the fish will start to curl up and away from your palm.
How Do You Make A Fortune Teller Fish?
Homemade Fortune Teller Fish Materials
Hydrate water gel beads, diaper-insides, or fake snow until they have absorbed water. Place the gel in a blender and blend until smooth. Use a paintbrush to coat a piece of glass or metal (like a cookie sheet) with the liquefied gel.
What Is The Science Behind Fortune Telling Fish?
The Fortune Teller Fish is made of the same chemical used in disposable diapers: sodium polyacrylate. This special salt will grab onto any water molecules that it touches, changing the shape of the molecule. If you submerge the fish in water, it won’t be able to bend when you place it on your hand.
How Is Cellophane Made?
Cellophane™ is a polymeric cellulose film made from the cellulose from wood, cotton, hemp, or other sources. The viscose solution is then extruded through a slit into a bath of dilute sulfuric acid and sodium sulfate to reconvert the viscose into cellulose.
What Is A Fortune Fish?
The Fortune Fish is a very thin piece of red cellophane in the shape of a fish, 8.9 cm (3.5 inch) long. When placed in the palm of your hand, the cellophane fish twists and curls. It moves differently for different people. In some instances, it may rock slightly; in other cases it curls up completely.