Specifications: This item is used for the study of status of matter which includes solid, liquid, and gas. However, in Physics, there are 4 status which includes Plasma. This set includes Plasma Ball; 8 inches in diameter, it is held on a rectangular base with dimensions 50x50x10 cm. The back screen is of size 50x40cm. This item is made of MDF wood, covered with Formica plastic.