21. Modern recreations of photographic flash powders may avoid the use of barium salts because of their toxic nature. 22. The glass bottle seen by Burgess turned out not to contain flash powder , but Sodium cyanide, a lethal poison. 23. Titanium may be added to the flash powder mix to produce a cloud of bright sparks around the flash. 24. The " Dark Pyro " version is used in flash powders to increase their sensitivity and sharpen their report. 25. The electric "'flash-lamp "'uses electric current to start flash powder burning, to provide a brief sudden burst of bright light. 26. Sherman crews also had concerns about firing from longer ranges, as the Sherman's high-flash powder made their shots easier to spot. 27. For instance, a weight of 20 grams nitroglycerin will cause a lot more destruction than an equal weight of flash powder . 28. A " titanium salute ", " ti-salute " for short is a flash powder explosive containing small grains of titanium metal. 29. Stun grenades, flash bangs, and flares all use flash powder to create bright flashing lights and loud noise that disorients the enemy. 30. One method of mixing flash is to put the components in the final device and handling the device will mix the flash powder .