Flash powder
![Examples of theatrical binary flash powders. Note the shared oxidizer (A) powder for some types of fuels (B).](/Images/godic/202501/13/Flash_Powders0805.JPG")
Flash powder is a pyrotechnic composition, a mixture of oxidizer and metallic fuel, which burns quickly and if confined produces a loud report. It is widely used in theatrical pyrotechnics and fireworks (namely salutes, e.g., cherry bombs, M-80s, firecrackers, and cap gun shots) and was once used for flashes in photography.