Flashover is a stage that occurs during a fire, when a fire has a plentiful supply of oxygen enabling a rapid burning of any combustible fuel within the room or compartment. Smoke will rise in a plume and form a layer below the ceiling.
When these gases reach a temperature of approximately 550-600°C the thermal RADIATION produced from the smoke layer causes any exposed combustible materials to spontaneously ignite.
Mobile phone wallpaper
For phones with screen size 240 x 320 (e.g. Nokia 6300)