Phosphorecent Crystals: To create beautiful fluorescent shapes and original crystals. It contains gypsum, moulds, alum sulphate bags, and potassium to create beautiful crystals and fluorescent creations. Entertain the kids with the Clementoni phosphorescent crystals. This fantastic science kit allows your children to grow their very own glow in the dark crystals, being the perfect blend of fun and education. Phosphorescent materials are glow-in-the-dark toys, the glow slowly fades out, sometimes within a few minutes or up to a few hours in a dark room. In simple terms, phosphorescence is a process in which energy absorbed by a substance is released relatively slowly in the form of light. This is in some cases the mechanism used for “glow-in-the-dark” materials that are charged by exposure to light.
A rich lab to create lots of differently-shaped crystals.
The set contains everything you need for a fun afternoon, allowing you to design the crystals’ shapes with the included mould and choose what colours you want them to be.