Show phosphorescent paints faints phosphorescent materials tamil famil lar or to many as novelty hair hair ornaments nursery pictures and small toys for the amusement of 0 children also have some very practical uses the calcium strontium and zinc sulfide materials have been found well suited for marking escape panels important controls companion ways and nd obstacles in the interior holds cargo spaces and cabins of ships the measurement ot of the brightness these materials yield requires a special technique and equipment |