Glass slab (Set of 4) is a substance made of glass having 3 dimensions and is like cuboid shaped. It does not deviate the light. This means that the incident and the emergent ray are parallel. The slab only produces lateral (sideways) shift or displacement. It can teach children to explore the mysteries of light, stimulate a child's thirst for knowledge, and improve the children's interest of understanding the magic world.
Size: 75*50*12 millimetre.