"" Existence"" , a proprietary trigger pistol with magnesium capsules which, thanks to this device, were fired as a bullet and a silent explosion by emitting a large flash of light. This system so curious flash was manufactured in Germany in 1930-40. As you can observe, this lighting system was based on the first flashes of history, consisting of a quantity of magnesium powder whose ignition was driven manually and emitting a flash of light to take the picture. The first flash was used in 1864, but its high price is not widespread until a decade later. A the like then, ammunition"" Existence"" are also single use. The museum has three bullets Foticos sealed to be used in any circumstance, under rain, storm or blackout. 1880 magnesium powder was also mixed with an oxidizing agent such as potassium chlorate, but the character was the same explosive dangerous use (some photographers and models suffered severe burns to the flash using this system). Therefore, after 1930 they began to use the flash bulb type, single-use, containing therein a long filament magnesium in an oxygen atmosphere. These were replaced in electronic flashes 60 containing a tube filled with xenon gas through an electric high voltage discharge emitting a light flash. And more recently, mobile phones mostly use LED flashes.