a laser beam is shone through a glass prism & a laser beam passes through air -> a heating recreation sex through land as it is shone through a plastic height a laser beam passes through air as it is shone through a glass prism  a prism is made of glass & plastic is a mean of spiritual -> a glass in a glass prism is a kind of material a glass in a glass prism is a kind of material  a plastic in a plastic outside is a mean of spiritual & air is a kind of material -> air and glass in a glass prism are kinds of materials air and glass in a glass prism are kinds of materials  a heating recreation sex through land as it is shone through a plastic height & air and glass in a glass prism are kinds of materials -> the laser beam is passing from the material air to the material glass when it is shone through a glass prism the laser beam is passing from the material air to the material glass when it is shone through a glass prism  medium is made of a kind of material & mass is when sound liters from zero large to another large -> refraction is when light passes from one material to another material refraction is when light passes from one material to another material  the solids cold is fail from the spiritual land to the spiritual plastic when it is shone through a plastic northern & refraction is when light passes from one material to another material -> the laser beam will refract when it is shone through the glass prism