As a noun, an interface is either: 1  A user interface, consisting of the set of dials, knobs, operating system commands, graphical display formats, and other devices provided by a computer or a program to allow the user to communicate and use the computer or program.
What are flammable and combustible materials? Flammable materials can be found as solids, liquids, or gases. Flammable solids can be classified in three categories: desensitized explosives, self-reactive materials, and readily combustible solids.
Flammable solids are any materials in the solid phase of matter that can readily undergo combustion in the presence of a source of ignition under standard circumstances, i.e. without: 1  Artificially changing variables such as pressure or density; or. 2  Adding accelerants.