This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Glass microspheres. en Glass microspheres or glass beads diameter specific gravity Mineral filler mainly used to increase the sness on thermoplastic or thermoset resins and for road safety markings verre de diamtre et densit Charge minrale utilise surtout pour amliorer la rigidit d'une rsine et pour les marquages routiers