abstract:Didymium () is a mixture of the elements praseodymium and neodymium. It is used in safety glasses for glassblowing and blacksmithing, especially when a gas (propane) powered forge is used, where it provides a filter which selectively blocks the yellowish light at 589 nm emitted by the hot sodium in the glass, without having a detrimental effect on general vision, unlike dark welder's glasses.
The resultshows that the life cycle ofDidymium iridis comprises a unicellular amoeboid or swarm cell stage, a multinucleate plasmodium stage anda sporulationstage.